CN111945928A - Energy-saving heat-insulating wall and roof - Google Patents

Energy-saving heat-insulating wall and roof Download PDF

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Publication number
CN111945928A
CN111945928A CN202011029252.9A CN202011029252A CN111945928A CN 111945928 A CN111945928 A CN 111945928A CN 202011029252 A CN202011029252 A CN 202011029252A CN 111945928 A CN111945928 A CN 111945928A
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concrete
heat
cloth
wall
eps
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Chinese (zh)
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吴淑环
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Publication of CN111945928A publication Critical patent/CN111945928A/en
Priority to PCT/CN2021/000124 priority Critical patent/WO2021253808A1/en
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    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762Exterior insulation of exterior walls
    • E04B1/7625Details of the adhesive connection of the insulation to the wall
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/78Heat insulating elements
    • E04B1/80Heat insulating elements slab-shaped
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92Protection against other undesired influences or dangers
    • E04B1/94Protection against other undesired influences or dangers against fire
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88Curtain walls
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/88Curtain walls
    • E04B2/96Curtain walls comprising panels attached to the structure through mullions or transoms
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04DROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606Insulation of the roof covering characterised by its integration in the roof structure
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90Passive houses; Double facade technology

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)

Abstract

An energy-saving heat-insulating wall and a roof, which are used for solving the problems that the prior external heat-insulating wall has poor fire resistance and a large number of heat bridges exist in the wall and the roof, and are obstacles for building buildings with near-zero energy consumption. Firstly, the method comprises the following steps: the organic heat-insulating layer is arranged on the base wall, and then the non-combustible heat-insulating material is arranged on the organic heat-insulating layer, wherein the thickness of the non-combustible heat-insulating material is determined according to the fire-proof requirement. II, secondly: the EPS board is externally provided with a cement mortar plastering protective layer or concrete. Thirdly, the method comprises the following steps: the EPS boards are used as side formwork strips to prefabricate and process the sandwich insulation boards. Fourthly, the method comprises the following steps: the inner leaf and the outer leaf are prefabricated sandwich plates of autoclaved aerated concrete slabs. Fifthly: and bonding the BFRP cloth with the EPS board and the autoclaved aerated concrete board to form the composite sandwich concrete wall. Sixthly, the method comprises the following steps: and the BFRP cloth, the embedded steel plate and the EPS plate are bonded with each other and are bonded with the concrete to form the composite external heat-insulation energy-saving wall. Seventhly, the method comprises the following steps: and bonding the outer wall EPS boards into a whole to absorb shock and sticking BFRP cloth. The energy-saving heat-insulating wall and the roof have good fire resistance, eliminate heat bridges, contribute to the promotion of building industrialization and promote the construction of buildings with near zero energy consumption.

Description

Energy-saving heat-insulating wall and roof
Technical Field
The invention relates to an energy-saving heat-insulating wall and a roof of a building, which comprises an energy-saving heat-insulating wall and a roof which are arranged outside an outer wall or outside the roof in a heat-insulating way, and comprises a precast concrete sandwich board for assembly installation, a precast autoclaved aerated concrete sandwich board, a precast concrete outer heat-insulating board and various walls formed by installing the precast concrete outer heat-insulating board, adhesives for sticking various materials and pre-buried steel plate corrosion prevention.
Background
The prior building envelope technology is not suitable for the requirements of a low-carbon society in the high-tech era, such as poor durability and poor fire resistance: fire accidents caused by fire on thin-plastered heat-insulating walls occur in China and other countries in the world, and the fire accidents threaten lives and properties of people. The standard test condition is carried out indoors or in breeze with wind force not more than three stages. In strong wind, especially in high building wind, it is difficult to prevent fire from spreading in case of fire. The wind power of the whole world and large wind power areas in China are large, high-rise buildings account for the vast majority of buildings along with the increase of population, the wind power is increased along with the increase of the height of the buildings, and a large number of thin-plastered heat-insulating wall bodies are unsafe to prevent fire. China and the world have serious energy and environmental conditions, the heat loss of other energy-saving walls is much more than that of thin plastering, the energy-saving and heat-insulating effects are not good, and a large number of thin plastering heat-insulating walls can be adopted, so the life cost and the property loss are not reduced!
Moreover, the thin plastering often has common quality problems of cracking and water inflow, and the maintenance of the outer wall of a high-rise building is a serious problem in the future.
The external wall roofing window heat bridge all is many, and the heat bridge is the passageway that the heat lost. And the thermal bridge can not be extinguished by the thermal insulation material with the lower thermal conductivity coefficient, the thermal insulation layer is too thick due to the thermal bridge, the outer wall occupies more land, the land is wasted, the thermal bridge has great influence on building with near-zero energy consumption, and the wall heat transfer increased by the thermal bridge often exceeds the energy consumption limit value specified in the near-zero energy consumption building technical standard GB/T51350. The auxiliary frame of the window is a large heat bridge, and when the external wall is provided with attachments such as a sunshade roller shutter and an anti-theft fence, the connecting iron piece penetrates through the heat insulation layer to form the heat bridge, so that the difficulty and the weight of the building with near zero energy consumption are increased, and particularly, the heat bridge of the section steel keel for decorating the curtain wall is too serious! The buildings which can save 65% of energy in public building construction are difficult, and the problem of building energy saving is solved. The materials of all layers of the roof are not adhered, the waterproof durability of the roof is poor, the roof leaks rain which is unknown, the whole roof is very wasted in reworking, and structures such as parapet walls and columns on the roof must penetrate through the heat-insulating layer to become a large heat bridge, so that the construction of low-energy-consumption buildings is influenced. And because the near-zero energy consumption is built, the heat consumption is measured by each household, the heat insulation of each household is limited, the heat insulation layer of the floor is too thick, the height of the building is greatly increased, the manufacturing cost is increased, the number of the building layers is reduced, and the land is wasted. The inner leaf and outer leaf concrete of the sandwich wall board installed by the current assembled sandwich concrete shear wall and frame structure are connected with the intermediate heat-insulating layer by fiber reinforced pulling and connecting pieces, although the pulling and connecting pieces have high strength, small diameter and poor bending rigidity, so the thickness of the intermediate heat-insulating layer cannot be larger than 100mm, if the outer leaf concrete is too thick, the thickness of the building heat-insulating layer with low energy consumption is too thin to meet the requirement.
The prefabricated wallboard of prefabricated processing of promotion assembled building adopts steel or aluminum plate's side forms lath now, and the cost is too high, is connected with the platform with the screw and still destroys the steel platform, increases prefabricated component cost, influences promotion building industrialization.
The above situations are technical obstacles for building buildings with near zero energy consumption and buildings with zero energy consumption which can save 90 percent of energy, and are also fundamental reasons which are difficult to solve for common building quality problems. Although European and some local governments in China encourage the construction of passive energy-saving houses which can save 90% of energy with high funds to play a positive role, the key technology of energy-saving and heat-insulating of barrier building envelopes cannot promote the construction of buildings which can save 90% of energy comprehensively, and the foundation problem cannot be solved by encouraging the construction of passive energy-saving houses with large funds, so that the financial burden of the government is increased.
Earthquake-resistant shock absorption of buildings in earthquake regions and wind resistance and lateral displacement resistance of high-rise buildings are important subjects of buildings. At present, the increase of column sections and the increase of reinforcing bars are mostly adopted, or the scheme of a shear wall structure with a rigid steel is adopted, seismic energy is consumed by plastic deformation of a main body structure, the structural damage degree is difficult to control, a bearing member or even a house collapses when the earthquake is damaged, the plastic deformation of the main body structure is difficult to repair, the occupied area of the shear wall structure is large, and the consumption of steel and cement is large. Experts in America, Japan and other countries and China already put forward shock insulation, energy dissipation and shock absorption and other various structure control technologies, have obvious technical effects, but have high manufacturing cost and high maintenance cost, and are mainly used for important buildings and special buildings. The concrete shear wall consumes much gravel and is heavy in weight.
Disclosure of Invention
The invention aims to provide an energy-saving heat-insulating wall and a roof, which comprise a layered structure and a construction method of the energy-saving heat-insulating wall and the roof, a prefabrication construction method and an installation construction method for producing and installing a prefabricated concrete sandwich board, a prefabricated concrete outer heat-insulating board, a prefabricated autoclaved aerated concrete sandwich board or a semi-finished product heat-insulating board of an assembled wall and the roof, an adhesive and a pre-embedded steel plate for corrosion prevention in prefabrication and installation of the energy-saving heat-insulating wall and the roof, so that the problems in the background art are solved, and the building enclosure structure technology is suitable for the requirements of the low-carbon society of the high-tech age.
An energy-saving insulating wall or roof features that an organic insulating layer is installed on the wall of basic layer, and the non-combustible insulating material is installed on the organic insulating layer to form an external insulating wall body with both organic insulating layer and non-combustible insulating material.
A second energy-saving heat-insulating wall and roof is an energy-saving heat-insulating roof which is formed by coating an adhesive outside an EPS plate installed on an outer wall to perform cement mortar plastering, or coating an adhesive on a heat-insulating layer of a concrete roof panel to cast a concrete protective layer of a roof in situ; gaps which are communicated up and down are not formed between the EPS boards and the base layer wall body, between the EPS boards and cement mortar plastering, so that a chimney effect is prevented from being formed when a fire breaks out; coating an adhesive on the side surface of an EPS board of the roof to adhere the EPS side surfaces into a whole, coating a waterproof sealing material between gaps at the upper part of the EPS board of the roof to enable the EPS board to become a waterproof layer, coating the adhesive on the EPS board of the roof to bond the EPS board with a cast-in-place concrete protective layer of the roof, installing an embedded steel plate on the concrete protective layer of the roof to be anchored with concrete, and installing a thermal insulation bridge cut-off of a roof structure on the embedded steel plate; the tensile bearing capacity between the bonding area of the EPS boards installed on the concrete roof panel and the EPS boards and the tensile bearing capacity of the embedded steel plates welded with the reinforcing mesh in the roof concrete protective layer are not less than the upward suction force applied to the roof cast-in-place concrete protective layer and the wind thrust applied to the roof structures.
A third energy-saving heat-insulating wall and roof is a prefabrication method for producing and processing a precast concrete sandwich board or a precast concrete outer heat-insulating board by using a low-strength and low-price material as a side formwork strip; the precast concrete sandwich panel comprises inner leaf concrete, a heat insulation layer and an outer leaf concrete or roof concrete protection layer, the precast concrete outer heat insulation plate comprises the inner leaf concrete, the heat insulation layer and an outer protection layer, and the thickness of the outer protection layer meets the requirement of fire hazard non-spreading; the prefabricated concrete sandwich panel or the prefabricated concrete outer insulation board is produced and processed by using a low-strength and low-price material as a prefabricated side formwork strip instead of a side formwork strip of a steel plate or an aluminum plate; the inner leaf concrete, the organic heat-insulating layer and the outer leaf concrete or the roof concrete protective layer or the outer protective layer are bonded into a whole by using an adhesive.
The fourth energy-saving heat-insulating wall and roof is a prefabricated autoclaved aerated concrete sandwich panel with inner leaf concrete as autoclaved aerated concrete slabs, and is used for installing an assembled sandwich outer wall of a frame structure, an indoor partition heating partition wall or an assembled sandwich roof panel; the precast concrete sandwich panel comprises inner leaf concrete, a heat insulation layer, outer leaf concrete of an outer wall or outer leaf concrete of a roof, and all layers are bonded layer by layer.
The fifth energy-saving heat-insulating wall and roof is an autoclaved aerated concrete semi-finished heat-insulating plate, an EPS plate is bonded with outer leaf concrete of an autoclaved aerated concrete plate, and basalt fiber cloth is further bonded on the outer leaf concrete of the autoclaved aerated concrete plate to form the autoclaved aerated concrete semi-finished heat-insulating plate; taking the autoclaved aerated concrete semi-finished product insulation board as an outer template of cast-in-place inner leaf concrete in a construction site, and installing a semi-fabricated sandwich concrete wall; or bonding and compounding the semi-finished product insulation board of the autoclaved aerated concrete with cast-in-place inner leaf concrete in advance to form a prefabricated concrete sandwich wallboard, and then installing the prefabricated concrete sandwich wallboard into a fully-assembled sandwich concrete wall.
A sixth energy-saving heat-insulating wall and roof is a semi-finished prefabricated heat-insulating plate, wherein BFRP cloth is adhered to an EPS plate to form the semi-finished prefabricated heat-insulating plate which is integrally adhered by the BFRP cloth; the semi-finished prefabricated heat-insulation plate is installed on a base wall body at a construction site for external wall heat insulation, or a semi-fabricated concrete external heat-insulation energy-saving wall body is installed on the construction site by taking the semi-finished prefabricated heat-insulation plate as a template of cast-in-place concrete, or the semi-finished prefabricated heat-insulation plate and cast concrete are bonded and compounded on a prefabricated platform to form a prefabricated concrete heat-insulation wallboard, the prefabricated concrete heat-insulation wallboard is installed into an assembled concrete external heat-insulation energy-saving wall body, and a non-combustible protective layer is arranged on the outer side of BFRP cloth.
Mounting a non-combustible heat-insulating material on a base wall, sticking BFRP cloth to the surface of the non-combustible heat-insulating material, sticking the BFRP cloth to the side surface of a door or window opening, sticking the non-combustible heat-insulating material to the base wall on the inner side, or fixing the BFRP cloth and the non-combustible heat-insulating material to the base wall by a plastic anchor bolt; the bonding width of the BFRP cloth and the door window side base layer wall body is not less than a specified value, and is not less than the tensile bearing capacity required by the BFRP cloth when the shearing force born by the design calculation window side acts on the BFRP cloth.
An EPS board is installed on a base layer wall, and gaps which are communicated up and down do not exist between the EPS board and the base layer wall and between adjacent EPS boards, so that fire spreading caused by a chimney effect formed in case of fire is avoided; then adhering BFRP cloth on the EPS board, wherein the BFRP cloth is also arranged on the heat-insulating layer on the side surface of the door and window opening and is arranged on the indoor base layer wall body; and then installing the non-combustible material on BFRP cloth, or/and installing a curtain wall decorative plate for fire prevention, or further installing a non-combustible heat insulation layer in the curtain wall decorative plate.
The invention has the technical effects that:
1. the reason that the organic heat-insulating material of the outer wall always catches fire in use is thin plastering, and the invention provides various energy-saving heat-insulating wall structures which can thoroughly put an end to the hidden trouble that the energy-saving heat-insulating wall is unsafe to prevent fire, and have important significance. Why is the thin-plastered thermal-insulation wall not well fire-resistant, but still the technical standards of thin-plastered thermal-insulation wall are being implemented in the technical standards? Because it is considered that the EPS boards have low strength and cannot bear the weight of a plastering layer, the weight of outer leaf concrete and the weight of outer wall attachments. The tensile strength of the EPS board is not less than 0.1MPa, namely 1kg/cm2However, the EPS plate has a small elastic modulus, is flexible, must be uniformly stressed, and cannot generate local stress concentration. As long as the adhesive is qualified in quality, concrete or cement mortar can be firmly bonded with the EPS boards, the durability is good, the cost is low, and the installation of the exterior wall attachments is safe and reliable. Experiments prove that the epoxy resin adhesive is used for simply and reliably bonding the embedded steel plate and the EPS plate, the safety of the attachment for installing the outer wall can be ensured, and the construction is convenient.
2. In the ninth embodiment, the adjacent EPS boards are adhered and connected into a whole, so that the tensile strength of the EPS boards is exerted, and the EPS boards play an important role in the safety of non-bearing external walls and wooden board walls in earthquakes, tornadoes and hurricanes, particularly masonry structures.
3. The BFRP is pasted on the side edge of the outer wall and the window, and the invention has the following functions:
1) the coefficient of heat conductivity of the BFRP cloth is 0.035-0.04 w/m.k, the BFRP cloth 3 is installed on the periphery of a door and window opening without increasing heat transfer, and the installation of the BFRP cloth is one of necessary conditions for eliminating the construction of near-zero energy consumption buildings on the door and window opening and an outer wall heat bridge. The window can not be moved to a position which is about 20-50 mm close to the outer corner of the window to be installed without installing BFRP cloth (the thermal resistance of an outdoor cold spot to the wall body around the window is not less than that of the main wall body, and the thermal bridge around the window is 0), and the thermal bridge around the wall body in the window can not be eliminated. 2) The BFRP cloth has extremely high tensile strength which is ten times to ten times of that of steel, for example, the BFRP cloth has the surface density of 350g/m provided by manufacturers2The common BFRP cloth is converted into data per meter according to national inspection report data, the minimum tensile strength standard value of the warp and weft directions reaches 7.2t/m,considering the safety factor of 2, the design value of the tensile strength is 3.6 t/m. The horizontal fiber of the BFRP cloth adhered to the side surface of the door and window opening is the horizontal pulling and connecting steel bar of the door and window opening, and can ensure the safety of installing the L-shaped embedded steel plate and the window, the sun-shading roller shutter and the anti-theft fence which are anchored with the steel plate on the heat-insulating layer of the outer corner of the door and window opening. The thermal bridge around the window and all attachments on the installation window and the outer wall are not eliminated, the thickness of the thermal insulation layer needs to be increased to compensate for the energy lost by the thermal bridge, the manufacturing cost is increased, and the land is wasted, otherwise, the thickness of the thermal insulation layer can be reduced by eliminating the thermal bridge, the manufacturing cost is reduced, and the land is saved. 3) The BFRP cloth is stuck on the outer wall, so that the safety of installing the outer wall attachments is undoubtedly and greatly increased. 4) The non-combustible heat insulation material is adhered outside the EPS board, the non-combustible heat insulation material is unstable in stress performance and may be poor in freeze thawing resistance, the BFRP cloth is adhered on the non-combustible heat insulation material to form a protective layer of the non-combustible heat insulation material, the adhesive is a waterproof material, and the service life of the non-combustible heat insulation material is prolonged. 5) The periphery of the door and window opening is provided with vertical-wire rock wool plates for fire prevention, the rock wool is required to be blocked and protected by BFRP cloth, and heat-insulating mortar can be smeared on the BFRP cloth on the side edge of the window opening. 6) The horizontal fiber of the BFRP cloth adhered to the side face of the door and window opening is the anti-shearing steel hoop of the window, which is beneficial to avoiding the tearing (shearing) damage of the non-bearing wall body to the wall body at the corner of the window under the action of wind power. The BFRP cloth installed on the outer wall is a steel hoop around the building, so that the BFRP cloth can increase the safety of the outer wall, increase the earthquake and wind disaster resistance of the outer wall and increase the wind disaster resistance of the wood outer wall no matter the outer wall swings at earthquake or high wind (the swing of a high-rise building is particularly prominent), for example, in the areas where tornadoes, hurricanes and typhoons frequently occur, as long as the columns and the foundation of the main body structure are firmly anchored, the outer wall is difficult to damage, and the general quality problem of water inflow caused by cracking of the outer wall is thoroughly solved. 7) Due to the BFRP cloth, the BFRP cloth can be used for prefabricating the autoclaved aerated concrete sandwich external wall panel and the autoclaved aerated concrete semi-finished product insulation board, so that the autoclaved aerated concrete panel can meet the energy-saving and heat-insulating requirements of a near-zero energy consumption building on a building enclosure. 8) The BFRP cloth is green fiber, has low price, low installation cost and large effect, is matched with other materials meeting the requirement that the endurance life is not less than 50 years, can ensure that the endurance life of the energy-saving heat-insulating wall is not less than 50 years, and can ensure that the endurance life of the thin-plastered heat-insulating wall is only 25 years。
4. The invention not only solves the problems of fire safety and poor durability of the energy-saving heat-insulating wall body, but also eliminates large caves (thermal bridges) with heat loss of the outer wall and the roof, reduces the thickness of the heat-insulating layer, saves the land and has important significance for building buildings with energy consumption close to zero, which saves 90 percent of energy. The horizontal section of the window in the attached figure shows that the foaming material is arranged in the window section, the existing door and window section is cancelled with the installation of the fixed sash window frame section to eliminate the fixed sash window frame thermal bridge, the embedded steel plate is installed to eliminate the installation of the external wall attachment thermal bridge, the thickness of the heat-insulating layer can be reduced by 70 percent compared with the built passive house, the indoor use area is increased, and the cost of the external wall heat-insulating project is reduced by 250-300 yuan/m compared with the built passive energy-saving house2In addition, the building cost is reduced by increasing the height of the building without increasing floor separation heating, and compared with the built passive energy-saving house, the building cost can be reduced by about 500 yuan/m2Or more than the above, saves land because the building height is not increased, saves 6-10% of land in total, and only increases the cost by 80-150 yuan/m compared with the house which saves 65% of energy2. The invention fundamentally improves the quality of the building envelope structure, and reduces the construction cost from the sustainable development perspective, thereby being easier to promote and popularize the construction of buildings with near zero energy consumption.
5. At present, various non-bearing walls of a frame structure do not need finite element software to analyze internal force, so the non-bearing walls cannot be designed according to the limit state of the bearing capacity, which is the root cause of the damage of the non-bearing walls in earthquakes and strong winds, and the condition is not suitable for the requirements of the low-carbon society of the high-tech era on buildings. The internal force is analyzed by finite element software for a non-bearing wall body of a certain project, under the action of earthquake and wind load, the bending moment of the side wall of the wall between windows is 5-6 times of that of the wall without a hole, and the shearing force of the corner of the wall between windows is 10 times or even 30 times of that of the wall without a hole. When the non-bearing wallboard is designed into an assembled frame structure, finite element software is adopted to analyze internal force, so that shearing force and bending moment of different positions of an outer wall can be obtained, then ribs are arranged according to mechanics and concrete structure theories, particularly, the outer-hanging wallboard with inner and outer leaves made of light aggregate concrete or autoclaved aerated concrete is light in weight, the earthquake action is in direct proportion to the weight, even if load combination is carried out on rare earthquakes, the wind load combination value is far smaller than the wind load combination value, and the wind load combination value is generally far smaller than the floor load combination value, so that the safety of the outer wall can be ensured in the case of earthquakes or strong winds. Because the safety problem of the non-bearing wall cannot be solved without the wall structure of the invention, the finite element software is not specified to carry out internal force analysis on the non-bearing wall for years, and the non-bearing wall is allowed to be damaged in strong wind and earthquake. The design of the non-bearing outer wall of the invention adopts finite element software to analyze the internal force, then reinforcing bars according to mechanics and concrete structure theories and installing basalt fiber cloth on the side surface of a door and window opening, and also popularizes a Building Information Model (BIM) technology, which is not repeated in the specific implementation mode.
6. The invention provides various energy-saving heat-insulating walls and roofs, and aims to compare the energy-saving heat-insulating walls and roofs of different technologies for project preference. The invention recommends:
1) the newly-built project is recommended to be designed into a frame structure or a frame-core tube structure, and the lightweight aggregate concrete assembled sandwich wall body of the third implementation mode is installed on the outer wall, or the autoclaved aerated concrete assembled sandwich wall body of the fourth implementation mode is installed on the outer wall. The existing building of the frame structure can be disassembled into the original masonry wall, and the assembled sandwich wall body is also installed. Because:
the fireproof composite plate has the advantages of best fireproof performance (the thermal resistance of light aggregate concrete or aerated concrete is high, flame hardly damages the light aggregate or the aerated concrete when a fire disaster occurs, the EPS plate in the fireproof composite plate is protected from being heated and shrunk, the loss is low), light weight, less steel consumption, steel and cement saving, high bending height, high bending rigidity, thin wall thickness, land saving, large indoor use area, simple structure, simple installation, contribution to reducing earthquake damage by reducing earthquake action, less carbon emission in a construction stage and less maintenance in long-term use.
Secondly, the non-bearing concrete sandwich wall body or the concrete sandwich roof panel uses lightweight aggregate concrete as inner and outer leaf concrete, and uses lightweight aggregate as aggregate of outer leaf concrete of the precast concrete sandwich shear wall panel, and the lightweight aggregate is preferably ceramsite. The existing ceramsite raw materials are various, besides shale and clay, domestic garbage, sludge, river bottom mud and fly ash can be used as raw materials to produce the ceramsite, solid waste is consumed, environmental pollution is reduced, sandstone which consumes natural resources is reduced, and the development direction of green building materials is met. The current ceramsite is used for processing building blocks and used as aggregate of ground concrete cushion, and the utilization is limited. If the inner and outer leaf concrete is of a low grade such as LC15 or LC10, although the strength is low, the conglomeration is force, according to the theory of material mechanics, when the thickness of the concrete sandwich wall plate of LC15 is 250mm (the thickness of the EPS plate is 100mm), the bending rigidity is about 2 times or more of that of a common concrete floor slab, the bending height is also increased about 1 time, but the combined value of the load born is far only the floor slab load (1/4-1/2), the low grade inner and outer leaf concrete can meet the design requirement of the bending compression resistance bearing capacity, and is beneficial to reducing the bending deformation.
2) The external thermal insulation engineering of the external wall recommends adopting the first structure of the implementation mode, meets the requirements of different fire-proof grades when the thickness of the non-combustible thermal insulation material is different, and has the advantages of simple installation, low manufacturing cost and random decoration. And the incombustible heat-insulating material can be timely installed in the process of installing the EPS boards, so that the possibility of fire hazard of the EPS boards in the construction process is almost zero, the fire safety in long-term use is ensured, and the fire safety of the EPS boards installed on the outer walls in construction is increased.
The second embodiment is suitable for areas where the non-combustible heat-insulating material is inconvenient to purchase, such as inconvenient vertical-filament rock wool boards, the cement mortar plastering layer is bonded with the EPS boards, BFRP cloth is installed outside, once the EPS boards shrink when heated in case of fire, the outer cement mortar protective layer is wrapped by the BFRP cloth and cannot fall off, and the EPS boards are difficult to contact open fire and are difficult to spread when fire disasters happen. After disaster, the drillable holes for maintenance penetrate through the cement mortar protective layer, polyurethane foam is injected for heat preservation, the polyurethane foam can be bonded with the EPS board and the cement mortar layer, and the maintenance is simple.
3) The prefabricated concrete sandwich roof panel of the third embodiment or the prefabricated autoclaved concrete sandwich roof panel of the fourth embodiment is adopted for mounting the load-bearing heat-insulation waterproof integrated assembled roof in the roof of the new construction, the durability is good, the building industrialization process is promoted, the roof of the existing building is mounted by adopting the structure of the second embodiment, the waterproofness is good, and the durability is good.
4) The total thickness of the inner leaf concrete and the outer leaf concrete of the sandwich wall body of the fabricated concrete shear wall is about 0.3m on average, the requirement on the strength of the shear wall concrete is high, the consumption of steel, cement and sand is high, the stress performance of the EPS plate is not favorably exerted, the waste is realized, the manufacturing cost is high, the carbon emission is high in the construction stage, the building weight is too heavy, the outer wall thickness occupies a large area, and the shear wall is basically irreparable when being damaged during earthquake; moreover, the specification stipulates that the assembled shear wall allows the construction height to be reduced by about 10m compared with the cast-in-place shear wall, namely, the construction height is reduced by about 3 layers, and the land is wasted, so the design choice is not recommended in the invention.
The non-bearing lightweight aggregate concrete sandwich wall body is arranged on the frame structure, the total thickness of the inner leaf concrete and the outer leaf concrete is about 0.1-0.12 m, the total thickness of the concrete column section is considered to be about equal to the total thickness of the concrete 02m, the concrete amount is reduced by about 30% compared with the sandwich concrete shear wall, and the mining amount of sand stones is greatly reduced because the non-bearing lightweight aggregate concrete sandwich wall body can use ceramic grains as aggregates, thereby being beneficial to protecting natural resources.
Description of problems related to the embodiment:
1) in the embodiments, there is a term of "tensile strength", where the tensile strength is the tensile bearing capacity of BFRP fabrics with a certain width, such as 25mm, 50mm or 100mm, or the tensile bearing capacity of BFRP fabrics with a certain width bonded to each other with a certain length, or the tensile bearing capacity of BFRP fabrics with a certain width bonded to concrete with a certain length, rather than the tensile bearing capacity of BFRP fabrics per unit area, and the tensile bearing capacity per unit area is called tensile strength.
2) The adhesive in the various embodiments of the present invention includes various adhesives having an adhesive effect, such as a water-soluble emulsion adhesive, an interface agent which is diluted and added with powder and other materials, cement polymer mortar, a waterproof sealing material, a caulking agent, and the like. In the embodiments, all the adhesives required for bonding are described in the "description of the present invention with respect to the use of the adhesive", and are not described in detail in the embodiments.
3) When the reinforcing steel bars of the inner leaf concrete and the outer leaf concrete are welded at the joint of the prefabricated sandwich wall panel or the prefabricated sandwich roof panel, various fireproof cloth can be temporarily stuck on the organic heat-insulating layer to ensure the construction fireproof safety, and the implementation mode is not described.
The invention is different from the disclosed technology in that:
1. the various energy-saving heat-insulating exterior wall fireproof structures of the invention are never known and are not obvious.
2. The wall structure with the nine embodiments having important effects on earthquake resistance and wind resistance of the building never exists. The thin plastering of sticking the EPS boards in Europe from 70 years to 50 years till now does not utilize the tensile strength of the EPS boards in engineering, all the problems related to stress in buildings only consider reinforcing steel bars and cement, no one thinks that the tensile strength of the EPS boards can be utilized, and no one thinks that the installation of environment-friendly BFRP cloth plays an important role in building earthquake resistance and wind resistance, so the ninth embodiment is not obvious.
3. The construction and installation method and the prefabrication processing method of various energy-saving heat-insulating walls and roofs of the invention are never adopted.
4. The method for adhering the embedded steel plate to the EPS plate or other heat-insulation plates by using the epoxy resin adhesive has not been proposed, and the method for adhering the EPS plate or other heat-insulation plates to the base layer by using the epoxy resin adhesive (the net sand can be added) has not been proposed.
The reliability of pasting the pre-buried steel plate on the EPS plate can be ensured only by pasting with the epoxy resin adhesive, and the problem of building near-zero energy consumption buildings due to the heat loss obstacle of connecting piece heat bridges is solved. The EPS board or other heat-insulating boards are stuck to the base layer by using the epoxy resin adhesive (sand can be added), so that the problem that the falling accident of the heat-insulating boards of the external heat-insulating wall body is endless can be thoroughly solved. "how to construct a passive room in an 18-story high-rise dwelling house reported on 26/3/2020? "it says in the text that every layer of outer wall glued polystyrene board sets up structural bracket bearing heated board, but the bracket can not solve the suction of wind when strong wind burden wind pressure and pull down the heated board, only paste the heated board firmly on the basic unit wall body the fundamental method of problem that just solves.
The method for adhering the embedded steel plate to the building by using the epoxy resin adhesive or other water-insoluble adhesives and adhering the heat-insulating plate to the base layer is a new idea which is never available and is not obvious, and because people are easily limited by existing concepts and knowledge, the difficult problem of adhesion reliability which is difficult to solve for a long time is solved. And the corrosion prevention of the steel part is performed before use, and other materials are not added into the epoxy resin adhesive for adhering and mounting the embedded steel plate for modification, so that the epoxy resin adhesive becomes the corrosion prevention epoxy resin adhesive, the corrosion prevention processing difficulty of the steel part can be reduced, the construction is convenient, and the corrosion prevention effect is good.
The quality of the wall energy-saving heat-preservation engineering is generally poor: the problems of cracking, water inflow, poor durability, poor fire prevention, poor roof waterproof performance and the like exist, and the essence of common building quality is that certain technical problems are not clarified. The fact that the inorganic heat-insulating material can only replace the organic heat-insulating material in a limited range in the wall technology proves that the building with near-zero energy consumption is difficult to build by using the inorganic heat-insulating material. Because any material has advantages and disadvantages, the wall technology is a technical system, and all problems can be solved by one material but not a certain specialty. Background of the inventionproblems of fire safety of a customs energy-saving heat-insulating wall, structural safety of the customs energy-saving heat-insulating wall, elimination of a heat bridge by customs, construction of a near-zero energy-consumption building, earthquake resistance and wind resistance of the customs building and general quality of the customs building can be solved only by supporting knowledge in different fields (chemical fields) through disciplines (building structures, building energy conservation, building physics, building thermal engineering, building construction, building waterproofing and the like) and reasonably utilizing various materials (such as adhesive, non-metal powder and the like), exerting the advantages of different materials to avoid the defects, optimizing the structure of the building enclosure structure and solving the problems of the current building enclosure structure. The invention is the result of long-term cross-professional and cross-field study and research by the patent applicant, is a principle invention, and is never known or obvious.
Drawings
Fig. 1 is a horizontal cross-sectional view of a window of an external thermal insulation energy-saving thermal insulation wall body according to a first embodiment, which shows that a non-combustible thermal insulation material 9 is stuck and installed on an EPS board installed in a construction site during external thermal insulation of an external wall, and the non-combustible thermal insulation material is as thick as 50mm, so that the energy-saving thermal insulation wall body meeting the highest fire protection requirement is formed; fig. 1 shows that the installed exterior wall attachment 8 is a curtain wall trim panel.
Fig. 2 is a horizontal cross-sectional view of a window of an external thermal insulation energy-saving thermal insulation wall according to a first embodiment, which shows that a non-combustible thermal insulation material 9 is adhered to an EPS board installed in a construction site during external thermal insulation of an external wall, the non-combustible thermal insulation material is thinner, for example, 20mm, so as to form an energy-saving thermal insulation wall satisfying a medium-grade fire protection requirement, and a BFRP cloth is adhered to the non-combustible thermal insulation material 9, and can be optionally decorated.
Fig. 3 is a horizontal cross-sectional view of a window of an energy-saving heat-insulating wall body according to a second embodiment, which shows that a cement mortar plastering layer 8-1 is formed on an EPS plate installed on a construction site during external heat insulation of an external wall, so that the energy-saving heat-insulating wall body meeting the medium-grade fireproof requirement is formed.
Fig. 4 is a vertical cross-sectional view of the energy-saving insulation roof according to the second embodiment, which shows that a roof concrete protective layer 8-2 is provided on an EPS board installed on a concrete roof panel at a construction site, and an embedded steel plate 4-4 is provided on the roof concrete protective layer 8-2.
FIG. 5 shows a horizontal section structure of a non-load-bearing assembled sandwich wall body installed on an outer wall of a frame structure at a window and an embedded steel plate structure, wherein the wall body structure can meet the requirement of highest-grade fire resistance. The non-bearing assembled sandwich wall body can be installed by using the lightweight aggregate concrete prefabricated concrete sandwich panel of the third embodiment, and can also be installed by using the prefabricated autoclaved aerated concrete sandwich panel of the fourth embodiment.
Fig. 6 shows a vertical cross section of a precast concrete sandwich panel for installing a roof in accordance with a third embodiment, and may also show a vertical cross section of a precast autoclaved aerated concrete sandwich roof panel in accordance with a fourth embodiment.
Fig. 7 is a plan view showing the installation of the side molding strips 11 on the platform in the process of manufacturing the precast concrete sandwich panel according to the third embodiment. Fig. 7 shows the precast concrete sandwich panels being disassembled at the sill wall, the left and right sides of which are positioned outside the girder at a level, and the upper and lower sides of which show the disassembled vertical joints of the adjacent precast concrete sandwich panels at the sill wall. The oblique line part in the figure is that the external wall panel of the precast concrete sandwich panel is positioned at the outer side of the story height girder, and the EPS boards and the outer leaf concrete 8-3 which are adjacent at the joint are required to be connected with each other; but the outer leaf concrete and the EPS boards are connected outside the oblique lines. And in the third embodiment, the prefabricated concrete sandwich panel can be disassembled at the side edge of the door and window opening, and the prefabricated platform can be produced due to the narrow width and is convenient to transport although one more joint is formed during installation. In addition, when the autoclaved aerated concrete sandwich board is prefabricated, the detachment is simplest according to the side edge of the door and window, the mounting structure refers to the third embodiment, and the difference is that the prefabricated autoclaved aerated concrete sandwich board door and window side edge can be adhered with through-length thin-wall angle steel because the rigidity of the side wall of the wall between the doors and windows needs to be increased, and the requirements of mounting the doors and windows and mounting the heat insulation broken bridge of attachments at the periphery of the door and window are met.
FIG. 8 is a sectional view taken along line A-A of FIG. 7, wherein the prefabricated concrete sandwich panel is processed to a height of about 20mm from the designed layer height H, and is installed by filling aluminum silicate fireproof heat-insulating cotton at the horizontal joints and filling waterproof sealing material outside the joints or/and installing waterproof cover plates. The trapezoid cross section marked with 11-1 on the side face of the window is a trapezoid EPS board side template strip 11-1, the EPS board side template strip 11-1 plays a supporting role (only point bonding is needed, and removal is convenient) for the EPS board side template strip on the periphery of the window and door and window opening rock wool arranged on the inner side, the EPS board side template strip 11 on the side edge of the window can be thickened without the trapezoid EPS board side template strip 11-1, or other supporting measures are adopted.
FIG. 9 is a sectional view taken along line B-B of FIG. 7, with the precast concrete sandwich panel constructed at the vertical joint of the sill wall at the outer side of the girder.
Fig. 10 is a cross-sectional view through C-C of fig. 7, with the precast concrete sandwich panel constructed at the vertical joint of the sill wall at the outside of the girder.
Fig. 9 and 10 show that the inner and outer leaf concrete of the precast concrete sandwich panel at the vertical joint of the edge is retracted by a certain width, for example, about 50mm, but the EPS panel is not retracted, the retracted width is just used for installing the EPS side form lath 11, and the extended horizontal steel bar is easily put into the EPS panel side form lath, while in the case of the steel plate or aluminum side form lath, the extended steel bar needs to be drilled on the metal mold lath, the work load is large, and the damage is large! When in installation, adjacent EPS boards are mutually extruded and adhered or in a step-shaped lap joint manner, after horizontal reinforcing steel bars (the reinforcing steel bars which extend outwards are shown in the figure) are mutually welded, adhesives are coated on the EPS boards exposed inside and outside the joint, and then the EPS boards at the joint are adhered by pouring inner leaf concrete and outer leaf concrete along a joint template (preferably adding a micro-expanding agent); after the curing of the precast concrete sandwich board is finished, withdrawing the trapezoid EPS board side formwork strips 11-1 for reuse, taking the rest side formwork strips 11 as packaging materials of the edge of the precast concrete sandwich board until installation, and adding packaging protection to the weak parts of the edge of the precast concrete sandwich board during packaging, such as woven bags and the like.
Fig. 11 is a cross-sectional view showing that after the prefabricated concrete sandwich panel is prefabricated and cured, the trapezoidal EPS panel side formwork strip 11-1 is removed, the semi-finished prefabricated concrete sandwich panel is turned over, and the BFRP cloth 3 is adhered.
FIG. 12 shows a seventh embodiment in which a noncombustible insulating material 9 is attached to a basement wall and a door/window opening side surface.
Fig. 13 shows that in the ninth embodiment, an adhesive is coated on the side surface of the EPS board, or cement polymer mortar 12 is coated to fill the gap, so that the EPS board is bonded and connected integrally, and BFRP cloth 3 is further bonded to the outer side of the EPS board.
Fig. 1-3, 5 and 12 show that BFRP cloth 3 is arranged on the outer wall and the side edge of the window, L-shaped embedded steel plates 4-1 are adhered and arranged at the outer corner of the window, embedded steel plates 4-2 are arranged at the rest positions of the outer wall, the embedded steel plates 4 are collectively called embedded steel plates 4, decorative lines 19 are arranged around the outdoor window, and the decorative lines 19 are adhered and fixed by screws and adhesives. The method also means that the window leaves the inner leaf concrete 1 and is connected with the L-shaped embedded steel plate 4-1, and means that a heat preservation strip is arranged between the outer side of the window frame and the decorative line 19, so that the thermal resistance of the window outdoor cold spot to the inner leaf concrete 1 is not less than that of the main wall body, the thermal bridge around the door and window opening is '0', and the heat preservation strip can be arranged by sticking and wrapping BFRP cloth by using EPS (expanded polystyrene) strips or vertical-filament rock wool strips; the BFRP cloth 3 at the side of the indoor window is smeared with thermal insulation mortar 16. Fig. 1 to 3 all show that the fireproof heat insulating material 7 is installed between the connecting iron member 15-1 for installing the attachment of the outer wall and the pre-buried steel plate 4 on the heat insulating layer of the energy-saving heat insulating wall body, because the pre-buried steel plate 4 will be thermally detached when a fire occurs if the fireproof heat insulating material 7 is not installed. The rock wool wires of the vertical-wire rock wool boards made of the non-combustible heat-insulation materials on the periphery of the window are perpendicular to the side face of the window, the rock wool wires of the vertical-wire rock wool boards made of the non-combustible heat-insulation materials on the outer wall are perpendicular to the outer wall, and the direction difference of the vertical-wire rock wool boards is 45 degrees in the drawing, so that the direction difference of the rock wool wires in the vertical-wire rock wool boards at different positions is different.
Detailed Description
The first implementation mode comprises the following steps: referring to fig. 1, the energy-saving heat-insulating wall and roof of the embodiment is composed of a base wall 1, an organic heat-insulating layer 2 and a non-combustible heat-insulating material 9; the non-combustible heat-insulating material 9 is a vertical-filament rock wool board, a foamed cement board and the like; the organic heat-insulating layer 2 is arranged on the base layer wall body 1 (the adhesive is pasted or the plastic expansion nails are used for assisting in fixing), no up-down through gap exists between the organic heat-insulating layer 2 and the base layer wall body 1, no up-down through gap exists between adjacent organic heat-insulating layers 2, the pasting area is not less than a certain percentage, if not less than 90%, the expert counseling determines that once fire flames enter the gap, the fire spreading caused by the chimney effect formed by the through of the gap is avoided; then installing the non-combustible heat-insulating material 9 on the organic heat-insulating layer 2, or installing the non-combustible heat-insulating material and the composite heat-insulating board of the organic heat-insulating layer on the base wall (pasting the non-combustible heat-insulating material 9 on the organic heat-insulating layer 2 in advance), wherein the non-combustible heat-insulating material 9 is positioned at the outer side of the organic heat-insulating layer 2 after installation, and the thickness of the non-combustible heat-insulating material 9 is determined according to the fire-proof requirement, such as the thickness is 50mm when the highest-level fire-proof requirement is met, and the thickness;
according to 6.7.3 regulations in GB50016, noncombustible materials with the thickness of not less than 50mm are adopted on two sides of an organic heat-insulating layer of the sandwich heat-insulating wall body, the requirement of fire resistance limit is met, and the sandwich heat-insulating wall body can be applied to various buildings. When the thickness of the non-combustible heat-insulating material is 50mm, the non-combustible heat-insulating material conforms to the specification of 6.7.3 in the GB50016 standard; when the thickness of the non-combustible heat-insulating material is 20mm, the non-combustible heat-insulating material is used for replacing the existing thin plastering protective layer with the thickness of 3-5 mm of the thin plastering heat-insulating wall body, and the fire safety of the energy-saving heat-insulating wall body is greatly improved.
Furthermore, an embedded steel plate 4 and high-strength durable fiber cloth 3 are additionally arranged, the organic heat-insulating layer 2 is an EPS plate, or when the organic heat-insulating layer 2 is a hard-foam heat-insulating plate, tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the high-strength durable fiber cloth 3 is basalt fiber cloth, called BFRP cloth 3 for short, or other fiber cloth capable of replacing BFRP cloth; the embedded steel plates 4 comprise L-shaped embedded steel plates 4-1 at the corners of the outdoor door and window and embedded steel plates 4-2 installed at the rest positions of the outer wall, the L-shaped embedded steel plates 4-1 are installed at the corners of the outdoor door and window, so that when the window is installed, a connecting iron piece of the window is fixed with the L-shaped embedded steel plates 4-1, the safety of the installed window is ensured, and the sunshade roller shutter outside the window, the prefabricated outdoor window board and the decorative lines around the window are convenient to install; the embedded steel plates 4-2 arranged at the rest positions of the outer wall correspond to the positions of the outer wall attachments needing to be arranged on the outer wall, and the EPS plates are preferably adhered to the base layer wall at the embedded steel plates 4-2 arranged at the positions corresponding to the positions of the heavier outer wall attachments; bonding the embedded steel plate 4 with the EPS plate and bonding with the heat-insulating layer around the window by using an adhesive; the tensile bearing capacity generated by the bonding area between the embedded steel plate 4 and the EPS plate is not less than the pulling force of the embedded steel plate 4 by the weight of the attachment for installing the outer wall and the combined value of the negative wind pressure load, and certain safety reserve is provided, if the safety coefficient is 2, the safety coefficient is determined by expert counseling; adhering BFRP cloth 3 to the surface of a non-combustible heat-insulating material 9 by using an adhesive, adhering the BFRP cloth 3 to the side surface of a door and window opening and the non-combustible heat-insulating material 9 on the side surface of the door and window opening, adhering the BFRP cloth to an inner base wall 1 and adhering the BFRP cloth to the side surface of a deformation joint, or penetrating the BFRP cloth 3, the non-combustible heat-insulating material 9 and an organic heat-insulating layer 2 by using a plastic anchor bolt to be fixed with the base wall 1 (when the BFRP cloth is externally decorated by coating, the non-combustible heat-insulating material 9 is prevented from absorbing water, being pulverized and; the bonding width of the BFRP cloth and the door window side base layer wall body is not less than a specified value, such as 150mm, and is not less than the shearing force born by the design calculation window side and acts on the BFRP cloth, the tensile bearing capacity required by the BFRP cloth, if the design value of the tensile strength of the BFRP cloth does not meet the shearing bearing capacity, the number of layers of the bonded BFRP cloth should be increased, certain safety reserve should be provided, and the bonding range should meet the design specification. The outside of the BFRP cloth 3 can be painted for decoration, pasted with tapestry bricks for decoration or installed with curtain wall decoration plates for decoration.
The EPS boards are isotropic and stable in stress performance, while the mechanical properties of various known non-combustible heat-insulating materials 9 are often unstable, and are easy to damp, freeze, thaw and pulverize, although the tensile strength of the vertical-filament rock wool boards in the direction perpendicular to the outer wall is close to that of the EPS boards, the anisotropy is different, and once the tensile strength is reduced after being damped, the embedded steel plates 4-2 installed at the positions of the outer wall except the window are bonded with the EPS boards, but the embedded steel plates 4-2 are not bonded with the non-combustible heat-insulating materials 9; however, the L-shaped embedded steel plate 4-1 arranged at the corner of the outdoor door window opening can be bonded with the non-combustible heat insulation material 9, the BFRP cloth is adhered to the side face of the window opening after rotating 90 degrees from the positive vertical face of the door window opening and is bonded with the indoor base layer wall body 1, and the safety of installing the L-shaped embedded steel plate 4-1, installing the door window on the embedded steel plate 4-1, installing the sun-shading roller blind and installing the anti-theft fence can be met only by the tensile bearing capacity of the BFRP cloth, so that the L-shaped embedded steel plate 4-1 can be bonded with the non-combustible heat insulation material 9 at the corner of the outer wall window, but the bonding safety of the embedded steel plates 4-2 arranged at other positions. The energy-saving heat-insulating wall body can also adopt the following fireproof safety structure according to the requirements:
1) the heat-insulating layer arranged on the periphery of the door and window opening is made of a non-combustible heat-insulating material 9 with a certain thickness, such as a vertical-wire rock wool board (the rock wool is vertical to the side wall of the window) with the thickness of 50mm and installed by sticking and nailing; the door and window opening is a flame channel, and non-combustible heat insulation materials 9 are arranged on the periphery of the door and window opening of the building with any fire-proof grade;
2) a fireproof heat-insulating material 7 is further added, when a curtain wall decorative plate (the curtain wall decorative plate is also an outer wall attachment) or other outer wall attachments 8 (such as an air conditioner supporting plate) is installed, self-tapping self-drilling screws (hereinafter referred to as screws) are used for connecting the connecting piece for installing the curtain wall decorative plate or installing other outer wall attachments with the embedded steel plate 4, and the fireproof heat-insulating material 7 (various adhesives can be pasted or other installation modes) is padded between the connecting piece and the embedded steel plate 4, as shown in fig. 1 and 2; if the fireproof heat-insulating material 7 is the aluminum silicate cloth or felt with the compression thickness not less than the specified value (such as 10mm), the fireproof heat-insulating material can also be a rock wool board, but the fireproof temperature of the rock wool board is lower than that of the aluminum silicate cloth or felt, and the fireproof heat-insulating material with higher fireproof temperature is selected to be safer, so that the embedded steel plate adhered to the EPS board is not easy to be heated and fall off when fire breaks out, and the attached matter of the installed outer wall can not fall off within the allowed time; each building has various external wall attachments, such as window anti-theft fences, deformation joint cover plates, decorative lines, water drop pipes, light air conditioner supporting plates (such as the air conditioner supporting plates are made of aluminum alloy materials), and even advertising boards are installed; if the non-combustible heat-insulating material 9 is thick, when the curtain wall decorative plate is installed, a connecting iron piece 15-2 is required to be arranged in the non-combustible heat-insulating material 9, the connecting iron piece 15-2 is connected with the embedded steel plate 4 through a screw, and the connecting iron piece 15-2 is conveniently connected with the embedded steel plate 4 through the connecting iron piece 15-2 when the outer wall attachment is installed; when the outer wall decoration is a curtain wall decoration plate, a horizontal steel keel and a vertical steel keel are required to be installed, the steel keel is positioned in BFRP cloth 3 and connected with a pre-buried steel plate 4, or the steel keel is connected with a connecting iron piece 15-2, as shown in figure 1;
3) after the window is installed, coating adhesive on BFRP cloth 3 adhered to the inner side of the window chamber, coating heat-insulating mortar 16 or other non-combustible heat-insulating materials (such as vertical-filament rock wool boards), and polishing the surface of the heat-insulating mortar 16 by coating cement; if the heat-insulating mortar is perlite mortar with the heat conductivity coefficient not more than 0.1 w/m.k, and the like, once the heat of fire is caught, the heat-insulating mortar is not easy to penetrate through the polymer adhesive for destroying and pasting the BFRP cloth 3, so that the fire loss is reduced, the thermal resistance of the base layer wall body at the periphery of the window is increased, and the thermal bridge of the base layer wall body at the periphery of the window is further reduced;
4) and a heat insulation material 6, such as BFRP cloth with a certain thickness, can be adhered to the back surface or the two surfaces of the embedded steel plate 4 to increase the heat insulation performance of the embedded steel plate.
In the embodiment, the non-combustible heat-insulating material is adhered to the outer side of the organic heat-insulating layer for external heat insulation of the outer wall to form the composite heat-insulating layer, so that the fire safety requirements of different levels are met, and the high-strength and durable BFRP cloth is adhered to the non-combustible heat-insulating material 9 as the protective layer, so that the protective layer of the BFRP cloth cannot crack and has high durability; and the adhesive for sticking the BFRP cloth is a waterproof material, so that the energy-saving heat-insulating wall has good fire resistance, good water resistance and good durability. This embodiment still pastes pre-buried steel sheet on the EPS board, and performance EPS board tensile strength eliminates the connection iron spare heat bridge of installation outer wall attachment, just probably satisfies the requirement of building nearly zero energy consumption building to the outer wall with thin heat preservation.
The construction method for installing the outer wall attachment 8 comprises the following steps of installing an EPS board on the outer wall, installing a non-combustible heat insulation material 9, installing a pre-buried steel plate 4 and installing BFRP cloth:
1) the general regulations in the building industry are required to be met; if the material quality should accord with the relevant regulation of national standard and industry standard, the energy-saving heat-insulating wall body layer structure, the appearance quality should accord with the regulation of technical standard and design, the quality certification system is implemented, the technical quality control measure, the material storage and storage, the package and the transportation should accord with the corresponding regulation, the bonding test should be carried out in advance, the tensile strength should not be less than the regulation of industry standard, the tensile bearing capacity should not be less than the regulation of design, a specially-assigned person should be responsible for preparing adhesive and the like, the matching proportion should be accurate, on the basis of the self-inspection qualification of construction enterprises, the project which needs to be detected by the legal unit, the project record should be concealed, the fireproof measure; marking out a vertical line by using a theodolite and hanging the line to form an outer wall surface control line; during engineering construction and within 24 hours after the engineering construction, the environmental temperature is not lower than 5 ℃, if the adhesive is an adhesive which can be used at a low temperature, the adhesive is not limited by the temperature, and the construction cannot be carried out in windy days and rainy days above 5 level, and the like;
2) when the energy-saving heat-insulating wall is constructed, the design is deepened according to the design requirements, and the positions and the specifications of the embedded steel plates 4 arranged on the EPS plate and the side face of the window are marked by drawing or indicated by characters; when a near-zero energy consumption building is built, in order to eliminate a heat bridge formed by small thermal resistance of a heat-insulating layer of a wall body around a window at present, the length of an L-shaped embedded steel plate 4-1 at the corner of a door and window opening is not suitable to extend into a window frame or less length of the L-shaped embedded steel plate is suitable to enter the window frame (if the length is not more than 50% of the thickness of the window frame), when the window is installed, the window is installed on the side surface close to the outdoor corner of the window away from a base layer wall body 1, a connecting iron piece 15 for installing the window is fixed with the L-shaped embedded steel plate 4-1 at the outdoor side of the window (generally, the outer edge of the window frame is installed at the corner from the outdoor side of the window to BFRP cloth 3 by about 20-50 mm, the thermal resistance of the wall body around the window is increased, when the window is installed, the window is installed and fixed in an internally and externally, the indoor embedded steel plate 4-3 of the near energy consumption building and the outdoor L-shaped embedded steel plate 4-1 are not connected; the width of the L-shaped embedded steel plate 4-1 at the corner of the door and window opening is convenient for installing a window and installing attachments around the window, and if the width is not smaller than 50mm, the L-shaped embedded steel plate position is easy to find when installing the sun-shading roller shutter and installing the anti-theft fence and installing the exterior wall attachments such as the decorative lines around the window and the like; the L-shaped embedded steel plate 4-1 is a hot-dip galvanized steel plate with the thickness of 1.5-2 mm (the L-shaped embedded steel plate is too thick and is not easy to bend), the embedded steel plate 4-2 can be a cold-galvanized steel plate with the thickness of not less than 4mm (the embedded steel plate is thick and has good corrosion resistance), and effective anti-corrosion measures are taken for the embedded steel plate 4 to ensure that the durability is not less than 50 years;
3) the outer heat-insulating wall body is pasted with the EPS board, the embedded steel plate is arranged on the EPS board, and the non-combustible heat-insulating material 9 pasted on the EPS board meets the following regulations:
firstly, performing a bonding test on the non-combustible heat-insulating material 9 and the EPS board in advance, wherein the damage is to the EPS board or the non-combustible heat-insulating material 9 instead of a bonding interface;
secondly, adhering the EPS board on the base layer wall 1 by using an adhesive in advance to perform a test, and determining the selected adhesive;
thirdly, performing a bonding test on the embedded steel plate 4 and the EPS plate by using an adhesive in advance, and performing a bonding test on the embedded steel plate 4 and the window vertical-filament rock wool plate, wherein the damage is to be positioned on the EPS plate or the vertical-filament rock wool plate but not to be positioned on a bonding interface;
fourthly, pre-buried steel plates meeting the specification and quality requirements are prepared in advance, BFRP cloth strips are pasted on the surfaces of the prepared L-shaped pre-buried steel plates 4-1 and the pre-buried steel plates 4-2 at the rest positions of the outer wall (the BFRP cloth strips can be pasted on the pre-buried steel plates by using an anticorrosive epoxy resin adhesive and play a role of corrosion prevention at the same time), and two sides of the BFRP cloth strips extend out of the outer sides of the pre-buried steel plates 4;
fifthly, marking a vertical line on the EPS boards which are installed on the outer wall by using a theodolite, hanging the vertical line to form an outer wall surface control line, and polishing the parts, protruding beyond the allowed parts, of the EPS boards;
drawing a mark for installing the embedded steel plate 4 on the EPS plate stuck to the outer wall, ironing or cutting a groove at the position for installing the embedded steel plate 4, sticking the embedded steel plate 4 into the groove of the EPS plate by using an adhesive, penetrating a BFRP cloth strip extending out of the edge of the embedded steel plate 4 and the EPS plate by using a plastic expansion nail, bonding the embedded steel plate 4 and the EPS plate and fixing the embedded steel plate with the base layer wall 1, accelerating the construction progress, wherein the core rod of the plastic expansion nail in a heating area is not a steel rod but a plastic, and the outer surface of the embedded steel plate is flat with the EPS plate;
4) the test of sticking and mounting the BFRP cloth should be performed in advance:
firstly, coating an adhesive on a non-combustible heat-insulating material 9, bonding a BFRP (bidirectional forwarding protocol) cloth with the non-combustible heat-insulating material 9, detecting that the vertical tensile strength of the bonding of the BFRP cloth and the non-combustible heat-insulating material 9 is not less than a specified value after the adhesive is cured, and damaging the bonding on the non-combustible heat-insulating material 9;
bonding the BFRP cloth with concrete, namely bonding a BFRP cloth strip with a certain width (such as 100mm) with the concrete or cement mortar by using an adhesive for a certain length (such as 50-100 mm), wherein the color of the BFRP cloth should deepen to explain that the BFRP cloth is bonded (on the premise that the adhesive test is qualified), and performing parallel tensile strength detection after curing; the pasting test data is not less than a certain number, such as 8-10, the average value of the test results is taken, if the number exceeds 10% of the test data, the final effective number is not less than a specified number, such as not less than 5, and therefore the width of the BFRP cloth which needs to be pasted with the base wall is determined when the door and window meet the shearing resistance bearing capacity required by the design; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; if the tensile strength design value of the BFRP cloth does not meet the shearing resistance bearing capacity (the maximum shearing force is positioned at the corner of the side surface of the wall between the windows), the number of layers of the adhered BFRP cloth is increased, certain safety reserve is required, and the adhering range meets the design rule;
thirdly, performing mutual bonding test on BFRP cloth, mutually bonding BFRP cloth strips with certain width (such as 100mm) with certain length (such as 50-100 mm), deepening the color of the BFRP cloth, bonding the BFRP cloth, performing parallel tensile strength detection after health maintenance to determine the parallel tensile strength of mutual lap bonding of the BFRP cloth, determining the lap bonding width required by the BFRP cloth to meet the strength requirements of lap bonding and the like, and delivering to a legal unit for detection on the basis of qualified self-inspection of construction enterprises; the sticking test data is not less than a certain number, such as 8-10, the average value of the test results is taken, if the number exceeds 10% of the test data, the last effective number is not less than a specified number, such as not less than 5;
5) after the EPS boards are pasted and installed on the base layer wall body 1, the embedded steel plates 4 are pasted and installed and the non-combustible heat insulation material 9 is pasted and installed in time, so that the EPS boards pasted on the outer wall are prevented from spreading fire once a fire breaks out; coating or scraping an adhesive on the EPS boards, sticking and mounting the non-combustible heat-insulating materials 9 on the EPS boards in a mutual adhesion way in the whole area, assisting the fixation by using plastic expansion nails, sticking the non-combustible heat-insulating materials 9 and the EPS boards in a staggered joint way, and mounting the non-combustible heat-insulating materials 9 such as vertical-filament rock wool boards on the side surfaces of door and window openings; if the BFRP cloth is decorated by coating, and the noncombustible heat-insulating material 9 is a vertical-filament rock wool board, cement polymer mortar or cement polymer mortar (without sand, the mortar is called as the mortar, and the cement polymer mortar with a small amount of fine sand can also be used as the mortar) is scraped and smeared at the joint of the vertical-filament rock wool board and the exposed vertical-filament rock wool part of the external corner, or the joint is sealed by scraping and smearing a waterproof sealing material to prevent rainwater from corroding the rock wool board, and then the BFRP cloth is pasted and installed;
6) the construction and installation method for sticking and installing the BFRP cloth 3 on the non-combustible heat-insulating material 9 comprises the following steps:
firstly, determining the position of a joint for installing BFRP cloth 3, wherein the BFRP cloth 3 is installed in the following two modes which are selected according to construction convenience:
a. horizontal installation: the width of the purchased BFRP cloth meets the use requirement and reduces the joints as much as possible (when the order quantity is large, manufacturers of the BFRP cloth can produce according to the width of the order requirement), the width of the BFRP cloth meets the layer height and the lap length (if the lap length is 100mm), each layer of the installed BFRP cloth can be horizontally wound and installed, the less the joints are, the better the BFRP cloth is, the BFRP water is spread out and pasted and installed (if a roll of BFRP cloth with the length of 100m is inserted into a vertical rod of a movable base on a scaffold board, the BFRP cloth is wound along with the rotation of the pasted BFRP cloth, so the joints are the least); the horizontal joint is positioned in the central line of the beam (including the ring beam) or the length of the support entering the beam is not less than a certain range, if the length is not less than the range of 100mm, the horizontal joint is not suitable to be positioned on the non-bearing wall between windows without columns, otherwise, the equal strength requirement after lap joint and pasting is required to be met, and the BFRP cloth 3 on the upper layer of the joint is pressed on the BFRP cloth 3 on the lower layer for pasting;
b. vertical installation: the BFRP cloth 3 which is installed once is required to be as long as possible, so that the horizontal seams are reduced and the requirements of the horizontal seams are met; the vertical joint of the BFRP cloth is preferably positioned at the window sill wall, the width of the BFRP cloth 3 in the door and window opening is required to meet the bonding width of the BFRP cloth to the side edge of the window partition wall and the base layer wall, the BFRP cloth 3 is not required to be widened to be bonded with the indoor base layer wall 1 at the side edge of the window partition wall, and otherwise, the strength requirements of lap bonding and the like are required to be met; the vertical joint of the BFRP cloth 3 is not suitable for being positioned in a small range, such as within 200mm (not absolute, most of which are proved to be almost the same according to the analysis result of the internal force of finite element software on the outer wall of a certain project), which is specified by the distance from the side edge of the door and window on the wall between windows; winding the BFRP cloth on a plastic thick pipe, gradually putting down the BFRP cloth from top to bottom and vertically spreading the BFRP cloth, and sticking and installing the BFRP cloth on a non-combustible heat-insulating material 9;
the horizontal installation or the vertical installation of the BFRP cloth comprises the width that the BFRP cloth is pasted on the side surface of the deformation joint;
secondly, coating an adhesive on the non-combustible heat-insulating material 9, adhering the BFRP cloth on the non-combustible heat-insulating material 9 in a full-area manner, rolling the BFRP cloth by using a scraper or a trowel (preferably using a special small rolling machine), slightly permeating the BFRP cloth by the adhesive, and adhering the BFRP cloth when the color of the BFRP cloth is deepened; the bonding width of the BFRP cloth and the side base wall of the wall between the windows is not less than a specified value, and the parallel tensile bearing capacity of the BFRP cloth and the base wall in the bonding width is not less than the shear-resistant bearing capacity required by the design, so that certain safety reserve is required; if the bonding width between the BFRP cloth and the base wall body is not satisfied, the BFRP cloth is bonded by a fiber-impregnated epoxy resin adhesive (the detection is required in advance); if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of the adhered BFRP cloth layers is increased, the adhering range meets the design regulation, and certain safety reserve is required. When the non-combustible heat insulation material is a vertical-filament rock wool board, cement polymer mortar is firstly coated or scraped on the rock wool exposed at the joint or the external corner of the vertical-filament rock wool board to be bonded with the vertical-filament rock wool board, and the BFRP cloth is then bonded after the cement polymer mortar is cured;
description of the drawings: the mounted BFRP cloth meets the requirements of the shear-resistant bearing capacity of the side edge of the wall between the windows, and the two conditions are as follows:
1, the parallel tensile bearing capacity of the BFRP cloth in the range of the pasting width of the BFRP cloth and the side base wall of the wall between windows meets the requirement;
and 2, the tensile strength of the BFRP cloth meets the requirement. As the column distance of the building is far larger than the layer height, the finite element software analysis proves that: the shearing force of the corner part of the side of the window wall is maximum, the shearing force of the middle part of the side of the door and window opening is '0' and is distributed in a triangular shape, so when the tensile strength of the BFRP cloth does not meet the requirement, the number of layers for sticking the BFRP cloth is locally increased at the corner part of the window wall, and the requirement of parallel tensile bearing capacity of the sticking width of the BFRP cloth and the wall body of the base layer of the side of the window wall is met; but the bending moment in the middle of the side edge of the wall between the windows is large, and the vertical steel bars need to be installed in the inner leaf concrete and the outer leaf concrete of the edge of the wall between the windows in a reinforcing way; the shearing force and the bending moment of the edges of the upper window sill wall and the lower window sill wall are usually small, and the bonding width of the BFRP cloth and the base wall is not less than a specified value.
After BFRP cloth is pasted and installed on the outer wall, doors and windows can be installed, window sunshade roller shutters can be installed, anti-theft fences can be installed, curtain wall decoration plates can be installed, external air conditioner supporting plates can be installed (for example, the air conditioner supporting plates are made of aluminum alloy materials) or other outer wall attachments can be installed.
The second embodiment: the energy-saving heat-insulating wall and the roof of the embodiment are the energy-saving heat-insulating wall which is formed by coating adhesive on the outer surface of the heat-insulating layer of the outer wall and performing cement mortar plastering, as shown in figure 3, or the energy-saving heat-insulating roof which is formed by coating adhesive on the heat-insulating layer of the concrete roof panel and performing cast-in-place roof concrete protection layer, as shown in figure 4; the heat-insulating layer is composed of a base layer 1, an organic heat-insulating layer 2, a protective layer 8 and an embedded steel plate 4; the base layer 1 is a base layer wall body 1 or a concrete roof panel 1-2, the organic heat insulation layer 2 is an EPS board, or when the organic heat insulation layer 2 adopts a hard foam heat insulation layer (comprising an organic hard foam heat insulation board or an inorganic hard foam heat insulation board, such as a foam concrete board), tests prove that the base layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the protective layer 8 is a cement mortar protective layer 8-1 outside the EPS boards stuck on the base layer wall body 1, or the protective layer 8 is a cast-in-place concrete protective layer 8-2 on the EPS boards installed on the concrete roof board; the EPS is stuck and fixed on the base layer 1 by using an adhesive, if an EPS thin strip is inserted into a gap (EPS boards have certain elasticity, and can be tightly stuck and installed as much as possible, so that the gap is prevented from being adversely affected by heat preservation and is favorable for water prevention), the situation that no vertically through gap exists between the EPS boards and the base layer wall 1, no vertically through gap exists between the EPS boards, the sticking area is not less than a certain percentage, and the situation that once a fire is lost, the fire is spread due to the fact that the fire penetrates through the gap and the flame enters the gap to form a chimney effect is avoided; the method comprises the following steps that an adhesive is used for bonding and connecting an embedded steel plate 4 with an EPS plate of an outer wall, the EPS plate is adhered to a base layer wall 1 at the embedded steel plate 4 at the position where a heavier outer wall attachment is installed (for example, the position where an air conditioner supporting plate is installed, the position where the embedded steel plate used for overhauling of an outer wall is installed and the position where an advertising board is installed), the tensile bearing capacity generated by the bonding area between the embedded steel plate 4 and the EPS plate is not less than the weight of the installed outer wall attachment and the tensile force generated by the worst load combination value under the action of negative wind pressure, a certain safety reserve is required, if the safety coefficient is 2, and an expert council determines to form an installation outer; coating an adhesive on the side surface of the EPS board of the roof to paste the EPS side surfaces into a whole (if the bearing capacity of the original roof concrete board is not enough, coating the adhesive on the side surface of the EPS board of the roof to paste the EPS board into a whole can greatly improve the bending height of the roof board, improve the bending resistance and the shearing resistance, and can improve the waterproof capacity of the EPS board); coating a waterproof sealing material between gaps on the upper part of an EPS board of a roof, or coating a cement polymer waterproof coating prepared from an acrylate copolymerization type emulsion which meets the requirements of glass transition temperature and has strong adhesive force, water resistance and excellent durability (the cement polymer waterproof coating is also a waterproof sealing material substantially, and attention is paid to that the purchased cement polymer waterproof coating meets the requirements of the adhesive instruction of the invention and has strong adhesive force, and water is not added into the purchased cement polymer waterproof coating), bonding the gaps between the EPS board and a roof wall body or a structure, inserting an EPS board sheet when the gaps are large, and waterproof sealing the gaps to ensure that the EPS board becomes a waterproof layer; coating an adhesive on an EPS board of an outer wall, plastering a cement mortar protective layer 8-1 and the EPS board, wherein the thickness of the cement mortar protective layer 8-1 is not less than a certain value, such as not less than 15mm, so as to meet the requirement of fire spread prevention, and ensure that no communicated air flowing cavity exists inside and outside the EPS board installed on the outer wall and on the side surface; coating an adhesive on the EPS board of the roof to bond the cast-in-place concrete protective layer 8-2 of the roof with the EPS board; roughening treatment or dovetail grooves can be formed on the EPS surface (the EPS board for roof insulation engineering is generally not needed, in fact, plastering or concrete pouring is carried out on the EPS board, roughening treatment is not needed when an adhesive with strong adhesive force is coated, but the organic heat insulation layer 2 is a hard foam heat insulation board such as an XPS board possibly needed); anchoring the pre-buried steel plate 4 and the roof concrete protective layer 8-2 (such as welding the pre-buried steel plate 4 and a steel bar net in the roof concrete protective layer 8-2), and mounting roof structures (such as prefabricated parapet walls, prefabricated artistic handrails, steel columns and the like) on the pre-buried steel plate 4 to form a heat-insulation bridge-cut-off waterproof structure for mounting the roof structures, and building a sunlight room on a heat-insulation roof; tensile bearing capacity between the bonding area of the EPS boards installed on the concrete roof boards 1-2 and the EPS boards, tensile bearing capacity of the embedded steel plates 4 welded with the steel bar meshes in the roof concrete protection layers 8-2, upward suction force borne by the roof cast-in-place concrete protection layers 3-2 under the action of a load combination value of negative wind pressure and thrust force borne by the roof structures are required to be not less than, and certain safety reserves are required to be reserved, if the safety factor is 2, the safety factor is determined by expert counseling. The thermal insulation layer is installed in a dry paving way in the specification GB50207 of roof engineering quality acceptance, and all the layers are not connected, so that a roof structure cannot be installed, a bridge cannot be insulated and broken, and the water resistance is poor.
The following fireproof safety structure is adopted for the energy-saving heat-insulating wall body, and is adopted according to needs, as shown in figure 3:
1) the heat-insulating layer arranged around the indoor door and window opening is a non-combustible heat-insulating material 9 with a certain thickness, such as a vertical-wire rock wool board with the thickness of 50 mm;
2) the high-strength durable fiber cloth 3 and the fireproof heat-insulating material 7 are added, for example, the fireproof heat-insulating material 7 is an aluminum silicate cloth or felt with the compression thickness not less than a certain specified value (for example, 10 mm); the high-strength durable fiber cloth 3 is basalt fiber cloth, called BFRP cloth 3 for short, or other fiber cloth capable of replacing BFRP cloth; the fireproof heat-insulating material 7 is positioned on the outer side of the embedded steel plate 4 and connected with the embedded steel plate 4, the BFRP cloth 3 is pasted on the surface of an outer wall cement mortar protective layer 8-1 by using an adhesive, and is also pasted on the side surface of a door and window opening, is pasted with the non-combustible heat-insulating material 9, is pasted with the inner side base layer wall body 1 and is pasted on the side surface of a deformation joint; when the outer wall attachment 8 is installed, screws penetrate through the connecting piece 15-1 for installing the outer wall attachment, the BFRP cloth 3 and the fireproof heat-insulating material 7, and the connecting iron piece 15-1 for installing the outer wall attachment 8 is fixed with the embedded steel plate 4;
3) after the window is installed, coating adhesive on BFRP cloth 3 adhered to the inner side of the window chamber, and coating thermal mortar 16 or other non-combustible thermal insulation materials;
4) and a heat insulation material can also be adhered to the back surface or the two surfaces of the embedded steel plate, for example, the heat insulation material is BFRP cloth, so that the heat insulation performance of the embedded steel plate is improved. The embodiment forms the energy-saving heat-insulating wall body with medium fire prevention safety.
The embodiment is that the cement mortar protective layer is used for replacing the non-combustible heat-insulating material 9 of the first embodiment, the embodiment can be adopted in areas where the purchase of the non-combustible heat-insulating material 9 is inconvenient, certain fireproof requirements are met, although the EPS board is easy to shrink when being heated in case of fire, the external cement mortar protective layer is wrapped by the BFRP cloth and cannot fall off, the EPS board is difficult to contact open fire and is difficult to burn, and the fire is difficult to spread. After fire, the maintenance drillable holes penetrate through the cement mortar protective layer, polyurethane foam is injected for heat preservation, the polyurethane foam can be bonded with the EPS board and the cement mortar layer, and the maintenance is simple.
The construction method for installing the heat-insulating layer 2, the embedded steel plate 4, the outer wall cement mortar protective layer 8-1 or the roof cast-in-place concrete protection layer 8-2 and the BFRP cloth 3 on the outer wall and the roof comprises the following steps:
1) the method is characterized in that the method is in accordance with general regulations in the building industry, for example, the material quality is in accordance with relevant regulations of national standards and industrial standards, the energy-saving heat-insulating wall body and the energy-saving heat-insulating roof are in a layered structure, the appearance quality is in accordance with the regulations of technical standards and design, and a quality certification system is implemented; the materials are stored, packaged and transported to meet corresponding regulations, a bonding test is carried out in advance, the tensile strength is not less than the industrial standard regulation, the tensile bearing capacity is not less than the design regulation, a specially-assigned person is responsible for preparing an adhesive and the like, a specially-assigned person is responsible for the mixing ratio of cement mortar and concrete, the mixing ratio is accurate, a test piece is reserved on concrete poured in each batch, on the basis of qualified self-inspection of construction enterprises, some projects need to be detected by legal units when being detected by the legal units, hidden project records, fireproof measures and the like are required; marking out a vertical line by using a theodolite and hanging the line to form an outer wall surface control line; during the construction period of installing the insulating layer 2 and pasting the BFRP cloth and within 24h after completion, the environmental temperature is not lower than 5 ℃, if the adhesive is an adhesive which can be used at a low temperature, the restriction can not be caused, and the construction can not be carried out in windy days and rainy days above 5 grade, etc.;
2) when the energy-saving heat-insulating wall body and the roof are constructed, the deepening design is carried out according to the design requirements, and the positions and the specifications of the embedded steel plates 4 arranged on the outer wall heat-insulating layer, the side surface of the window and the roof concrete protective layer 8-2 are marked by drawing or written; the outer wall embedded steel plates 4 comprise L-shaped embedded steel plates 4-1 of outdoor corners of door and window openings and embedded steel plates 4-2 arranged at the rest positions of the outer wall; the embedded steel plate 4-4 installed on the roof is anchored with the roof concrete protective layer 8-2, and if the embedded steel plate is welded with a steel bar net in the protective layer 8-2; when a near-zero energy consumption building is built, in order to eliminate a heat bridge formed by small thermal resistance of a heat insulation layer of a wall body around a window at present, the length of an L-shaped embedded steel plate 4-1 on the side surface of the window is not suitable to extend into the window frame or less length is not more than 50% of the thickness of the window frame, so that the window is installed on the side surface close to an outdoor corner of the window away from a base layer wall body 1, a connecting iron piece 15 for installing the window is fixed with the L-shaped embedded steel plate 4-1 on the side of the outdoor window (generally, the outer edge of the window frame is installed at a corner (about 20-50 mm) from the outside of the window to a BFRP cloth 3), the connecting iron piece 15 for installing the window on the indoor side is preferably installed in an internally-externally-staggered mode when the window is installed, the connecting iron piece 15 for installing the window on the indoor side is connected, the indoor embedded steel plate 4-3 of the near-zero energy consumption building and the outdoor L-shaped embedded steel plate 4-1 should not be connected; the width (along the height direction of the side face of the window) of the L-shaped embedded steel plate is not smaller than 50mm (if the L-shaped embedded steel plate is too narrow to install the window and install the connecting iron piece of the sunshade rolling curtain, the position of the L-shaped embedded steel plate is not easy to find), the specification of 4-1 of the L-shaped embedded steel plate meets the construction convenience requirement of conveniently installing the window and installing the peripheral attachments of the window, and the position of the L-shaped embedded steel plate is easy to find when installing the sunshade rolling curtain, installing the anti-theft fence, installing the peripheral decorative lines and other external wall attachments of the window; the L-shaped embedded steel plate 4-1 is a hot-dip galvanized steel plate with the thickness of 1.5-2 mm (the L-shaped embedded steel plate is too thick and is not easy to bend), the embedded steel plate 4-2 can be a cold-galvanized steel plate with the thickness of not less than 4mm (the embedded steel plate is thick and has good corrosion resistance), and effective anti-corrosion measures are taken for the embedded steel plate 4 to ensure that the durability is not less than 50 years;
3) paste installation EPS board and install pre-buried steel sheet on EPS board on basic unit 1 should accord with following regulation:
firstly, adhering an EPS board to a base layer 1 by using an adhesive, and installing a non-combustible heat-insulating material 9 such as vertical-filament rock wool on the side surface of a door and window opening;
sticking the pre-embedded steel plate to the EPS plate by using an adhesive in advance to perform a bonding test, and performing a bonding test on the L-shaped pre-embedded steel plate 4-1 and the window vertical-wire rock wool plate to ensure that the L-shaped pre-embedded steel plate is damaged on the EPS plate or the vertical-wire rock wool plate but not on a bonding interface is qualified;
preparing an embedded steel plate 4 in advance, sticking BFRP cloth strips 3 (which can be locally stuck) on the surfaces of an L-shaped embedded steel plate 4-1 and an embedded steel plate 4-2 which need to be installed on the outer wall, wherein two sides of the BFRP cloth strips 3 extend out of the outer side of the embedded steel plate 4;
fourthly, a theodolite is used for marking a vertical line on the EPS board of the outer wall and hanging the line to form an outer wall surface control line, and the part of the EPS board protruding beyond an allowable value is polished;
drawing a mark for installing the embedded steel plate 4 on an EPS plate of the outer wall, ironing or cutting a groove at the position of the embedded steel plate 4, adhering the embedded steel plate 4 to the groove of the organic heat-insulating layer 2 by using an adhesive, and fixing the embedded steel plate 4 and the base wall 1 by using a plastic expansion nail to penetrate through a BFRP cloth strip 3 extending out of the edge of the embedded steel plate 4 and the EPS plate, wherein the core rod of the plastic expansion nail in the heating area is not a steel rod but plastic;
welding a pre-buried steel plate 4-4 (recommended selection) on a reinforcing mesh in the roof cast-in-place concrete protective layer 8-2, or welding an anchoring reinforcing steel bar with a hook on the pre-buried steel plate 4-4 and anchoring the anchoring reinforcing steel bar into the roof cast-in-place concrete protective layer;
4) the EPS board seams of the roof are required to be sealed in a waterproof mode before the roof concrete protective layer 8-2 is poured, and the construction method for sealing the seams of the EPS board of the roof in the waterproof mode is as follows:
firstly, coating waterproof sealing materials for seams of the EPS boards of the roofs twice on the seams at the upper parts of the seams of the EPS boards of the roofs and the structures (such as parapet walls) of the roofs, and coating 2 times after drying for the first time, so as to ensure that the seams are waterproof, reliable and free of omission; the EPS board sheets can be inserted into the larger gaps to be pasted to reduce the gaps and then waterproof and sealed, so that the roof EPS boards become waterproof layers, and the waterproof and waterproof roof board has vapor permeability without a vapor barrier layer, so that the use function of the roof concrete protective layer on the EPS boards is not influenced even if the roof concrete protective layer cracks, and rainwater cannot penetrate through the EPS boards;
secondly, coating an adhesive (namely an interface agent) on the side of the EPS boards when the EPS boards are installed, bonding the EPS boards into a whole, and then performing secondary water prevention at the joints of the EPS boards, wherein the water prevention is more reliable, and after the poured roof concrete protective layer 8-2 is bonded with the EPS boards into a whole, the bending height of the roof boards comprises the heat-insulating layer EPS boards and the roof concrete protective layer 8-2, so that the bending bearing capacity and the shearing resistance bearing capacity of the roof boards are greatly improved; the construction method for waterproof sealing of the side joint of the EPS board of the roof can also be applied to the installation of the EPS board on the outer wall, the waterproof requirement of the outer wall is not strict, the side joint of the EPS board adhered to the outer wall can be coated with an adhesive (namely an interface agent), the EPS boards are mutually adhered to form a whole, the waterproof sealing material is not required to be coated on the joint of the EPS boards, and the adhesive coated by adhering BFRP cloth on the EPS boards is also a waterproof material;
5) further, the construction method for performing cement mortar plastering on the surface of the heat-insulating layer of the outer wall and pouring the concrete protective layer on the heat-insulating layer of the concrete roof in situ comprises the following steps:
firstly, arranging a reinforcing mesh on an EPS board of a roof, wherein the specification of the reinforcing mesh meets the design specification, and installing an embedded steel plate 4 on the reinforcing mesh;
after the EPS boards stuck on the outer wall and the roof and the installed embedded steel plates 4 are checked to be correct, cement mortar plastering is carried out in time (namely, a part of EPS boards and embedded steel plates are installed to be plastered, so that fire prevention is facilitated, mechanical plastering of the outer wall is recommended, and manual plastering and mechanical plastering are matched), an adhesive is coated or sprayed on the EPS boards of the outer wall or the EPS boards of the roof insulation boards, an adhesive coating is wet and full and should not be omitted, and a cement mortar protective layer 8-1 is formed along with coating or spraying and smearing the premixed cement mortar on the surface of the EPS boards of the outer wall; or after the reinforcing mesh is arranged on the EPS board arranged on the roof, pouring the cast-in-place concrete of the roof onto the surface of the EPS board along with coating or spraying an adhesive, vibrating and compacting the cast-in-place concrete of the roof by using a vibrator, ensuring that the poured concrete enters the lower part of the reinforcing mesh and is bonded with the EPS board, and ensuring that the thickness and the strength grade of the cast-in-place concrete protective layer 8-2 of the roof meet the design requirements; the coating is prevented from being not wet and not full to cause weak bonding force when plastering or pouring concrete after the painted adhesive is dried;
the mixing proportion of the cement mortar protective layer 8-1 on the outer wall is that the mixing proportion of cement and sand is 1 to (2.5-3), the recommended sand mixing amount is more, which is favorable for reducing cracking, and the cement mixing amount is more, which aggravates shrinkage cracking; when the ratio of cement to sand is 1: 3, an additive can be added to adjust the workability; the sand is medium coarse sand meeting the technical standard, the mud content of the sand is not more than 3 percent, and the quality of the cement and the additive meets the industrial standard;
fourthly, the cement mortar protective layer 8-1 is preferably plastered for two times; brushing the first plastering, brushing a layer of plain slurry on the first plastering during the second plastering, ensuring firm bonding between the two plastering layers, preferably brushing the plastering surface into a straight and non-smooth fine brown eye shape, rubbing the rough surface with a wood trowel, and smearing and pressing the rough surface with a steel trowel when the surface has the grout thread, pressing the grout thread and exposed sand grains down and leveling to ensure that the surface of the mortar is in the fine brown eye shape, scraping the plastering surface with a 2m scraping bar, and flattening and squaring the lines, thereby meeting the requirements of the industry standard on the surface smoothness and the verticality of an external wall; firstly, carrying out small-area cement mortar plastering construction (commonly called a sample plate wall), and then carrying out large-area plastering construction; the joint of the front cement mortar plastering and the rear cement mortar plastering is coated with an adhesive or bonded by plain cement, so that the plastering at the joint is prevented from cracking;
at least one of the following technical measures is adopted to ensure that the cement in the outer wall cement mortar plastering and the roof cast-in-place concrete has hydration reaction with water, so that the cement mortar and the cast-in-place concrete can be maintained, and the cracks generated by the cement mortar and the concrete are controlled within an allowable range:
a. crack-resistant fibers are arranged in the premixed cement mortar and concrete, the parameters of the crack-resistant fibers are determined according to the manufacturer specification and tests, and the crack-resistant effect is poor because the willow flocculent polypropylene chopped fibers are not used; scattering the crack-resistant fibers by using a stirrer, and fully mixing the broken crack-resistant fibers with cement mortar or concrete; or materials which can play a role in thickening and water retention, such as cellulose ether MC and the like can be added into cement mortar or concrete; for example, the crack-resistant fiber is polypropylene chopped fiber or other crack-resistant fiber, the polypropylene chopped fiber with better quality is added, even at higher temperature (about 35 ℃), the drying, cracking, dehydration, pulverization and damage of the cement mortar can be effectively slowed down within about two days after the cement mortar is applied to the wall, or the coating film is added for better maintenance (the roof is very convenient for coating film for maintenance); the polypropylene chopped fibers are the lowest price of various crack-resistant fibers, play an important role in crack resistance in the early hardening stage of cement mortar and concrete, but the polypropylene chopped fibers disappear in the later stage, and the wall surface provided with high-strength fiber cloth on the outer wall only needs to be crack-resistant by the polypropylene chopped fibers in the early hardening stage of the cement mortar, and certainly, higher-grade crack-resistant fibers can be used;
b. the surface of the cement mortar or concrete is required to be watered and maintained in time after being dry by touch, and particularly, the cement mortar plastering layer and the cast-in-place concrete protective layer are required to be frequently watered and maintained in time when the temperature is high, so that the cement mortar plastering layer and the cast-in-place concrete protective layer can be maintained under a humid condition, and the phenomena that the cement mortar and the cast-in-place concrete cannot meet the strength requirement due to water shortage in the maintenance process and are pulverized and cracked are avoided;
the above-mentioned a strips and b strips are preferably adopted at the same time; because the base layer of plastering is the polymer EPS board, the EPS board can not release water vapor to cure cement sand plastering or cure concrete, and watering curing is necessary in most of the time unless in low-temperature rainy seasons;
and the related technical provisions of the external wall plastering construction method are required to be executed, such as: a theodolite is used for marking out a vertical line and hanging the line to form a control line, and a cake and a screed are pasted on the EPS board in advance before plastering (the cake and the screed can be pasted on the EPS board by using cement polymer mortar); when construction is carried out at a lower temperature, antifreezing measures such as an early strength agent, an antifreezing agent, heat preservation covering and the like are added to prevent cement mortar or concrete from being damaged by freezing injury; the mortar or concrete is used up in time after being mixed, thereby avoiding being scrapped after too long storage time. The construction method for performing thick cement mortar plastering on the EPS boards can be applied to plastering of concrete walls and block walls, and the plastered base wall is required to be clean, so that the cement mortar plastering on the walls is easier to bond and maintain than the plastering on the EPS boards, but is not suitable for plastering on rock wool;
the quality problem of plastering on the brick wall of the sintered clay brick is less, because the rough cement mortar on the surface of the clay brick is easy to be bonded with the brick wall, a large amount of pores in the brick wall are easy to absorb water, and water is poured on the brick wall of the clay brick before plastering enough, and in the cement mortar curing process, the brick wall can continuously release water vapor to cure the cement mortar, so the cement mortar plastering quality on the brick wall is generally good. However, the quality problems of plastering on concrete walls are more, and the common quality problems of plastering cracking, hollowing and even falling frequently occur, one reason is that the concrete surface is smooth, cement mortar plastering and concrete are not well bonded and are easy to fall off, and the other reason is that concrete absorbs less water and releases less water vapor in cement mortar maintenance. Plastering on EPS boards is more difficult: how to ensure reliable bonding of the cement mortar protective layer 8-1 or the roof cast-in-place concrete protective layer 8-2 with the EPS board and the strength of cement mortar plastering to meet the requirements? Although this embodiment solves this problem and allows a metal mesh to be sandwiched and an inorganic fiber mesh to resist cracking, the BFRP cloth 3 is attached to the protective layer 8-1 of cement mortar in this embodiment, and there is no need to sandwich a metal mesh or an inorganic fiber mesh. The outer wall and the roof of the embodiment are both building envelope structures which bond mortar and concrete materials with the EPS boards for heat preservation, and the outer protective layers and the EPS boards need to be bonded by adhesives.
6) Further, the construction method for sticking and installing the BFRP cloth 3 on the cement mortar protective layer 8-1 of the outer wall comprises the following steps:
firstly, a bonding test of BFRP cloth and concrete is carried out in advance, BFRP cloth strips with a certain width (such as 100mm) are bonded with the concrete by using an adhesive for a certain length (such as 100mm), the color of the BFRP cloth is deepened to explain that the BFRP cloth is bonded in the whole area, and after the BFRP cloth is cured, parallel tensile strength detection is carried out; the bonding test data is not less than a certain number, such as 8-10, the average value of the test results is taken, if the average value exceeds 10% of the test data, the last effective number is not less than a specified number, such as not less than 5; thereby determining the width of the BFRP cloth required to be adhered to the base wall when the door and window meet the shearing resistance bearing capacity required by the design; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of layers of the adhered BFRP cloth is increased at the position where the door and window hole does not meet the shearing resistance bearing capacity, certain safety reserve is required, and the adhering range is in accordance with the design rule;
secondly, performing a mutual adhesion test of BFRP cloth in advance, adhering BFRP cloth strips with a certain width (such as 100mm) with a certain length (such as 100mm), wherein the color of the BFRP cloth is deepened to explain that the BFRP cloth is adhered in the whole area, and performing parallel tensile strength detection after health maintenance to determine the parallel tensile strength of mutual overlapping adhesion between the BFRP cloth strips, thereby determining the overlapping adhesion width required by the BFRP cloth meeting the strength requirements of overlapping adhesion and the like, and delivering the BFRP cloth to a legal unit for detection on the basis of qualified self-inspection of construction enterprises; the bonding test data is not less than a certain number, such as 8-10, the average value of the test results is taken, if the average value exceeds 10% of the test data, the last effective number is not less than a specified number, such as not less than 5;
mounting the BFRP cloth 3 by the following two modes which are selected according to construction convenience:
a. horizontal installation: the width of the purchased BFRP cloth 3 meets the use requirement and reduces the joint as much as possible, the width of the BFRP cloth 3 meets the layer height and the lap joint length, if the lap joint length is 100mm (manually specified, not absolute), each layer of the installed BFRP cloth 3 can be horizontally wound and installed, the less the joint is, the better the joint is, the BFRP cloth 3 is horizontally unfolded and adhered and installed (a roll of BFRP cloth 3 can be inserted into a vertical rod of a movable base on a scaffold board, and the BFRP cloth 3 is discharged along with the rotation of the adhered BFRP cloth 3, so the joint is the least); the horizontal joint is positioned in the central line of the beam (including a ring beam) or the length of a support entering the beam is not less than a certain range, if the length of the support is not less than the range of 100mm, the horizontal joint is not positioned on a non-bearing wall between windows without columns, otherwise, the equal strength requirement after lap joint and pasting is required to be met, and the BFRP cloth 3 on the upper layer of the joint is pressed on the BFRP cloth 3 on the lower layer to be pasted;
b. vertical installation: the BFRP cloth 3 cut at one time is required to be as long as possible, so that the horizontal seams are reduced and the provisions of the horizontal seams are met; the vertical joint of the BFRP cloth 3 is preferably positioned at the window sill wall, the width of the BFRP cloth 3 in the door and window opening meets the adhering width of adhering the BFRP cloth 3 to the side edge of the door and window opening and the base layer wall, the BFRP cloth 3 is not suitable to be widened and adhered to the indoor base layer wall 1 at the side edge of the door and window opening, the joint is reduced as much as possible, otherwise, the strength requirements of lap joint adhesion and the like are met; the vertical joint of the BFRP cloth 3 is not suitable to be positioned in a small range on the window wall, such as within 200mm (specified by people, not absolutely), which is specified by the side edge of the door window opening; winding the BFRP cloth 3 on a plastic thick pipe, gradually putting down the BFRP cloth from top to bottom, vertically spreading the BFRP cloth 3, and sticking and installing the BFRP cloth 3; when cutting the BFRP cloth 3, coating emulsion on the edge of the BFRP cloth 3 to seal the BFRP cloth;
the specification of the BFRP cloth 3 which is horizontally or vertically installed comprises the width of sticking the BFRP cloth 3 to the side surface of a deformation joint;
fourthly, adhering BFRP cloth 3 on the whole area of the outer wall: coating an adhesive on the cement mortar protective layer 8-1, and rolling the BFRP cloth by using a scraper or a trowel, wherein the color of the BFRP cloth is deepened to indicate that the BFRP cloth is adhered, and if the BFRP cloth 3 can not meet the position with equal strength requirement after overlapping and adhering, the overlapping length of the joint of the BFRP cloth 3 is required to meet the specified length, for example, the overlapping length is 100mm (artificially specified and is not absolute);
after the BFRP cloth 3 is pasted on a cement mortar protective layer 8-1 of the front vertical surface of the outer wall, the BFRP cloth 3 is horizontally cut along the upper part and the lower part of a window, the vertical cutting position in a door and window opening is required to ensure the required width of the BFRP cloth 3 pasted on a base wall body 1 at the side edge of the window partition wall, the pasting width of the BFRP cloth 3 and the base wall body 1 at the side edge of the window partition wall is not less than a specified value, if not less than 150mm (artificially specified, not absolute), and the parallel tensile bearing capacity of the BFRP cloth 3 and the base wall body 1 in the pasting width is not less than the anti-shearing bearing capacity required by the structural design, and certain safety reserve is required, if 2 times, is determined by expert council; if the bonding width between the BFRP cloth 3 and the base wall body is not satisfied, or the BFRP cloth 3 is bonded by a fiber-impregnated epoxy resin adhesive for a certain width (the parallel tensile strength of the BFRP cloth bonded by the fiber-impregnated epoxy resin adhesive is determined by advanced tests); or when the single-layer BFRP cloth 3 is installed and does not meet the shearing resistance bearing capacity of the structural requirement, the number of layers of the adhered BFRP cloth 3 is increased, the adhering range and the bearing capacity of the adhered BFRP cloth 3 are increased to meet the design regulation, and certain safety reserve is required, such as 2 times; cutting BFRP cloth 3, sticking it on the inner side of door and window, and sticking it on the BFRP cloth 3 mounted on the outer side of door and window, then mounting door and window, etc.
After the BFRP cloth 3 is pasted and installed on the outer wall, screws penetrate through the connecting iron piece 15-1, the BFRP cloth 3 and the fireproof heat-insulating material 7, and the connecting iron piece 15-1 for installing the outer wall attachment is fixed with the embedded steel plate 4, such as installing window anti-theft fences, air conditioner supporting plates, deformation joint cover plates, installing hanging pieces for outer wall maintenance, or installing vertical greening outer wall attachments and the like.
The embodiment is suitable for being decorated by paint or facing bricks, and is suitable for being decorated by installing the curtain wall decorating plate by adopting the first embodiment.
The third embodiment is as follows: according to the energy-saving heat-insulating wall and the roof, the energy-saving heat-insulating wall or the roof is a prefabricating method for producing and processing a precast concrete sandwich plate or a precast concrete outer heat-insulating plate by using a low-strength and low-price material as a side formwork batten; the prefabricated concrete sandwich panel comprises a prefabricated concrete sandwich wallboard and a prefabricated concrete sandwich roof panel, the prefabricated concrete sandwich wallboard is used for installing an assembled sandwich concrete shear wall, or a non-bearing assembled sandwich wall body of an installation framework structure, or an indoor separated heating partition wall, and the prefabricated concrete sandwich roof panel is used for installing an assembled sandwich roof; the non-bearing assembly type sandwich wall and the assembly type sandwich roof are bending components, and the partition wall can be regarded as a non-stressed component; precast concrete external insulation board for mounting external insulation boardAn external thermal insulation non-bearing wall body of a warm concrete shear wall or an installation frame structure; the precast concrete sandwich panel consists of inner leaf concrete 1, a heat insulation layer 2, outer leaf concrete 8-3 or a roof concrete protective layer 8-2, and is shown in fig. 5 and fig. 6; the precast concrete outer insulation board consists of inner leaf concrete 1, an insulation layer 2 and an outer protection layer 8-1, wherein the outer protection layer 8-1 is a cement mortar protection layer meeting a certain thickness or a thinner fine stone concrete protection layer, and if the thickness is not less than 15mm, the thickness meets the requirement of fire spread prevention; the inner leaf concrete and the outer leaf concrete of the precast concrete sandwich thermal insulation wallboard for the flexural member are common concrete (available, but not recommended) or lightweight aggregate concrete (recommended, light weight and good thermal insulation, such as pumice and ceramsite as lightweight aggregate), the inner leaf concrete and the outer leaf concrete of the precast concrete sandwich thermal insulation wallboard for the partition wall are lightweight aggregate concrete or foam concrete, and the lightweight aggregate can be ceramsite; when the heat-insulating layer 2 of the precast concrete sandwich panel or the precast concrete outer heat-insulating plate for the outer wall and the roof is an EPS (expandable polystyrene) plate or the heat-insulating layer 2 adopts a hard foam heat-insulating plate, the test proves that the heat-insulating layer has the capability of adapting to deformation in long-term use, the bonding interface is not damaged, and the durability meets the requirement; the heat-insulating layer 2 of the precast concrete sandwich board for the indoor separating heating partition wall is an EPS board or a hard foam heat-insulating board such as an XPS board, and the hard foam XPS board can be used because the temperature difference change of the partition wall for the indoor separating heating in winter and summer is small and no wind load horizontal thrust exists; the production and processing of the precast concrete sandwich panel or the production and processing of the precast concrete outer insulation board are performed by taking a low-strength low-price material 11 (such as an EPS (expanded polystyrene) plate strip) as a precast side formwork strip instead of a steel plate or an aluminum plate, and adhering the side formwork strip 11 to a platform by using an adhesive (the platform of an assembly type industrial base is a movable steel platform, and concrete or cement ground can be used as a simple precast platform without any conditions) as the precast concrete sandwich panel or the precast concrete outer insulation board edge of the ring edge (including the edge formwork strip of the door and window opening edge); when the precast concrete sandwich board or the precast concrete outer insulation board is produced and processed, the inner leaf concrete 1, the organic insulation layer 2 and the outer leaf concrete 8-3 or the roof concrete protective layer are mixed by adhesive8-2 or the external protective layer 8-1 are bonded into a whole, and fiber reinforced plastic pulling-connecting pieces or stainless steel pulling-connecting pieces do not need to be installed for connection, and naturally pulling-connecting pieces are willing to be installed but the cost is increased due to trouble; the embodiment is not available in the existing prefabrication technology, the side formwork strips of a steel plate or an aluminum plate are fixed on a steel platform by welding or bolts at present, or the steel formwork strips are sucked and fixed by expensive high-magnetism magnet stones, and as the external wall plates have more specifications and more door and window specifications, the turnover and repeated utilization rate of the side formwork strips of the steel plate or the aluminum plate is low, the consumption of the side formwork strips is extremely high, the installation of the side formwork strips is troublesome, more labor is used, the steel platform is damaged by welding or bolt fixing, and the cost of the prefabricated part is greatly increased; the EPS lath is used as the side template lath, the price is low, the sticking and the fixation are simple, the EPS lath can be taken off from the steel plate along the adhesive bonding surface by using a hemp thread cutter when the side template lath is detached and cleaned, and the steel platform is cleaned up without damaging the steel platform. The width of an EPS plate edge template strip is about 50-100 mm, the EPS plate edge template strip is adhered with an adhesive which is not high in strength after being cured and used with a prefabricated platform, the prefabricated component can be broken and opened on the side surface by a hemp knife when being moved open, if the EPS plate edge template strip is adhered with acrylic ester copolymerization type emulsion raw stock, an edge template strip can be used as a packaging material to be adhered and connected with concrete of the prefabricated component (a little adhesive is coated on the EPS plate edge template strip during prefabrication, the EPS plate edge template strip is adhered with poured concrete), after prefabrication is finished, the EPS plate edge template strip and the edge of the prefabricated component can be wrapped and adhered by woven packaging cloth to be protected until a prefabricated concrete sandwich plate or a prefabricated concrete external insulation board is installed, namely the edge template strip is also a protection material of the edge of the prefabricated component, and the cost for installing the edge template2The current installation of metal side form strip requires 150-200 yuan/m2The reason is that steel and cement are known to building industry, and other ideas are too few or not available. The foam concrete sandwich board can be prefabricated on a platform and can also be prefabricated by a box type vertical mold (the prefabrication cost of the box type vertical mold is low). The frame structure is installed the non-bearing assembled sandwich insulation wall or is installed the non-bearing precast concrete outer insulation board and is split and adopt following two kinds to be suitable: the split joints being on the sill wall or on the sides of the door or window opening, both being secured in contrast to the split in the middle of the wall between the windowsThe workload of seam installation is small;
the prefabrication processing method for producing and processing the precast concrete sandwich panel or the precast concrete outer insulation board comprises the following steps:
1) the material quality is required to meet the general regulations of the building industry, for example, the material quality is required to meet the relevant regulations of national standards and industrial standards, and the prefabricated enterprises are required to have fireproof measures and the like; when the inner leaf concrete is the fabricated concrete shear wall, the installation should meet the regulations of 'fabricated concrete structure technical regulations' JGJ1, and the non-bearing sandwich precast slab is installed on the outer side of the frame structure and the structure should meet the corresponding technical regulations according to the type of the designed wall; the layered structure, the concrete strength grade, the steel bar installation, the appearance quality and the like of the precast concrete sandwich panel and the precast concrete outer insulation board meet the regulations of related technical standards and designs, and a quality certification system is implemented; determining inner reinforcement bars of inner and outer leaf concrete of the precast concrete sandwich panel according to the internal force analysis result, and controlling the deflection within an allowable range; the materials are stored, protected, stored, packaged and transported to meet corresponding regulations, a layering bonding test is carried out in advance, the tensile strength is not less than the industrial standard regulations, a specially-assigned person is responsible for preparing an adhesive, the preparation of the adhesive and the preparation of concrete or cement mortar are preferably controlled by a computer automatically, the mixing ratio is accurate, a test piece is reserved on concrete poured in each batch, a project detected by a legal unit is required to be detected on the basis of qualified self-detection of a construction enterprise, serial technical data such as specifications, reinforcing bars, strength grades, appearance quality, detection reports, hidden engineering records and the like of a precast concrete sandwich plate and a precast concrete external insulation plate are provided, and the enterprise is required to provide a precast member self-detection report and a necessary type inspection report when leaving a factory;
2) the method comprises the following steps of deeply designing a precast concrete sandwich panel and a precast concrete outer insulation board according to design requirements, determining the split lattices of the precast concrete sandwich panel and the precast concrete outer insulation board, compiling a component processing diagram (including a reinforcement diagram, if the split construction is suitable for installing 45-degree oblique reinforcements in inner leaf concrete and outer leaf concrete at corners of door and window openings on a window sill wall), enabling an organic insulation layer 2 in the precast concrete sandwich panel or the precast concrete outer insulation board to protrude a certain width at vertical joints of walls and adjacent joints (non-support joints) of roofs to be larger than the outer sides of the inner leaf concrete and the outer leaf concrete, connecting the organic insulation layer 2 at the joints when the organic insulation layer 2 is installed, and determining the protruding width of the organic insulation layer 2 according to the width of cast-in-place concrete at the joints; marking windows on drawings of a precast concrete sandwich panel and a precast concrete outer insulation board of an outer wall, installing a non-combustible insulation material 9 such as a vertical-wire rock wool board, and marking the embedded positions and specifications of an embedded steel plate 4 and an embedded hoisting piece; the embedded steel plate 4 is provided with a window outdoor corner L-shaped embedded steel plate 4-1 and embedded steel plates 4-2 installed at other positions of the outer wall, when a near-zero energy consumption building is built, the length of the L-shaped embedded steel plate 4-1 on the side surface of the window is not suitable for extending into the window frame or the L-shaped embedded steel plate 4-1 with a smaller length enters the window frame, and the length of the L-shaped embedded steel plate 4-1 of the precast concrete sandwich panel on the side surface of the window is preferably the same as the thickness of the outer leaf concrete (the embedded position of the L-shaped embedded steel plate 4-1 is installed according to the second implementation mode when the; when the window is installed, the inside and the outside are connected in a staggered mode, the connecting iron piece 15 of the window is fixed with the indoor base layer wall body 1, or the indoor window is provided with the embedded steel plate 4-3 (when the heat insulation layer is thick), the connecting iron piece 15 of the installation window is connected with the indoor embedded steel plate 4-3, and the indoor embedded steel plate 4-3 of the low-energy-consumption building and the outdoor L-shaped embedded steel plate 4-1 are not required to be connected; the specification of the L-shaped embedded steel plate is 4-1, so that the requirement of convenience in construction for installing attachments on the periphery of the window is met; the L-shaped embedded steel plate 4-1 is adhered to the non-combustible heat-insulation material 9 on the window side and is anchored with the outer leaf concrete 8-3, the embedded steel plates 4-2 arranged at the rest positions of the outer wall are anchored with the outer leaf concrete 8-3, or the embedded steel plates 4-2 arranged at the rest positions of the outer wall are adhered to the EPS plate of the precast concrete outer heat-insulation plate by using an adhesive; or when the concrete outer insulation board is prefabricated, the embedded steel plates 4-2 arranged at the rest positions of the outer wall are adhered to the EPS boards by using an adhesive; or after the precast concrete sandwich panel and the precast concrete outer insulation board are cured, adhering the L-shaped embedded steel plate 4-1 to the EPS boards in the window non-combustible insulation material 9 and the outer protection layer 8-1 by using an adhesive; the outer surface of the embedded steel plate 4 is flush with 8-3 of the outer leaf concrete, as shown in figure 5, or the outer surface of the embedded steel plate 4 is flush with the EPS plate of the precast concrete outer insulation board, as shown in figure 2; the L-shaped embedded steel plate 4-1 is preferably a hot-dip galvanized steel plate with the thickness of 1.5-2 mm, the embedded steel plates 4-2 at the rest positions of the outer wall are preferably cold-galvanized steel plates with the thickness of not less than 4mm (the embedded steel plates are thicker and better in corrosion resistance), and effective corrosion resistance measures are taken for the embedded steel plates 4 to ensure that the durability is not less than 50 years;
3) the test needs to be carried out on each layer by layer bonding and the mounting of the embedded steel plates on the EPS plate, and the loading test is carried out on the precast concrete sandwich plate of the outer wall or the roof according to the simple support plate:
firstly, carrying out a bonding test on cast-in-place concrete and an EPS board, wherein the damage is to be on the EPS board rather than a bonding interface;
sticking the pre-buried steel plate 4 to the EPS plate by using an adhesive in advance to perform a bonding test, and performing a bonding test with a window non-combustible heat-insulating material such as a vertical-filament rock wool plate so as to damage the non-combustible heat-insulating material on the EPS plate and the non-combustible heat-insulating material, but not to pass the bonding interface;
thirdly, on the basis of qualified bonding in the test, the normal section bending test and the oblique section shearing resistance test are carried out on the precast concrete sandwich boards of the non-bearing outer walls or roofs with different spans (such as 3.3m, 3.9m, 4.5m, 5.1m and 6m) and different section heights (such as 200mm, 250mm, 300mm, 350mm and 400mm) according to the simple support plates, and the detection number of the precast components is in accordance with the specification; this is because the enterprise never prefabricates the flexural member of the precast concrete sandwich panel which is bonded layer by layer, and needs to perform the test; the thickness of the EPS board and the total thickness of the member are determined according to the combined value of different horizontal loads in different climatic regions during testing, for example, the prefabricated concrete sandwich board for external mounting is used, when inner and outer leaf lightweight aggregate concrete is bonded layer by layer, the thickness of the inner leaf is 50mm or the thickness of the inner leaf is 60mm, and the thickness of the outer leaf is 40mm, so that the thickness requirement and the fire endurance requirement of a bending stressed layer of a flexural member can be met, and on the premise that the thickness of the inner leaf concrete and the thickness of the outer leaf concrete meet the fire endurance, the section height of the prefabricated concrete sandwich board is changed by changing the thickness of the EPS board, and the rigidity and;detected byThe stress performance of the member is in accordance with the theory of mechanics and concrete structures, if the stress performance of the member is not in accordance with the theory of layered bonding, whether the layered bonding has problems or not is checked (if the materials of each layer are not bonded well in a layered manner, the members can not bear force together, and the rigidity of the member is greatly reduced, so that the deflection is large); the data of load, deflection and crack applied each time are recorded until the tests such as destruction and the like are carried outData, the regulation of crack control level needs to be met, data such as video and the like are appropriate, the load when the deflection of the non-bearing external wall panel reaches 1/250 is recorded, the load when the deflection of the precast concrete sandwich roof panel reaches the allowable deflection limit value (the allowable deflection of the roof panel is different when different spans are achieved) is recorded, a component selection form is made for design and selection, so that the section rigidity is increased by increasing the section height when the design requirement is not met, the detection is carried out by legal units on the basis of the self-detection of a precast enterprise, and the item is appropriate as a type detection item; when the nonbearing flexural wallboard is installed, if the basalt fiber gridding cloth needs to be installed on the inner leaf concrete for crack prevention, the basalt fiber gridding cloth can be installed on the outer side of the reinforcing mesh in the inner leaf concrete, and the side length of meshes of the basalt fiber gridding cloth is preferably 10-20 mm;
above precast concrete battenboard or precast concrete outer insulation board if do not install BFRP cloth and directly can regard as assembled side fascia installation, but can not leave the window and install the outer corner position of nearly window leaf concrete, the peripheral thermal bridge of window can not eliminate, reach the EPS board that the standard of building nearly zero energy consumption building needs to be installed very thick, the non-bearing wall door and window mouth safety of frame construction installation still can not be guaranteed, possible window corner fracture or even destroy completely occasionally in strong wind and earthquake, the prefabricated component seam is easy to split, the seam is the thermal bridge, seam seal is waterproof not good.
4) Further, a high-strength durable fiber cloth 3 is added, wherein the high-strength durable fiber cloth 3 is basalt fiber cloth 3, which is called BFRP cloth 3 for short, or other fiber cloth capable of replacing the BFRP cloth; when the outer leaf concrete 8-3 used for installing the outer wall or the BFRP cloth 3 is pasted on the surface of the outer protection layer 8-1 of the precast concrete outer insulation board, the pasting test of the BFRP cloth 3 needs to be carried out in advance:
firstly, carrying out a bonding test of BFRP cloth and concrete, sticking a BFRP cloth strip with a certain width (such as 100mm) and the concrete by using an adhesive for a certain length (such as 100mm), wherein the color of the BFRP cloth is deepened to explain that the BFRP cloth is stuck on the whole area, and carrying out parallel tensile strength detection after curing; the bonding test data is not less than a certain number such as 8-10, the average value of the test result is taken, if the number exceeds 10% of the test data, the last effective number is not less than a specified number such as not less than 5; thereby determining the width of the BFRP cloth required to be adhered to the base wall when the door and window meet the shearing resistance bearing capacity required by the design; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; if the design value of the tensile strength of the BFRP cloth does not meet the requirement of the shearing resistance bearing capacity, the number of the adhered BFRP cloth layers should be increased, certain safety reserve should be provided, and the adhering range should meet the design regulation;
performing a mutual adhesion test of BFRP (bidirectional Forwarding resistance) cloth, mutually adhering BFRP cloth strips with a certain width (such as 100mm) with a certain length (such as 100mm), wherein the color of the BFRP cloth is deepened to explain that the BFRP cloth is adhered in the whole area, performing parallel tensile strength detection after health maintenance to determine the parallel tensile strength of mutual lap joint adhesion between the BFRP cloth strips, thereby determining the lap joint adhesion width required by the BFRP cloth meeting the strength requirements of lap joint adhesion and the like, and delivering to legal unit detection on the basis of qualified self-inspection of construction enterprises; the test data is not less than a certain number, such as 8-10, the average value of the test result is taken, if the test data exceeds 10% of the test data, the last effective number is not less than a specified number, such as not less than 5; the test result, the used adhesive and the mixing ratio are provided for a construction installation unit, otherwise, the construction installation unit needs to perform the two tests again before the BFRP cloth is stuck and installed on the inner leaf concrete of the door and window opening, and the test result is influenced by different adhesives and mixing ratios;
5) when the concrete sandwich board or the outer insulation board of the precast concrete is precast, the paving sequence of each layer of materials on the precast platform from bottom to top is different according to the equipment conditions of a precast workshop and is conveniently determined according to the prefabrication;
6) preparing an organic heat-insulating plate 2 and an embedded steel plate 4 which meet the design requirements in advance;
firstly, the specification of the organic heat-insulating plate 2 is determined according to the requirements of step-shaped lap joint pasting or gluing at the vertical seam of a wall body or the seam of a roof panel, the flatness is determined according to the requirements, the seams of the EPS plates of an outer wall and a roof are reduced as much as possible (the cured large-size organic heat-insulating plate is easy to warp and is not possible), the seams of the EPS plates are reduced as much as possible, and the EPS plates do not have the seams in the length direction of a wall between non-bearing outer wall windows and the main stress direction of the roof panel (the EPS plates can reach 6m at most, so that the method is easy to, if the joint is connected by adopting a step-type lap joint coating adhesive or is fixed by adopting a plastic bolt (recommended to be adopted), or brushing or scraping the adhesive on the plane to adhere the EPS board joints into a whole (for example, the sand-added epoxy resin adhesive is convenient to butt joint and adhere, but is not suitable for being adopted in areas with heat bridges and heating), and reliable adhesion is ensured; the EPS boards of the precast concrete sandwich board protrude outside the edges of the inner and outer leaf concrete boards at the joints of the adjacent boards by a certain length (for example, the non-bearing sandwich wallboard and the precast concrete sandwich roof board protrude by about 50mm, the joints of the precast concrete sandwich shear wallboard need to be determined according to the width required by the design on the joints of the shear wall, namely the widths of the inner and outer leaf concrete of the precast concrete sandwich board can be different, and the joints of the precast shear wall concrete are wider), the joints of the EPS boards can be in a step shape, and are used for lap joint adhesion when the precast concrete sandwich board is installed on a main body structure, or can be used for brushing or scraping an adhesive to mutually squeeze and adhere when the precast concrete sandwich board is installed on a plane; except that the side surfaces of seams of EPS boards in the prefabricated concrete sandwich roof board are mutually bonded (if a seam is inserted into an EPS board thin strip, the two sides of the EPS board thin strip are coated with an adhesive and are bonded), the seam at the upper part of the seam of the EPS board is coated with a waterproof sealing material for two times for waterproof sealing, and the seam is coated with a waterproof sealing material for 2 times after being dried for 1 time, so that the waterproof sealing reliability of the seam is ensured; when the concrete sandwich board is prefabricated, anchoring an L-shaped embedded steel plate 4-1 and the rest embedded steel plates 4-2 of the outer wall with outer leaf concrete 8-3, wherein the L-shaped embedded steel plate 4-1 is also bonded with a door window side surface non-combustible heat insulation material 9, and the outer surface of the embedded steel plate 4 is flat with the outer leaf concrete 8-3; when the concrete outer insulation board is prefabricated, firstly, an L-shaped embedded steel plate 4-1 and the rest embedded steel plates 4-2 of the outer wall are bonded with the EPS board by using an adhesive, and are bonded with the incombustible insulation material 9 on the side surface of the door window, the EPS board is placed on a platform to be used for producing and processing the prefabricated concrete outer insulation board after the adhesive bonded with the embedded steel plates 4 is stable, or the corner L-shaped embedded steel plate 4-1 and the window incombustible insulation material 9 are bonded with the surface of the EPS board in the outer protective layer 8-1 by using the adhesive after the prefabricated concrete outer insulation board is cured, and the outer surface of the embedded steel plate 4 is flat with the EPS board in the outer protective layer 8-1;
the EPS boards installed in the precast concrete sandwich board of the roof of the embodiment and the EPS boards installed on the concrete of the roof of the embodiment have the same points of heat preservation and water resistance, but have different points: when the precast concrete sandwich panel is used as a roof panel and an external wall panel of a frame structure, the EPS panel is a part of a bent member to participate in stress, so the side surfaces of the mutually connected joints of the EPS panel are bonded into a whole, otherwise the precast concrete sandwich panel can be broken and damaged at the joints; if the inner leaf concrete of the roof can meet the bearing capacity, the inner leaf concrete is the same as the roof of the second embodiment, the side faces of the joint of the EPS boards are not necessarily adhered, but the upper part of the joint is sealed in a waterproof mode. The prefabricated concrete sandwich roof panel installed in an assembly mode only uses inner leaf concrete to meet the bending resistance and bearing capacity, and is uneconomical because the bearing performance of the EPS panel cannot be exerted, the bending resistance height of the prefabricated concrete sandwich roof panel is only the height of the inner leaf concrete, the steel consumption is large, the bending rigidity is small, the deflection is large, if the EPS panel is bonded with upper and lower concrete into a whole, the EPS panel becomes a part of a bearing component to participate in bearing, the bending resistance height is the whole prefabricated concrete sandwich roof panel, the bending rigidity is large, the deformation is small, the shearing resistance and bearing capacity are large, the steel consumption is small, and 'conglomeration is embodied as the force'; therefore, it is important to bond the side surfaces of the EPS board seams into a whole;
secondly, forming holes in the EPS boards at certain intervals, wherein the intervals are about 500mm, and the diameters of the holes are about 10-15 mm; the thin-wall stainless steel pipe can be cut into inclined plane for drilling; the holes are formed to avoid that gaps are formed between the EPS boards and the concrete poured on the upper part so that the EPS boards cannot be bonded with the poured concrete; otherwise, concrete needs to be poured on the EPS boards firstly, the EPS boards are turned over after being bonded with the poured concrete, and then concrete is poured on the other side of the EPS boards, which is troublesome;
7) adhering and mounting a side formwork batten made of low-strength and cheap materials on the prefabricated platform, and checking whether the dimension error of the prefabricated part is controlled within an allowable range if the side formwork batten is an EPS batten;
8) installing a reinforcing mesh and an embedded steel plate 4 or an embedded hoisting piece in the side formwork lath, inserting the external reinforcing steel bar at the joint into the side formwork lath for being mutually connected when in construction site installation, welding and anchoring the embedded steel plate 4 or the embedded hoisting piece and the concrete internal reinforcing mesh of the outer leaf or/and the inner leaf, or bonding and fixing the embedded steel plate 4 and the EPS plate;
9) pouring outer leaf concrete 8-2 or an outer protective layer 8-1 or pouring inner leaf concrete 1, vibrating and leveling the poured concrete or cement mortar (the automatic platform has a vibrating function to compact and level the concrete, and a vibrator is held by hand on the simple platform to vibrate and scrape the concrete with a scraper), so that the thickness of the design requirement is met;
10) coating an adhesive on the prepared EPS board in the whole area, wherein an adhesive coating is full and should not be leaked or saturated, placing the EPS board which is perforated with holes and coated with the adhesive on leveling concrete or an outer protective layer, placing the EPS board accurately, rolling the EPS board when the adhesive is wet, bonding the EPS board with the concrete below, and filling EPS strips or other heat preservation strips at the positions where the EPS board is provided with holes;
11) coating an adhesive on the upper surface of the EPS board in a full area, wherein the adhesive coating is full and should not be leaked, laying a steel bar mesh on the EPS board, installing an embedded steel plate 4 or an embedded hoisting piece (the embedded steel plate 4 is welded with the steel bar mesh), or fixedly bonding the embedded steel plate 4 with the EPS board, pouring inner leaf or outer leaf concrete or an outer protective layer when the adhesive is wet, and vibrating and flattening;
12) steam curing or natural curing is carried out on the precast concrete sandwich board or the precast concrete outer insulation board, and whether plastic films are paved on the exposed concrete surface for water preservation and curing or watering curing is carried out is determined according to requirements;
13) and (3) carrying out spot check or comprehensive check on the layering bonding reliability according to the following method, and selecting according to the requirement:
firstly, a precast concrete sandwich panel is lifted to a certain height (such as 1m or 2m) by using a vertical steel bar or an embedded lifting piece at a lifting point at a certain height, and the precast concrete sandwich panel shakes and falls suddenly without falling, deformation and damage;
secondly, local drilling is carried out, whether each layer is bonded or not is checked through an endoscope, then the EPS board is plugged, and two sides are coated with adhesive and plastered for plugging;
and thirdly, sampling and checking the non-bearing precast concrete sandwich plates or the outer precast concrete insulation plates which exceed a certain number, loading according to the simple support plates, and if the deformation does not exceed an allowable value when the load reaches a design standard value, the deformation of the precast member meets the requirement, otherwise, the precast member is reprocessed for checking reasons.
The outer wall engineering needs to increase BFRP cloth 3, the BFRP cloth 3 is also pasted and installed on outer leaf concrete 8-3 of a precast concrete sandwich board of the outer wall or an outer protective layer 8-1 of a precast concrete outer insulation board, and the method for pasting and installing the BFRP cloth 3 comprises the following steps:
1) the curing of the precast concrete sandwich board or the precast concrete outer insulation board is completed, and the BFRP cloth 3 is pasted and installed on the surface of the outer leaf concrete 8-3 or the outer protective layer 8-1 when the surface is dry (when the surface is wet, a polymer prepared by a water-soluble adhesive for pasting the BFRP cloth is slow in drying, the bonding speed is influenced, but the absolute drying of the outer leaf concrete 8-3 or the outer protective layer 8-1 is not needed);
2) checking and accepting the position and specification of the embedded steel plate 4 arranged on the outer leaf concrete 8-3 or the outer protective layer 8-1, if the position and specification of the embedded steel plate are corrected by mistake, and adhering a fireproof heat-insulating material 7 on the embedded steel plate 4 adhered on the precast concrete outer heat-insulating plate, if the fireproof heat-insulating material 7 is a ceramic fiber plate;
3) the method for sticking and installing the BFRP cloth 3 on the outer leaf concrete 8-3 or the outer protective layer 8-1 comprises the following steps:
mounting BFRP cloth 3 in a sticking way: the width and the length of the BFRP cloth 3 which is stuck and installed should meet the length of mutual lap joint when each precast concrete sandwich panel or precast concrete outer insulation board is installed, and also meet the regulation of designing and installing the joint position of the BFRP cloth 3; the width and the length of the BFRP cloth comprise the sticking length of the BFRP cloth on a window sill wall and on a side wall of a window wall to the inner leaf concrete 1, and comprise a part stuck to the side surface of a deformation joint, and the upper length and the lower length of the BFRP cloth 3 on a precast concrete sandwich panel or a precast concrete outer heat-insulation board are determined according to the design of a horizontal joint structure of the precast heat-insulation board on the outer wall; the BFRP cloth 3 installed on one external wall prefabricated heat-insulation board is free of seams as much as possible, otherwise, the connection is troublesome; when cutting the BFRP cloth 3, coating emulsion on the edge of the BFRP cloth 3 and sealing the edge;
secondly, locally sticking and installing BFRP cloth 3 (locally sticking and installing BFRP cloth 3 is not suitable for sticking on an outer protective layer 8-1 of the precast concrete outer insulation board because the outer protective layer 8-1 is easy to crack and the outer protective layer 8-1 is shrunk by heating the EPS board when fire breaks down): the BFRP cloth 3 is pasted and installed on the outer vertical surface of the side wall of the window wall and is not less than a certain width, such as not less than 200mm, the pasting length from the BFRP cloth 3 to the side wall of the window wall until the inner leaf concrete 1 is reserved, the BFRP cloth 3 is also pasted and installed on the edge of the joint of the precast concrete sandwich panel or the precast concrete outer insulation board, and a certain joint lapping and pasting length is reserved; the key point of the local sticking and mounting of the BFRP cloth is that the BFRP cloth is stuck at the side surface of a door and window opening and the joint of a precast concrete sandwich plate or a precast concrete outer insulation board, so that the BFRP cloth can be saved; if the prefabricated concrete sandwich panel is locally adhered and installed with the BFRP cloth, the BFRP cloth is more saved by adhering and installing the BFRP cloth by taking the door and window opening as the center than by adhering and installing the BFRP cloth when prefabricating after the prefabricated concrete sandwich panel is installed on a construction site, and the BFRP cloth is adhered to the joint of the adjacent prefabricated concrete sandwich panel, so that the installation amount of the BFRP cloth at the joint is less; when the BFRP cloth is locally adhered and installed, the BFRP cloth can not become a steel hoop along the periphery of a building and needs to be determined by structural design according to the requirements of relevant regulations of earthquake fortification;
thirdly, the BFRP cloth is pasted and installed on the construction site according to the first or second embodiment, so that the joint of the BFRP cloth can be reduced, and the workload of high-altitude operation on the site is increased; the BFRP cloth can be pasted on the whole area of a construction site or locally; mounting a precast concrete sandwich panel or a precast concrete outer insulation board on a main body structure to be fixed, connecting EPS boards at the joint, connecting inner and outer steel bars of the EPS boards, and pasting BFRP cloth in inner and outer leaf concrete and after pouring and culturing;
fourthly, the sticking width of the BFRP cloth 3 and the tensile bearing capacity of the BFRP cloth which are pre-installed on the side wall of the partition wall need to meet the requirement of the shearing resistance bearing capacity of the BFRP cloth, if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of layers of the stuck BFRP cloth needs to be increased, the sticking range needs to meet the design regulation, and certain safety reserve needs to be provided;
coating or scraping the adhesive on the pasting part to paste the BFRP cloth 3, rolling the BFRP cloth by using a scraping plate or a trowel, wherein the color of the BFRP cloth is deepened to explain that the BFRP cloth is pasted on the whole area;
sixthly, after the prefabricated concrete sandwich board or the prefabricated outer heat-insulation board is installed to form an assembled sandwich wall body or the assembled concrete wall outer heat-insulation wall body is installed in place and fixed, the BFRP cloth 3 is horizontally cut along the upper part and the lower part of a window on a construction site, the BFRP cloth 3 is adhered to the indoor non-combustible heat-insulation material 9 at the side edge of the wall between the windows and is adhered to the inner leaf concrete 1, and the adhering width of the BFRP cloth 3 and the inner leaf concrete 1 meets the design regulation; or the BFRP cloth 3 is completely or partially stuck on the construction site, and then the BFRP cloth 3 is horizontally cut along the upper part and the lower part of the window and stuck on the side wall of the window;
seventhly, adhering BFRP cloth to the EPS lath, taking the EPS lath adhered with the BFRP cloth as a window plate of a prefabricated EPS plate of an outdoor manned window sill and decorating lines of the prefabricated EPS plates on four sides of a door and window opening, adhering the window plate of the prefabricated EPS plate and the decorating lines of the prefabricated EPS plates to the BFRP cloth on the side edge of the front vertical surface of the door and window opening, and fixing the window plate and the prefabricated EPS decorating lines with the embedded L-shaped steel plates on the periphery of the window by adding screws; BFRP cloth on the upper part of the prefabricated EPS board windowsill plate is extended and adhered to an indoor windowsill, and the requirement of tensile bearing capacity of upper tension steel bars serving as outdoor windowsills is met; other embodiments of the invention can also install the prefabricated EPS board window board and the prefabricated EPS board decorative line according to the embodiment, belong to equivalent substitution, and are all in the protection scope of the invention;
eighthly, after the window is installed, coating adhesive on BFRP cloth stuck to the side edge of the indoor window, and then coating thermal insulation mortar 16 or other non-combustible thermal insulation materials.
Further, the construction and installation method for installing the precast concrete sandwich panel or the precast concrete outer insulation board into the assembled sandwich wall body or the assembled concrete outer insulation wall body is as follows:
according to relevant regulations of building industry and design, a prefabricated concrete sandwich board or a prefabricated external insulation board is installed into an assembled sandwich wall body or is installed into an assembled concrete external insulation wall body or is installed into an assembled roof to be fixed in place, the EPS boards at the joint are firstly bonded in a step-type lap joint mode or are further fixed by plastic bolts and gaskets or are bonded in a plane-to-plane mode according to the coating adhesive, then the assembled sandwich wall body or the assembled concrete external insulation wall body or is installed into the assembled roof, after the EPS boards at the joint are connected, the inner leaf concrete or the outer protective layer at the joint are connected, and the construction method comprises the following steps:
1) and (3) outer wall joint connection: connecting horizontal steel bars at the joint of the outer leaf concrete (preferably welding), coating an adhesive on the outer side of the EPS boards at the joint and coating the adhesive on the outer leaf concrete at the side edges, and bonding and connecting BFRP (bidirectional forwarding protocol) cloth at the joint after the joint concrete is cultured along with pouring or scraping and filling the outer leaf concrete (preferably light aggregate concrete) at the joint along with the coating of the adhesive; connecting reinforcing steel bars to be connected at the joints of the inner leaf concrete 1 according to related fixing, wherein the width of the joints is large when the inner leaf concrete 1 is a load-bearing shear wall, not only horizontal reinforcing steel bars need to be connected, but also vertical reinforcing steel bars need to be connected by a sleeve, but the width of the joints between non-load-bearing sandwich concrete wallboards does not need to be large, and can be the same as the width of the joints between the outer leaf concrete 8-3, the outer leaf concrete 8-3 is set for fire prevention, and the width between adjacent outer leaf concrete can meet the requirement of connecting the joint reinforcing steel bars and filling the concrete, for example, 50-100 mm, namely the widths of the inner leaf concrete and the outer leaf concrete can be different; connecting the steel bars to be installed and connected at the joint of the inner leaf concrete 1 according to related fixation, coating an adhesive on the inner side of the EPS boards, coating the adhesive on the side edges of the inner leaf concrete on two sides, and filling the inner leaf concrete along with pouring or scraping along with the coating of the adhesive;
2) roof seam connection: connecting steel bars (preferably welding) at the joint of the inner leaf concrete below the roof, coating an adhesive below the EPS boards at the joint, coating the adhesive on the inner leaf concrete on the side edges, and scraping the inner leaf concrete at the joint along with the filling along with the coating of the adhesive; connecting reinforcing steel bars (preferably welding) which need to be connected at the outer leaf concrete joint on the roof, coating an adhesive on the EPS boards at the joint, coating the adhesive on the side edges of the outer leaf concrete on the two sides, and pouring and vibrating the outer leaf concrete at the roof gap along with the coating of the adhesive;
and (3) coating the concrete at the joint for curing or adding water for curing, adhering BFRP cloth at the joint after curing the outer leaf concrete at the joint of the outer wall, and preferably, the concrete at the joint of the inner leaf and the outer leaf is micro-expansive concrete.
The fireproof grade of the wall body installed by the precast concrete sandwich panel meets the highest-grade fireproof requirement, and the embedded steel plates are installed on the outer leaf concrete 8-3, so that the outer wall attachments are simply installed; this embodiment satisfies medium-grade fire protection requirement with the wall body fire rating of precast concrete external insulation board installation, and installation outer wall attachment structure is the same with embodiment two, and the fire prevention structure adopts: the structure that the connecting iron piece 15-1 for installing the outer wall attachment and the fireproof heat-insulating material 7 are additionally arranged, the connecting iron piece 15-1 for installing the outer wall attachment and the embedded steel plate 4 are fixedly installed by penetrating the connecting iron piece 15-1, the fireproof heat-insulating material 7 and the BFRP cloth through screws belongs to equivalent replacement and is within the protection scope of the invention.
The construction and installation method for installing the precast concrete sandwich panel (preferably the low-grade ceramsite concrete sandwich panel) into the indoor partition heating partition wall comprises the following steps:
1) vertical steel bars or iron pieces at two sides of the precast concrete sandwich panel are fixed with the concrete floor, or/and an adhesive is spotted on the upper surface and the lower surface of the organic heat-insulating layer 2 to be bonded with the floor concrete, because the using amount of the adhesive is small, the use of epoxy resin adhesive (sand can be added) or the use of other adhesives such as polyurethane and the like is more convenient than the use of cement polymer mortar;
2) during prefabrication, in the length direction of the precast concrete sandwich plate, the concrete plates on the two sides of the organic heat-insulating layer 2 can be retracted by a certain length, such as 10-30 mm (namely the concrete plates on the two sides are slightly shorter); if the upper gap and the lower gap of the precast concrete sandwich panel do not need to be filled in real time during installation (if a skirting line is arranged on the ground to shield, a decorative line is arranged at the edge of a ceiling or glazed tiles are arranged on the wall surface of a kitchen), the section of the precast concrete sandwich panel in the length direction can be a plane;
3) when in prefabrication, the organic heat-insulating layer 2 is wider than the concrete plates at the two sides by a certain width (about 50mm) at the side edge (namely the vertical joint), and when in installation, the organic heat-insulating layer 2 is coated with an adhesive at the vertical joint in a step-shaped lap joint bonding connection or is fixed by bolts and gaskets or is in plane butt bonding; finding out horizontal steel bar connection at the vertical joint of the concrete slab during installation, such as binding and spot welding at certain intervals;
4) coating adhesive on two sides of the organic heat-insulating layer 2 exposed at the vertical joint, coating the adhesive on the side concrete plates, and then sectionally erecting and pouring concrete to be bonded with the organic heat-insulating layer 2; the outer surface of the anti-cracking mesh cloth is preferably provided with the anti-cracking mesh cloth, the anti-cracking mesh cloth is made of basalt fiber mesh cloth and is good in durability, concrete with the thickness of about 5mm is planed off at two sides of a vertical joint in advance by a milling cutter (the concrete can be planed off by the milling cutter when leaving a factory), an adhesive is coated at a groove of aerated concrete planed off by the milling cutter to be pasted with a template at the installation joint of the anti-cracking mesh cloth, then concrete at the joint is poured, concrete at the joint is coated with a film for curing or is sprayed with water for curing, and putty is scraped;
5) when the concrete slabs on the two sides retract to a certain length in the length direction, the adhesive is coated in gaps between the upper end and the lower end of the installed concrete sandwich plate and the concrete slab, cement mortar is filled in the gaps, the cement mortar is bonded with the middle organic heat-insulating layer 2, the concrete on the two sides and the floor, and the outer surface of the joint concrete is subjected to film coating or water sprinkling for curing.
The fourth embodiment: referring to fig. 8 and 9, the energy-saving thermal insulation wall and the roof according to the embodiment are a precast concrete sandwich panel, and an assembled sandwich outer wall, an installed indoor partition heating partition wall, or an installed assembled sandwich roof panel of a frame structure installed by using the precast concrete sandwich panel; the precast concrete sandwich board comprises inner leaf concrete 1, an organic heat-insulating layer 2, outer leaf concrete 8-3 of an outer wall or outer leaf concrete 8-2 of a roof; the inner leaf concrete 1 and the outer leaf concrete 8-3 and the outer leaf concrete 8-2 of the roof are prefabricated autoclaved aerated concrete slabs, or the inner leaf concrete 1 of the assembled sandwich roof panel or the outer leaf concrete 8-2 are also prefabricated autoclaved aerated concrete slabs, or the outer leaf concrete 8-2 is concrete poured during prefabrication (the strength of aerated concrete is low, the outer leaf concrete 8-2 may be required to be poured on the roof of a person, or the outer leaf concrete 8-2 of the aerated concrete slab is coated with an adhesive after installation and then is poured with 20 mm-30 mm fine stone concrete); the organic heat-insulating layer 2 is an EPS board, or when the organic heat-insulating layer 2 is a hard foam heat-insulating board, tests prove that the organic heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets requirements, or when the organic heat-insulating layer 2 is used for installing an indoor partition heating partition wall, the organic heat-insulating layer 2 can be an EPS board, and also can be a hard foam heat-insulating board, such as an XPS board; the non-combustible heat-insulating material 9 is installed on the side face of a door and window opening, the EPS boards at the vertical joints of the prefabricated autoclaved aerated concrete sandwich board protrude for a certain width of about 50mm, the joints are convenient to connect during installation, the horizontal joints are determined according to the horizontal joint structure selected and used in design, the inner leaf concrete, the organic heat-insulating layer and the outer leaf concrete are bonded layer by using an adhesive, the prefabricated autoclaved aerated concrete sandwich board is formed, and the sandwich board formed by compounding the prefabricated autoclaved aerated concrete and common concrete is formed, and is called as the autoclaved aerated concrete sandwich board for short.
The prefabrication processing method and the installation method of the prefabricated autoclaved aerated concrete sandwich panel are as follows:
1) the prefabricated autoclaved aerated concrete sandwich panel is arranged on the outer side of the frame structure, and the structure meets the corresponding technical regulations according to the types of designed walls; the layered structure, the steel bar installation, the appearance quality and the like of the autoclaved aerated concrete sandwich board meet the regulations of related technical standards and design, and a quality certification system is implemented; the material storage, finished product protection, storage, packaging and transportation are in accordance with corresponding regulations, a layering bonding test is carried out in advance, the tensile strength (namely interlayer bonding force) is not less than the regulations of an industrial standard, a specially-assigned person is responsible for configuring the adhesive, the mixing ratio is accurate, the adhesive and the concrete are preferably prepared by automatic control, a project which needs to be detected by a legal unit on the basis of qualified self-inspection of a construction enterprise needs to be detected by the legal unit, a series of technical data such as the specification, reinforcement arrangement, strength grade, appearance quality, an inspection report and hidden engineering record of the prefabricated autoclaved aerated concrete sandwich panel are provided, and the enterprise needs to provide a self-inspection report and a necessary type inspection report when the prefabricated autoclaved aerated concrete sandwich panel leaves a factory; prefabricating enterprises due to fire prevention measures and the like;
2) the method comprises the following steps of deeply designing a prefabricated autoclaved aerated concrete sandwich board according to design requirements, determining prefabricated concrete sandwich board cells of an outer wall or a roof or an indoor partition wall, and weaving a component processing diagram (including a reinforcement diagram), wherein an organic heat-insulating layer 2 in the prefabricated autoclaved aerated concrete sandwich board protrudes out of the outer sides of inner leaf concrete and outer leaf concrete at a vertical joint of the wall and an adjacent joint (a non-support joint) of the roof board by a certain width for connecting the organic heat-insulating layer 2 at the joint during installation, and the protruding width of the organic heat-insulating layer 2 is determined according to the width of cast-in-place concrete at the joint, such as 50 mm; the drawing of the prefabricated autoclaved aerated concrete sandwich panel for the outer wall indicates the position and specification of installing the non-combustible heat-insulating material 9 on the window, the embedded position and specification of installing the embedded steel plate 4 and the embedded hoisting piece on the inner leaf concrete and the outer leaf concrete and the side surface of the window, the embedded steel plates 4 comprise an outdoor window corner L-shaped embedded steel plate 4-1, embedded steel plates 4-2 arranged at the other positions of the outer leaf concrete 8-3, and embedded steel plates 4-4 arranged on the upper part of the roof marked on a drawing of a prefabricated autoclaved aerated concrete sandwich roof panel, or 4-5 embedded steel plates are arranged under the roof ceiling, if a plurality of embedded steel plates are inconvenient to be arranged when the autoclaved aerated concrete slab is precast, the embedded steel plate can be installed at the later stage, for example, the anchoring steel bar is installed on the autoclaved aerated concrete slab by drilling, and the embedded steel plate is connected with the anchoring steel bar and bonded with the autoclaved aerated concrete slab; if the rigidity of the side wall of the window wall is not enough (the elastic modulus of aerated concrete is too low, the rigidity of the side wall of the window wall may be not enough when the window is large and the window wall is narrow), a full-length L-shaped thin-walled steel plate can be pasted and installed on the inner leaf concrete and the outer leaf concrete of the window wall, the specification of the L-shaped thin-walled steel plate and the variety of steel products meet the design specifications, steel plate strips can be pasted on the outer side edge of the L-shaped thin-walled steel plate according to a certain interval (so as to install the heat-insulation decorative lines and the anti-theft fences around the door and window opening), and an L-shaped pre-embedded steel plate 4-1 is installed on the outer corner edge of the window sill; effective anti-corrosion measures are taken for the embedded steel plate to ensure that the durability is not less than 50 years;
3) the following tests were carried out with reference to the third embodiment:
bonding an autoclaved aerated concrete plate and an EPS plate for a bonding test, bonding a cast-in-place concrete plate and the EPS plate for the bonding test, and damaging the EPS plate instead of a bonding interface;
secondly, mounting an embedded steel plate on the autoclaved concrete slab for testing, wherein the testing comprises welding with steel bars in the autoclaved concrete slab and bonding with an adhesive;
thirdly, carrying out a loading test on the prefabricated autoclaved aerated concrete sandwich board for the outer wall or the roof according to the simple support plate:
the elastic modulus of the autoclaved aerated concrete is small, and a prefabricating manufacturer never prefabricates an autoclaved aerated concrete sandwich board, so that on the basis of qualified bonding tests, the prefabricated autoclaved aerated concrete sandwich board of outer walls or roofs with different spans and different section heights needs to be subjected to a normal section bending test and an oblique section shearing resistance test according to a simple support plate, the detection number of prefabricated components is in accordance with the specification, the stress performance of the prefabricated autoclaved aerated concrete sandwich board is detected to be in accordance with the theory of mechanics and concrete structures, and if the stress performance of the prefabricated autoclaved aerated concrete sandwich board is not in accordance with the theory of layering bonding, whether the layering bonding is in a problem or not is detected; the data of load, deflection and crack applied each time are recorded until the test data such as damage and the like are detected, the regulation of crack control level is required to be met, and the data such as video recording and the like are suitable; recording the load when the deflection of the external wall panel reaches 1/250 span and the load when the prefabricated autoclaved concrete sandwich roof panel reaches the allowable deflection limit value, making a component selection form for design and selection, and detecting by legal units on the basis of enterprise self-checking, wherein the form is suitable for being used as a type inspection project; the external wall panels or the roof panels with more than a certain number are subjected to a loading test according to a certain proportion to be taken as a factory pass certificate;
according to the embodiment, cracks of the autoclaved aerated concrete of the inner leaf may need to be controlled, if cracks need to be controlled, basalt fiber gridding cloth is installed on the outer side of a concrete reinforcement net of the inner leaf to prevent the cracks when an autoclaved aerated concrete slab is prefabricated, and tensile strength of the basalt fiber gridding cloth is determined through tests;
4) preparing an autoclaved aerated concrete slab, an organic heat-insulating plate 2 and an embedded steel plate 4 which meet the design requirements; chiseling the rest sides of the autoclaved aerated concrete slab except the side of the door and window opening; the flatness of the EPS boards is required, the joints of the EPS boards are reduced as much as possible, the EPS boards do not have joints in the length direction of the walls between the windows and the main stress direction of the roof boards, if the joints are bonded into a whole by adopting step-type lap joint coating adhesives, or the sides of the joints of the EPS boards are bonded into a whole by coating or scraping the adhesives during plane (for example, the joints are bonded conveniently by using sand-added epoxy resin adhesives, but a heat bridge is not suitable for heating areas), and the bonding reliability is ensured through tests; the vertical joint of the EPS boards at the edges of the adjacent prefabricated autoclaved aerated concrete sandwich boards can be in a step shape, and can also be formed by coating an adhesive on a plane to be mutually squeezed and adhered (such as adhering by using a sand-added epoxy resin adhesive), wherein the squeezing allowance of the EPS boards is reserved, such as 2mm, and reliable adhesion is ensured through a test; besides mutual bonding, a waterproof sealing material is coated on a gap at the upper part of the EPS board joint for two times of waterproof sealing, and a waterproof sealing material is coated on the EPS board joint for 2 times after the EPS board joint is dried for 1 time, so that the reliable waterproof sealing of the joint is ensured;
5) scraping the adhesive on the aerated concrete plate on one side or/and scraping the adhesive on the prepared EPS plate, bonding the EPS plate with the aerated concrete plate, and rolling the EPS plate; coating or scraping an adhesive on the other side of the EPS board, or/and scraping and smearing the adhesive on the aerated concrete board on the other side, bonding the aerated concrete board on the other side with the EPS board, and rolling the bonded autoclaved aerated concrete sandwich board, wherein the specification meets the design requirement, and the error does not exceed an allowable value; the organic heat-insulating layer 2 of the prefabricated autoclaved aerated concrete sandwich panel at the periphery of the door and window opening is made of a non-combustible heat-insulating material 9 and has the thickness of 50 mm;
6) or the prefabricated autoclaved aerated concrete sandwich board is widened, because the existing aerated concrete slabs are all 600mm wide, in order to reduce the joint workload of construction sites and improve the assembly degree, the prefabricated autoclaved aerated concrete sandwich board needs to be widened: firstly, connecting reinforcing steel bars of adjacent autoclaved aerated concrete slabs at joints to achieve the width of a prefabricated autoclaved aerated concrete sandwich board meeting design requirements, coating an interface agent on EPS boards in the joints and aerated concrete slabs with chiseled side edges, and filling concrete (preferably light aggregate concrete) in the joints to be bonded with the EPS boards and the aerated concrete slabs; bonding the EPS boards with the widened autoclaved aerated concrete boards in the same way, and rolling the EPS boards; bonding the autoclaved aerated concrete plates with the installed EPS plates, connecting the adjacent autoclaved aerated concrete plates with the autoclaved aerated concrete plates installed on the side edges by using reinforcing steel bars, and filling concrete in the seams; rolling the bonded and widened autoclaved aerated concrete sandwich board, ensuring that the specification and the error are within an allowable range, and watering, curing and laminating the joint concrete; the joints of the EPS boards in the prefabricated autoclaved aerated concrete sandwich board are preferably staggered with the joints of the aerated concrete boards on the two sides; the prefabricated autoclaved aerated concrete sandwich panel for the outer wall is preferably divided into grids according to door and window openings, so that the prefabricated autoclaved aerated concrete sandwich panel is simple to prefabricate, convenient to transport and convenient to install; installing an embedded steel plate 4, wherein the outer surface of the embedded steel plate 4 is flush with the aerated concrete of the inner leaf and the outer leaf (a groove is cut by a milling cutter in advance), sticking and installing the embedded steel plate 4, or welding the embedded steel plate 4 with a reinforcing mesh of the aerated concrete of the inner leaf and the outer leaf, or bonding the embedded steel plate 4 with the aerated concrete of the inner leaf and the outer leaf by using an adhesive (meanwhile, welding and bonding are adopted), checking and accepting the installation position and specification of the embedded steel plate, and correcting if errors occur;
7) the autoclaved aerated concrete slab with widened specification is preferably prefabricated, for example, the width of 750mm is matched with the existing autoclaved aerated concrete slab with the width of 600mm for combination, the width of 1.5-2.1 m specification of the window wall can be met or wider, splicing seams are reduced, and the assembling degree of the window wall, the gable wall and the roof panel is improved; the method is technically feasible for increasing the autoclaved aerated concrete slab with the width of 750mm, but is technically difficult to achieve if the autoclaved aerated concrete slab with the width of 900mm is increased;
8) checking the prefabricated autoclaved aerated concrete sandwich panel or comprehensively checking the layering bonding reliability, checking the autoclaved aerated concrete sandwich panel according to a certain proportion for external wall panels or roof panels exceeding a certain number, carrying out a loading test according to a bent member of a simple support plate, controlling the deformation (deflection) not to exceed an allowable value when the load reaches a design standard value, controlling the three pairs of cracks according to an implementation mode to meet the crack control level regulation, and re-processing the reason to be checked if the deformation does not meet the requirement;
9) when the outer leaf concrete 8-2 of the prefabricated autoclaved aerated concrete sandwich roof panel is cast-in-place concrete, bonding the autoclaved aerated concrete slab 1 of the inner leaf with the EPS board, then coating adhesive on the EPS board in the same way as the third embodiment, wherein the adhesive coating is full, paving a reinforcing mesh of the outer leaf concrete 8-2 on the EPS board, installing the embedded steel plate 4 or installing the embedded hoisting piece, casting the outer leaf concrete 8-2, vibrating and flattening.
Further, a high-strength durable fiber cloth 3 is added, wherein the high-strength durable fiber cloth 3 is basalt fiber cloth 3, which is called BFRP cloth 3 for short, or other fiber cloth capable of replacing the BFRP cloth; when BFRP cloth is pasted on the outer surface of the prefabricated autoclaved aerated concrete sandwich board of the outer wall and the side edge of the window, pasting tests need to be carried out on the BFRP cloth pasted on the surface of the prefabricated autoclaved aerated concrete sandwich board, and the third embodiment is referred; the method for pasting the BFRP cloth 3 on the prefabricated autoclaved aerated concrete sandwich panel is the same as the third embodiment, and the method for installing the prefabricated autoclaved aerated concrete sandwich panel as an external wall panel or an roof panel is also the same as the third embodiment, belongs to equivalent substitution, and both belong to the protection scope of the invention.
The construction and installation method for installing the prefabricated autoclaved aerated concrete sandwich panel into the non-bearing outer wall, the roof panel and the indoor partition heating partition wall is the same as the embodiment, and equivalent replacement is carried out, thereby being within the protection scope of the invention. At present, an autoclaved aerated concrete sandwich panel and an outer wall, a partition wall and a roof panel installed by the autoclaved aerated concrete sandwich panel are not available, so that the application of the autoclaved aerated concrete sandwich panel in building a near-zero energy consumption building is limited.
The fifth embodiment: the energy-saving heat-insulating wall body and the roof are a semi-finished heat-insulating plate of autoclaved aerated concrete and a semi-assembled sandwich concrete wall which is formed by bonding and compositely installing the semi-finished heat-insulating plate of the autoclaved aerated concrete and cast-in-place inner leaf concrete on a construction site; or bonding the semi-finished product insulation board of the autoclaved aerated concrete and the cast-in-place inner leaf concrete on a prefabricated platform to form a prefabricated concrete sandwich wallboard, and then installing the prefabricated concrete sandwich wallboard into a fully-assembled sandwich concrete wall; the semi-finished autoclaved aerated concrete insulation board consists of an organic insulation layer 2, high-strength durable fiber cloth 3 and outer leaf concrete 8-3 of an autoclaved aerated concrete slab; the high-strength durable fiber cloth is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; when the organic heat-insulating layer 2 is an EPS plate or the organic heat-insulating layer 2 is a hard foam heat-insulating plate, tests prove that the heat-insulating plate has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; coating or scraping an adhesive to bond the EPS boards and the outer leaf concrete 8-3 of the autoclaved aerated concrete slab; brushing or scraping an adhesive to adhere the BFRP cloth on the outer leaf concrete 8-3 of the autoclaved aerated concrete slab to form an autoclaved aerated concrete semi-finished product insulation board; or placing the semi-finished product insulation board on a prefabricated platform, coating an adhesive on an EPS board of the semi-finished product insulation board, and pouring inner leaf concrete (when the inner leaf concrete 1 is a bearing shear wall, the seam width is large, and when the outer leaf concrete 8-3 of the autoclaved aerated concrete slab is set for fire prevention, the outer leaf concrete gap of the autoclaved aerated concrete slab can be small, such as 50-100 mm, the requirement of filling concrete by connecting seam steel bars is met, namely the width of the inner leaf concrete and the width of the outer leaf concrete can be different), so as to form the prefabricated concrete sandwich wall board;
the method comprises the following steps of (1) taking an autoclaved aerated concrete semi-finished insulation board as an outer template of cast-in-place inner leaf concrete 1 on a construction site, coating or/and scraping an adhesive on the construction site, firstly, step-shaped overlapping and pasting (or fixing by using a plastic bolt and a gasket) or butt-adhesion connection of seams of EPS boards, connecting (welding is proper) reinforcing steel bars at the seams of 8-3 autoclaved aerated concrete boards of outer leaves, coating the adhesive on the outer sides of the EPS boards at the seams and the side surfaces of adjacent aerated concrete boards, pouring or plastering concrete (light aggregate concrete is proper) at the seams to be bonded with the EPS boards and the aerated concrete boards at the side edges, connecting BFRP (bidirectional Forwarding resistance) cloth at the seams after curing to meet certain strength, and forming the outer template of the cast-in-; the inner side of the EPS board is provided with a horizontal dovetail groove, then the reinforcing steel bars of the inner leaf concrete 1 are connected according to relevant regulations, one side of the dovetail groove of the EPS board is coated with or/and sprayed with an adhesive along with the pouring of the inner side concrete, the pouring height of each time of pouring the inner side concrete does not exceed a certain height, then the inner side concrete is coated with or/and sprayed with the adhesive and poured, the EPS board in the semi-finished product outer insulation board and the poured inner side concrete are bonded or further occluded into a whole, and the semi-assembled sandwich concrete wall is installed; or bonding and connecting the EPS boards at the joints of the prefabricated concrete sandwich wall boards on the same construction site, connecting the inner and outer leaf concrete inner reinforcing bars of the EPS boards at the joints, pouring or plastering the inner and outer leaf concrete at the joints, connecting the BFRP cloth at the joints, and installing the full-assembly sandwich concrete wall.
The bonding method of the outer leaf concrete 8-3 of the autoclaved aerated concrete slab and the EPS board and the method for widening the autoclaved aerated concrete slab are the same as the fourth embodiment and belong to equivalent replacement; installing an embedded steel plate 4 on the outer leaf concrete 8-3 of the autoclaved aerated concrete slab and the side edge of the door and window opening, and pasting the BFRP cloth 3 on the surface of the outer leaf concrete 8-3 and the side edge of the door and window opening, wherein the method is the same as the third embodiment or/and the fourth embodiment, and belongs to equivalent replacement; the method and the structure for installing the window periphery and the outer wall attachment are the same as the third embodiment, are equivalent and are all included in the protection scope of the invention.
Embodiment six: referring to fig. 1 and 4, the energy-saving heat-insulating wall and the roof in the embodiment are semi-finished prefabricated heat-insulating plates; the semi-finished prefabricated heat-insulation plate is installed on a base wall body at a construction site for external wall external heat insulation, or the semi-finished prefabricated heat-insulation plate is used as a template of cast-in-place concrete for installing a semi-fabricated concrete external heat-insulation energy-saving wall body at the construction site, or the semi-finished prefabricated heat-insulation plate is bonded and compounded with poured concrete on a prefabricated platform to form a prefabricated concrete heat-insulation wallboard, and the prefabricated concrete heat-insulation wallboard is installed into an assembled concrete external heat-insulation energy-saving wall body; the semi-finished prefabricated heat insulation board consists of a heat insulation layer 2, high-strength durable fiber cloth 3 and an embedded steel plate 4; the high-strength durable fiber cloth 3 is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; when the heat-insulating layer 2 is an EPS plate or the heat-insulating layer 2 is a hard foam heat-insulating plate or other inorganic heat-insulating plates, tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the embedded steel plates 4 comprise window corner L-shaped embedded steel plates 4-1 and embedded steel plates 4-2 at the rest positions of the outer wall; the L-shaped embedded steel plate 4-1 is installed at the corner of a door and window opening by using an adhesive to be bonded with the EPS plate and is bonded with the door and window heat-insulating layer 2, the embedded steel plate 4-2 is bonded and installed at a position (capable of being installed during prefabrication or installed on a construction site) of the EPS plate where an external wall attachment needs to be installed by using the adhesive, and the durability of the embedded steel plate 4 is guaranteed to be no less than 50 years; the tensile bearing capacity generated by the adhesion between the embedded steel plate 4 and the heat-insulating layer 2 is not less than the tensile force generated by the weight of the outer wall attachments and the worst load combination value of negative wind pressure, and certain safety reserve is required; after the embedded steel plate 4 is installed, adhering BFRP cloth 3 to the EPS plate by using an adhesive to form a semi-finished prefabricated heat-insulation plate which is bonded and connected into a whole by using the BFRP cloth 3 and is provided with the embedded steel plate; or the surface of the BFRP cloth 3 is coated with adhesive, is smeared with cement mortar, or is pasted with dry sticky stones, is decorated by water brushing stones or is provided with a non-combustible protective layer 18 such as glazed tiles, and the non-combustible protective layer can be provided with an outer wall decoration layer and a fireproof protective layer in the prefabrication stage or can be provided in the construction stage, as shown in figure 4.
Or further adding a non-combustible heat-insulating material 9, adhering the non-combustible heat-insulating material 9 to the EPS board by using an adhesive, and adhering the non-combustible heat-insulating material 9 to the side surface of a door and window opening to be used as a door and window opening heat-insulating layer, wherein if the non-combustible heat-insulating material 9 is a vertical-filament rock wool board or foamed cement, the non-combustible heat-insulating material 9 is adhered to the EPS board by using the adhesive, if the non-combustible heat-insulating material 9 is the foamed cement, the EPS board is coated with the adhesive, the coated adhesive is moistened and full, and the foamed cement is adhered to the EPS board after being cultured along with pouring of the coated adhesive; then, adhering the BFRP cloth 3 on the non-combustible heat-insulating material 9 (adhering the BFRP cloth when the foamed cement needs to be cured to be dry) to form a semi-finished composite prefabricated heat-insulating plate compounded by the non-combustible heat-insulating material and the heat-insulating layer; the thickness of the non-combustible heat-insulating material 9 is different according to the different fire-proof grade requirements of the designed building, as shown in figure 1; as described in the first embodiment, when the heat-insulating layer 2 is decorated by using a hard foam heat-insulating plate or other inorganic heat-insulating plates or else heat-insulating plate coatings, a plastic anchor bolt is also used to penetrate through the BFRP cloth 3, the heat-insulating layer 2 and the base wall 1 to be fixed properly;
the method for sticking the BFRP cloth 3 on the non-combustible heat-insulating material 9 is the same as the first embodiment, but the first embodiment is on the outer wall on the platform; after the inner side concrete 1 is cultured, a plastic anchor bolt penetrates through the BFRP cloth 3, the non-combustible heat insulation material 9, the EPS board and the inner side concrete 1 to be fixed properly; taking the semi-finished prefabricated heat-insulation plate or the semi-finished composite prefabricated heat-insulation plate as an outer template of the cast-in-place inner side concrete wall to form a semi-assembly type concrete outer heat-insulation energy-saving wall body, which is the same as the fifth embodiment; or the semi-finished prefabricated heat-insulation board is placed on the platform, the EPS board is coated with the adhesive and is bonded and compounded with the poured inner side concrete 1 to form the prefabricated concrete heat-insulation wallboard, and the prefabricated concrete heat-insulation wallboard is installed into the assembled concrete outer heat-insulation energy-saving wall body, which is the same as the fifth embodiment. The semi-assembled concrete external thermal insulation energy-saving wall body or the assembled concrete external thermal insulation energy-saving wall body belongs to equivalent substitution, and is within the protection scope of the invention.
When the non-combustible heat-insulating material 9 is adhered to the outer side of the EPS board, the embodiment is the same as the energy-saving heat-insulating wall structure of the first embodiment, and the adopted fireproof structure and the achieved fireproof grade are the same as those of the first embodiment, so that the requirements of different fireproof grades can be met, and therefore the energy-saving heat-insulating wall of the first embodiment adopts the fireproof structure of the first embodiment, belongs to equivalent replacement, and is included in the protection scope of the invention. However, the method is used for on-site external wall external thermal insulation engineering, and the method is external thermal insulation energy-saving wall engineering which is prefabricated and then installed in an assembly type or semi-assembly type.
The prefabrication processing method and the installation method of the semi-finished prefabricated heat-insulation board or the semi-finished composite prefabricated heat-insulation board are as follows:
1) the method is characterized in that general regulations in the building industry are met, if the material quality is met with relevant regulations of national standards and industrial standards, the prefabricated heat-insulation wall board or the semi-finished prefabricated heat-insulation board is in a layered structure, and the appearance quality is met with technical standards and design regulations, so that a quality certification system is implemented; technical quality control measures, material storage and storage, finished product protection, storage, packaging and transportation are in accordance with corresponding regulations, a layered bonding test is carried out in advance, the tensile strength is not less than the regulations of an industrial standard, a specially-assigned person is responsible for configuring an adhesive, the adhesive preparation and the concrete preparation are preferably automatically controlled, the mixing ratio is accurate, a test piece is reserved on concrete poured in each batch, on the basis of qualified self-inspection of construction enterprises, some projects need to be detected by legal units when being detected by the legal units, a series of technical data such as specification, reinforcing bar, strength grade, appearance quality, detection reports, hidden engineering records, fire prevention measures, component inspection, acceptance and the like for installing the prefabricated heat-insulation wallboard of the fully-assembled wall body are provided, and the enterprises need to provide self-inspection reports when leaving the factory; when leaving the factory, enterprises provide self-checking reports and necessary type inspection reports; prefabricating enterprises due to fire prevention measures and the like;
2) deeply designing an assembled or semi-assembled external heat-insulation energy-saving wall body, determining prefabricated heat-insulation wall boards or semi-finished prefabricated heat-insulation boards into cells, and weaving a component processing diagram (comprising a reinforcement diagram); marking the positions of the embedded steel plates 4 on the EPS plate and the side surface of the window, and marking the side surface of the window with a non-combustible heat-insulating material 9; the embedded steel plate 4 is provided with an outdoor corner L-shaped embedded steel plate 4-1 of the window and embedded steel plates 4-2 installed at other positions of the outer wall, the length of the L-shaped embedded steel plate 4-1 on the side face of the window cannot extend into the window frame or a smaller length of the L-shaped embedded steel plate cannot enter the window frame, the L-shaped embedded steel plate 4-1 is installed and fixed in an internal-external staggered mode when the window is installed, a connecting iron piece 15 of the indoor side installation window can be connected with the inner side concrete 1, or the indoor window is provided with the embedded steel plates 4-3, the connecting iron piece 15 is connected with the indoor embedded steel plates 4-3, and the indoor embedded steel plate 4-3 of the low-; the specification of the L-shaped embedded steel plate 4-1 meets the construction convenience requirement of conveniently installing attachments on the outer wall around the window, and the outer surface of the embedded steel plate 4 is flat with the EPS plate; effective anti-corrosion measures are taken for the embedded steel plate to ensure that the durability is not less than 50 years;
3) the layers are bonded layer by layer, the embedded steel plates 4 are pasted and installed on the EPS boards, the non-combustible heat-insulating materials 9 are pasted and installed on the EPS boards, and the BFRP cloth is pasted for testing:
firstly, carrying out a bonding test on cast-in-place concrete and an EPS board, wherein the damage is to be on the EPS board rather than a bonding interface;
secondly, when the non-combustible heat insulation material 9 is installed on the outer side of the EPS board, a bonding test is carried out on the non-combustible heat insulation material 9 and the EPS board in advance, and the tensile strength perpendicular to the board surface is not less than a specified value;
thirdly, performing a bonding test on the embedded steel plate 4 and the EPS plate in advance, and performing a bonding test on the embedded steel plate 4 and the vertical-filament rock wool plate, wherein the damage is to the EPS plate or the non-combustible heat-insulating material 9 instead of a bonding interface;
fourthly, performing a bonding test on the BFRP cloth 3 and the EPS board, and performing a bonding test on the BFRP cloth 3 and the non-combustible heat-insulating material 9, wherein the vertical tensile strength is not less than a specified value;
carrying out a bonding test on the BFRP cloth 3 and the concrete: bonding the BFRP cloth strips with a certain width with concrete by using an adhesive for a certain length, wherein the coated adhesive should seep out of the BFRP cloth, and carrying out parallel tensile strength detection after curing; the sticking test data is not less than a certain number, the average value of the test results is taken, if the number exceeds 10% of the test data, the last effective number is not less than the specified number; thus, when the door and window meet the shearing resistance bearing capacity required by the design, the BFRP cloth needs to be adhered to the base wall in the width; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of layers of the adhered BFRP cloth should be increased, certain safety reserve should be provided, and the adhering range should meet the design regulation;
sixthly, performing a bonding test on the BFRP cloth 3: mutually sticking BFRP cloth strips with certain width by a certain length, wherein the smeared adhesive should seep out of the BFRP cloth, carrying out parallel tensile strength detection after curing to determine the parallel tensile strength of mutual lap joint sticking between the BFRP cloth strips so as to determine the lap joint sticking width required by the BFRP cloth meeting the strength requirements of lap joint sticking and the like; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; the bonding test data is not less than a certain number, the average value of the test results is taken, if the average value exceeds 10% of the test data, the last effective number is not less than the specified number; fifthly, the test results and the mix proportion of the fifth and sixth are also provided for field installation units to guide the installation to be appropriate; 4) preparing an EPS plate meeting design requirements in advance, preparing an embedded steel plate 4 meeting the specification and corrosion prevention requirements, and installing the embedded steel plate 4;
the flatness of the EPS boards is required, the joints of the EPS boards are reduced as much as possible, no joints are preferably arranged in the length direction of the wall between the windows of the EPS boards, and if the joints are connected into a whole by adopting a step-type lap joint coated adhesive (or connected by plastic anchor bolts), or the joints of the EPS boards are connected into a whole by coating or scraping the adhesive in a surface mode to bond the opposite surfaces of the joints of the EPS boards into a whole (for example, the joints are conveniently bonded by using a sand-added epoxy resin adhesive, but the heat bridge heating area is not used as much as possible), the bonding reliability is ensured;
5) marking on a prefabricated platform, placing an EPS board in the marking range, bonding a non-combustible heat insulation material 9 (such as a vertical silk rock wool board) with the EPS board on the inner side of the side surface of a door window or fixing by adding a plastic anchor bolt, wherein the vertical joint of the EPS boards at the edge of the vertical joint of adjacent prefabricated heat insulation wallboards or semi-finished prefabricated heat insulation boards can be of a ladder type, or can be a plane coated with an adhesive to be squeezed and adhered oppositely; bonding the L-shaped embedded steel plate 4-1 and the rest embedded steel plates 4-2 of the outer wall with an EPS plate and bonding with a door window corner non-combustible heat insulation material 9 by using an adhesive, and checking and accepting the position, specification and quantity of the installed embedded steel plates, if the embedded steel plates are mistakenly corrected;
6) after the adhesive for adhering the pre-buried steel plate 4 on the EPS board is cured, adhering a non-combustible heat-insulating material 9 on the EPS board, brushing and scraping the adhesive on the EPS board, and adhering the non-combustible heat-insulating material 9 and the EPS board, wherein the thickness and the material of the non-combustible heat-insulating material 9 meet the design requirements; when the non-combustible heat-insulating material 9 is poured foaming cement, curing is needed;
7) the BFRP cloth 3 is stuck and installed on the EPS board or the non-combustible heat-insulating material 9, and the following regulations are met:
the width and the length of BFRP cloth 3 meet the requirement of mutual lap joint length of each semi-finished prefabricated heat-insulation board or semi-finished composite prefabricated heat-insulation board when the semi-finished prefabricated heat-insulation boards are installed, the installed BFRP cloth 3 does not have seams as much as possible, otherwise, the installation is troublesome, the width and the length of the BFRP cloth comprise the width and the length of the BFRP cloth adhered to a window sill wall or adhered to a door and window opening side base wall, the width of the BFRP cloth 3 adhered to inner leaf concrete and the tensile bearing capacity of the BFRP cloth are included, the requirement of the door and window opening shear resistance bearing capacity specified by design is met, and certain safety reserve is needed; if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of layers of the adhered BFRP cloth should be increased, certain safety reserve should be provided, and the adhering range should meet the design regulation; the length of the BFRP cloth at the horizontal joint is determined according to the structure of the horizontal joint of the assembled wall body; when cutting the BFRP cloth, coating emulsion on the edge of the BFRP cloth and sealing the edge;
secondly, coating an adhesive on the EPS board to stick the BFRP cloth 3, scraping the BFRP cloth 3 by using a scraper, wherein the color of the BFRP cloth is deepened to explain that the BFRP cloth is stuck, and the BFRP cloth 3 is stuck on the EPS board and the pre-buried steel plate 4 to form a semi-finished prefabricated heat-insulation board for external heat insulation, wherein the accurate size of a door and window opening is ensured, or the surface of the BFRP cloth 3 is coated with an adhesive installation finishing material, such as a curtain wall decorative board, a facing brick, dry adhesive stone, water brush stone and the like;
thirdly, when the non-combustible heat insulation material 9 is pasted on the EPS board, brushing or scraping an adhesive on the non-combustible heat insulation material 9 to paste the BFRP cloth 3, and scraping the BFRP cloth 3 by using a scraper, wherein the BFRP cloth is pasted when the color of the BFRP cloth is deepened; when the non-combustible heat-insulating material 9 is a vertical-wire rock wool board, cement polymer mortar is firstly coated or scraped on the exposed rock wool at the joint or the external corner of the vertical-wire rock wool board to be bonded with the vertical-wire rock wool board, and the BFRP cloth is then bonded after the cement polymer mortar is cured;
8) the semi-finished prefabricated insulation board or the semi-finished composite prefabricated insulation board is used as a template of cast-in-place inner side concrete 1, EPS boards at the joint or non-combustible insulation materials at the joint are connected, BFRP cloth at the joint is connected, and the semi-finished prefabricated insulation board or the semi-finished composite prefabricated insulation board is installed to form an outer insulation wall body of a semi-fabricated concrete wall; or after the prefabricated concrete external thermal insulation wallboard is installed as an external thermal insulation concrete shear wall or a non-bearing external thermal insulation wall body of a frame structure according to relevant regulations, connecting EPS boards at the joint, or connecting non-combustible thermal insulation materials at the joint, connecting BFRP cloth at the joint, constructing according to the external wall structure determined by design (the shear wall and the non-bearing concrete wall are different in connecting structure), forming a semi-assembly type or assembly type external thermal insulation energy-saving wall body meeting different fire protection requirement grades, wherein most of external wall decorations can be finished at the prefabrication stage, and the external wall decorations at the joint are supplemented at a construction site.
If the non-combustible heat insulation material 9 is not adhered to the EPS board, the non-combustible heat insulation material 9 can be installed on the outer side of the BFRP cloth 3 in a construction site, then a curtain wall decorative board is installed on the outer side of the non-combustible heat insulation material 9, and the curtain wall decorative board is connected with the embedded steel plate 4 through steel keels. It is also necessary to meet the fire protection requirements with reference to the other construction measures of the aforementioned embodiments, but the amount of installation work at the construction site is increased.
Embodiment seven: referring to fig. 12, the energy-saving heat-insulating wall and roof of the embodiment is composed of a base wall 1, a non-combustible heat-insulating layer material 9 and high-strength durable fiber cloth 3; the high-strength durable fiber cloth 3 is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; the non-combustible heat-insulating material 9 is a rock wool board, a foamed cement board and the like; installing a non-combustible heat-insulating material 9 on the base wall 1 (auxiliary fixing by a plastic expansion nail or sticking by adding an adhesive); adhering the BFRP cloth 3 to the surface of the non-combustible heat-insulating material 9 by using an adhesive, adhering the BFRP cloth 3 to the side surface of a door and window opening, adhering the BFRP cloth 3 to the non-combustible heat-insulating material 9, adhering the BFRP cloth to the inner side of the base wall 1, adhering the BFRP cloth to the side surface of a deformation joint, or fixing the BFRP cloth 3 and the non-combustible heat-insulating material 9 to the base wall 1 by using a plastic anchor bolt; the bonding width of the BFRP cloth and the wall body of the base layer at the side edge of the door window is not less than a specified value, such as 150mm, and is not less than the shearing bearing capacity of the BFRP cloth required by the design, if the design value of the tensile strength of the BFRP cloth does not meet the shearing bearing capacity, the number of layers of the bonded BFRP cloth should be increased, certain safety reserve should be provided, and the bonding range should meet the design specification. The outside of the BFRP cloth 3 can be decorated at will, and when the coating is decorated, a plastic anchor bolt penetrates through the BFRP cloth 3 and the non-combustible heat-insulating material 9 to be fixed with the base layer wall 1.
Furthermore, an embedded steel plate 4 is additionally arranged; the embedded steel plates 4 comprise L-shaped embedded steel plates 4-1 at corners of outdoor doors and windows and embedded steel plates 4-2 installed at other positions of the outer wall, the L-shaped embedded steel plates 4-1 and the embedded steel plates 4-2 installed at other positions of the outer wall are bonded with a non-combustible heat-insulating layer material 9 by using an adhesive (the rock wool plates installed on the embedded steel plates can only be vertical rock wool plates which have tensile strength vertical to the plate surface, and the horizontal rock wool plates do not have tensile strength), or the embedded steel plates 4-2 installed at other positions of the outer wall are connected with the base wall 1 (which has a heat bridge, the embedded steel plates are fixed with the base wall 1 safely in the project with low energy-saving heat-insulating requirement), the L-shaped embedded steel plates 4-1 installed at the corners of the outdoor doors and windows are used for installing the L-shaped embedded steel plates 4-1, and the connecting iron pieces of, the safety of installing the window is ensured, and the installation of the sunshade roller shutter outside the window and the installation of the decorative lines around the window are convenient; the embedded steel plates 4-2 arranged at the rest positions of the outer wall correspond to the positions of the outer wall attachments needing to be arranged on the outer wall; tensile bearing capacity generated by the bonding area between the embedded steel plate 4 and the non-combustible heat-insulating layer material 9 is not less than the pulling force of the embedded steel plate 4 by the weight of the attachment for installing the outer wall and the combined value of the negative wind pressure load, and certain safety reserve is provided.
The method for sticking the BFRP cloth 3 to the incombustible heat insulating material 9 in this embodiment is the same as that in the first embodiment, and is an equivalent substitution.
The protective layer on the current non-combustible heat-insulating material is a cement polymer mortar thin plastering protective layer which is easy to crack and seep water and has poor durability. The BFRP cloth has high tensile strength and almost unlimited durability because the BFRP cloth is essentially basalt and has good various corrosion resistance, and the installed BFRP cloth can not crack absolutely. Although most of the non-combustible heat-insulating materials are unstable in stress performance and unstable in waterproof and freeze-thaw resistance, high-quality non-combustible heat-insulating materials are not excluded, and some areas have small wind pressure and the heat-insulating layer is less affected by negative wind pressure, so that the non-combustible heat-insulating materials are well protected when the outer wall attachment is a curtain wall decorative plate, and the use requirements can be met. The composite insulation board of the non-combustible insulation material and the organic insulation layer is arranged on a base wall (the non-combustible insulation material 9 is adhered to the organic insulation layer 2 in advance), the non-combustible insulation material 9 is located on the outer side of the organic insulation layer 2 after the composite insulation board is arranged, and the thickness of the non-combustible insulation material 9 is determined according to the fireproof requirement.
The eighth embodiment: the energy-saving heat-insulating wall and the roof in the embodiment are composed of a base wall, an organic heat-insulating layer, high-strength durable fiber cloth, an embedded steel plate and a non-combustible material; the high-strength durable fiber cloth is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; the organic heat-insulating layer is an EPS plate, or when the organic heat-insulating layer is a hard-foam heat-insulating plate, tests prove that the organic heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the noncombustible material is cement mortar, facing bricks, rock wool boards and the like; the EPS boards are arranged on the base layer wall body, so that no vertically through gap exists between the EPS boards and the base layer wall body, no vertically through gap exists between adjacent EPS boards, the sticking area is not less than a certain percentage, and the fire spreading caused by the chimney effect formed by the through gap when fire flames penetrate into the gaps in case of fire is avoided; sticking the pre-buried steel plate to the EPS plate; then adhering BFRP cloth on the EPS board (including adhering to the embedded steel plate), wherein the BFRP cloth is also installed on the side heat-insulating layer of the door and window opening and installed on the indoor base layer wall; and then installing incombustible materials such as cement mortar plaster or facing bricks on BFRP cloth, or fixing a steel keel connecting iron piece for installing the curtain wall decorative plate with the embedded steel plate, and sticking nails on the steel keel to fix the curtain wall decorative plate. In the embodiment, cement mortar plastering or tapestry bricks or curtain wall decorative plates arranged on BFRP cloth are used as protective layers for fire prevention, or noncombustible heat preservation layers such as transverse-wire rock wool plates are also arranged in the curtain wall decorative plates, so that the fire resistance is further improved.
The ninth embodiment: referring to fig. 13, the energy-saving thermal insulation wall and roof of this embodiment is an energy-saving thermal insulation wall composed of a base wall 1, a thermal insulation layer 2, or various outer protective layers 8, where the base wall 1 is various base walls such as concrete, masonry, building blocks, and wood-structured outer walls, and the various outer protective layers 8 are thick plastering protective layers or thin plastering protective layers of the second embodiment; the heat-insulating layer 2 is an EPS plate, or when the heat-insulating layer is a hard-foam heat-insulating layer, tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; adhering the EPS boards to the base layer wall 1, wherein the adhering area is not less than a certain percentage and is determined by expert counseling; coating an adhesive 12 on the side surface of the EPS board, pasting the adjacent EPS boards with each other, if a gap is formed, inserting an EPS board thin strip into the gap to paste with the two sides, or smearing the adhesive to fill the gap, if the adhesive is cement polymer mortar (forming a heat bridge, which is not recommended in heating areas), bonding the EPS boards into a whole, or further arranging various outer protective layers 8 outside the EPS boards: thin plastering protective layers, cement mortar plastering protective layers and the like; the EPS boards are soft foam insulation boards and are recoverable within an elastic range when the deformation is not more than 5%.
Or a high-strength durable fiber cloth 3 is additionally arranged, wherein the high-strength durable fiber cloth 3 is basalt fiber cloth, called BFRP cloth 3 for short, or other fiber cloth with the performance of the BFRP cloth 3; BFRP cloth 3 is pasted on the inside and outside of the base layer wall body 1, or/and the EPS board, or various outer protection layers 8 on the outer side of the EPS board (for example, BFRP cloth is pasted on the inside and outside of the wood board of the wood structure outer wall), so that the energy-saving heat-insulating wall body which can exert the bearing capacity of the EPS board or/and the BFRP cloth is formed. The embodiment can exert the shearing resistance bearing capacity of the horizontal fibers of the BFRP cloth 3 on the plane of the wall body, can exert the tensile bearing capacity of the vertical fibers of the BFRP cloth 3 when the wall body is bent in earthquake and strong wind, and when the tensile strength of the BFRP cloth 3 is designed and utilized, the vertical seams of the BFRP cloth 3 are mutually adhered to meet the strength requirement of the BFRP cloth 3 and the like. The embodiment has important significance for wood structure buildings in tornado and typhoon areas and various building outer walls in earthquake areas. The bonding area of the EPS boards and the base layer wall 1 is not less than a specified value, such as not less than 70% or 80%, and is determined by expert counseling, so that the shear resistance and the bearing capacity of the outer wall, especially the masonry wall, are increased to a non-bearing outer wall, and the waterproof performance of the outer wall can be improved by mutually bonding the sides of the EPS boards.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, are included in the scope of the present invention.
Instructions for the use of the adhesive:
the following strips are adhesives that may be used in the present invention and are provided for reference. The adhesive is a huge system and has a plurality of varieties, the adhesive produced by various manufacturers has different varieties, the following mixing ratio is only used as reference, and the following effects are expected to be achieved:
1) the engineering is expected to be perfected in the process of using the adhesive, and whether a bonding test is qualified or not is regarded as the standard. The adhesive may be other adhesive meeting the use requirement of the invention, new adhesive varieties are continuously generated, and the adhesive can be used as long as the adhesive is non-toxic and harmless and meets the requirements of bonding strength and durability, and can replace the adhesive used for reference provided by the invention.
2) The energy-saving and heat-preserving engineering can not be separated from the adhesive, an engineering manager is familiar with the adhesive and is vital to ensuring the quality of the energy-saving and heat-preserving engineering, the engineering manager is expected to be familiar with the adhesive by using the adhesive and can flexibly master the mixing proportion, and when the polymer adhesive is prepared, the content of the cement-based acrylate emulsion or the cement-based acrylate copolymer emulsion is adjusted, and the content of other additional materials is adjusted, so that different bonding requirements are met.
And (1) adhering the embedded steel plate to an EPS plate or other heat-insulating layers, and adhering by using an epoxy resin adhesive or other adhesives meeting the requirements of adhesion reliability and durability except water-soluble adhesives. The adhesion damage between the experimental embedded steel plate and the heat-insulating layer is qualified on the heat-insulating layer instead of the adhesion interface, and the epoxy resin adhesive capable of being adhered on a wet base layer is available at present. Although the embedded steel plate can be adhered to the EPS plate by using a cement polymer adhesive prepared by a water-soluble adhesive such as a cement-based acrylate copolymer emulsion, the embedded steel plate is always attached to the EPS plate without worry, and a special drawing detector is required to check the tensile bearing capacity of the adhesion between each embedded steel plate and the EPS plate, so that the construction progress is influenced, and the application is not feasible.
The EPS board or other heat-insulating layers can also be adhered to the base layer by using epoxy resin adhesive, so that the problem that the installed external wall heat-insulating board often falls off is solved, or clean sand (preferably quartz sand) is added into the epoxy resin adhesive for leveling and reducing cost, the sand adding amount is different along with the different thicknesses of the sand, and experiments determine that other adhesives except water-soluble adhesives meeting the requirements of bonding reliability and durability are selected.
The natural environment of each region is different, the content of corrosive substances such as acid rain and the like in the air is different, and the endurance life of the hot-dip galvanized steel plate cannot be guaranteed for 30 years in some regions. In order to improve the endurance life of the embedded steel plate, the embedded steel plate is modified by adding other materials into the epoxy resin adhesive besides a full-length anti-corrosion measure, such as a hot-galvanized steel plate or a cold-galvanized steel plate, so as to improve the anti-corrosion performance, such as adding a certain amount of mica powder and auxiliary materials (a small amount of bentonite and the like) meeting a certain fineness requirement, or adding glass flakes (with high price) with a high aspect ratio, and uniformly stirring, wherein the amount of the mica powder and the auxiliary materials is determined by tests. The epoxy resin is an anticorrosive material, the anticorrosive effect is greatly improved after the mica powder is added, the high diameter-thickness ratio of the mica powder enables the mica powder to have a shielding effect and a labyrinth effect, the time for water and other various corrosive substances to pass through the epoxy resin is greatly prolonged, and therefore the epoxy resin adhesive has excellent acid and alkali resistance, and becomes an anticorrosive epoxy resin adhesive. The steel plate is adhered by the anticorrosion epoxy resin adhesive, the epoxy resin adhesive coated on the inner surface and the outer surface of the embedded steel plate meets a certain thickness, the anticorrosion endurance life of the embedded steel plate is prolonged, and anticorrosion measures of galvanizing and coating the anticorrosion epoxy resin adhesive can be taken for the embedded steel plate. The method is determined according to different local corrosive substance contents, and aims to achieve the purpose that the corrosion prevention age is not less than 50 years or longer (but various current simulation detections can only relatively compare corrosion prevention performance, and no detection means capable of judging the corrosion prevention age of different corrosion environments exists at present). The special anticorrosive epoxy resin adhesive is prepared by an epoxy resin adhesive manufacturer, is qualified by detection of a third-party detection mechanism, is used for engineering, and is simple and convenient to construct and low in price.
Bar 2 cement polymer mortar: the insulation board is adhered to a base layer (a wall or a roof), or when the autoclaved aerated concrete slab is adhered to an insulation layer such as an EPS board, cement polymer mortar can be adhered, and the 1 st adhesive can be also used for adhering, so long as the adhesive damage is ensured to be positioned on the insulation board or meet the requirement of tensile strength, the damage is positioned on the EPS but not on an adhesion interface, and the requirements of no pollution and durability are met; or most areas are pasted by cement polymer mortar, and partial areas are pasted by moisture-proof epoxy resin adhesive. And in the fifth embodiment, the semi-finished aerated concrete outer insulation board is used as an outer template of the cast-in-place inner leaf concrete on the construction site, and in the sixth embodiment, the semi-finished prefabricated insulation board is used as an outer template of the cast-in-place inner leaf concrete on the construction site, and cement polymer mortar for the adhesive is coated or scraped on the inner side of the insulation board. And the prefabricated EPS heat-preservation decorative lines which are arranged on the periphery of the prefabricated EPS window board or window and are adhered with the BFRP cloth can be adhered by cement polymer mortar or adhered by the 1 st adhesive, and the tensile strength is required to be not less than a specified value.
Preparing a liquid material, namely selecting a cement-based acrylate copolymer emulsion with strong adhesive force, water resistance and excellent durability, adding a certain amount of water into the original emulsion stock for dilution, wherein the ratio of the emulsion to the water is that the emulsion to the water is 1 to (1.5-2.0), and a pH value regulator such as (AMP-95) can be added, and when the pH value of the diluted emulsion is tested to be 8 or slightly higher than 8, caustic soda or edible alkali is not suitable to be used as the pH value regulator; then adding 1-2% of cellulose ether MC into the neutral diluted emulsion, uniformly stirring in a viscous state, and adding no preservative when the emulsion is prepared and used.
Preparing powder, namely cement (preferably containing 3-5% of silica fume, namely silica fume, the small-size effect of the silica fume can also increase the bonding effect and the tensile strength), or adding cellulose ether MC accounting for 2-3% of the weight of the cement into the cement, so that the cellulose ether MC does not need to be added into the emulsion, and the cement, the silica fume and the cellulose ether MC are uniformly stirred. The proportion of cement to sand is: mixing and stirring cement (containing silica fume and cellulose ether MC) and clean sand (the mud content is less than or equal to 3%) 1: 0.8-1.0 uniformly (stirring with sand if the sand is wet); when the aerated concrete plate is adhered, if the surface of the aerated concrete plate is smooth, quartz sand of 40-100 meshes is preferably used, and the surface roughness is adjusted according to different degrees.
The amount of the added cellulose ether MC is proper according to the viscosity of the prepared cement polymer mortar, and is adjusted through tests.
And then adding the prepared powder into the prepared and uniformly stirred liquid material, and adding a defoaming agent and a dispersing agent, wherein the adding amount is based on the condition that the powder is well dispersed and does not foam, and the powder and the liquid material are uniformly stirred to form viscous cement polymer mortar which is convenient to wipe.
The cellulose ether MC has good water-retaining property, the cellulose ether MC adopts methyl cellulose ether with good dispersibility and good water-retaining property, and the addition amount of the cellulose ether MC and the water-retaining property of the MC relate to the important problems of whether the cement polymer mortar is viscous and whether the water-retaining effect is good or not, and relate to the important problem of whether the cement can be fully hydrated or not. Different cellulose ether MC have different water retentions at different temperatures, cellulose ether MC of different manufacturers have different water retentions, and the amount of the added cellulose ether MC can be added according to the manufacturer specification for experimental preparation. The hydroxypropyl methyl cellulose ether can be used when the outdoor highest temperature is not higher than 35 ℃, and the modified hydroxyethyl methyl cellulose ether can be used when the outdoor highest temperature is higher than 35 ℃.
Item 3 interfacial agent: the adhesive is used for bonding cement mortar plastering or cast-in-place concrete and EPS boards, or bonding the side surfaces of joints of EPS boards with each other (except the sealing and water-proofing of the upper ends of the joints of the EPS boards on roofs), is commonly called as an interface agent, and is prepared by adding water into cement-based acrylate copolymer emulsion with strong adhesive force, water resistance and excellent durability for dilution and adding adhesives prepared from other materials.
Diluting the emulsion with water and adding a pH regulator such as (AMP-95) as in item 2, testing that the pH value of the diluted emulsion is 8 or slightly higher than 8, adding 1-2% of cellulose ether MC into the neutral diluted emulsion, stirring uniformly in a viscous state, and adding no preservative when the emulsion is used along with preparation.
The powder is cement, the cement (containing 3% -5% of silica fume, preferably, and uniformly stirred) is added into the prepared liquid material, and the defoamer and the dispersant are also added, so that the powder and the liquid material are uniformly stirred into slurry paste, namely the interface agent. When the interfacial agent is coated on an EPS plate, the coating is in a full state, is not easy to dry quickly and is not easy to flow. The interface agent does not need to add sand, and the sand can be bonded, but the labor capacity is increased.
The method has the advantages that the cement amount is small for convenient coating, so that the cellulose ether MC needs to be added into the prepared liquid material to ensure the water retention property, and the possible addition amount of the cellulose ether MC added into the cement is insufficient, so that the good water retention effect cannot be realized.
Tests prove that after the EPS boards are coated with the interface agent, cement mortar is smeared or concrete is poured, after the EPS boards are cured, the broken surfaces can be seen, the adhesive can be seen to permeate into the EPS boards by 3-5 mm, the bonding surfaces of the EPS boards and the concrete are pulled or broken, the EPS boards are damaged, and the bonding is qualified. The adhesion test should be carried out in advance, the damage should be on the EPS boards, and the determined mixing ratio should be biased to safety. Or the interface agent of the strip can be matched with the cement polymer mortar of the 2 nd strip for use, the interface agent of the strip is coated on the EPS board, and then the cement polymer mortar of the 2 nd strip is smeared for bonding.
The acrylic ester copolymer emulsion can be processed into redispersible dry rubber powder, but in order to improve the on-site instant solubility during the production of the redispersible dry rubber powder, polyvinyl alcohol is required to be added, and the polyvinyl alcohol is very easy to biodegrade, so that the emulsion adhesive is good when being directly used. However, redispersible dry rubber powder processed by using an acrylic ester copolymer emulsion is not excluded, and tests prove that reliable bonding by using the redispersible dry rubber powder is also possible, but it is difficult to confirm that the content of polyvinyl alcohol in the redispersible dry rubber powder selected does not exceed an allowable value. The acrylate copolymer emulsion with strong adhesive force, water resistance and excellent durability produced by chemical enterprises is directly purchased, the cost for preparing the polymer adhesive is low, the dosage of the emulsion has transparency, the bonding quality can be ensured, and technical managers have a plurality of centers on quality control.
The content of the solid matters of various water-soluble adhesives is about 50 percent, and the adhesives can be bonded by vinyl acetate-ethylene emulsion, but the adhesive force, the durability and the water resistance of the adhesives are not as good as those of acrylate copolymer emulsion; the acrylic ester emulsion has good waterproofness and durability, but has poor bonding affinity with EPS boards, and the acrylic ester emulsion and the prepared polymer thereof can be used for bonding BFRP cloth with concrete or cement mortar and preparing a cement polymer waterproof coating to be coated on the concrete.
And 4, bonding the non-combustible heat-insulating material with the organic heat-insulating layer, wherein the adhesive is selected according to different types of the non-combustible heat-insulating material.
For example, the incombustible insulating material is a vertical-filament rock wool board or a foamed cement board, and can be bonded with the epoxy resin adhesive of item 1, but the cost is high, and it can be bonded with cement polymer mortar of item 2 (fine sand is used when the bonding surface is flat).
And 5, adhering the BFRP cloth to a non-combustible heat-insulating material, an embedded steel plate and cement mortar or concrete (including bonding with an aerated concrete plate), wherein a cement-based acrylate copolymer emulsion or a cement-based acrylate emulsion with excellent water resistance and durability is recommended to be selected, and the glass transition temperature of the emulsion is not higher than the local minimum temperature.
The ratio of the emulsion to water is preferably within 1 to (0.5-1.5), or a coupling agent is added into the primary pulp of the emulsion adhesive, and the emulsion is directly pasted after being uniformly stirred. Adding 1-2% of cellulose ether MC (in the emulsion), and optionally adding a pH regulator such as (AMP-95), testing that the pH value of the diluted emulsion is 8 or slightly higher than 8, adding 1-2% of cellulose ether MC into the neutral diluted emulsion, stirring uniformly, and optionally adding a preservative.
Preparing powder, namely cement (containing silica fume and cellulose ether MC) and clean sand (the mud content is less than or equal to 3 percent) which are 1 to 0.5-1, adjusting the mesh number and the quantity of the sand according to the roughness of a bonded surface, and adding the sand and the cement when the sand is wet; when the BFRP cloth is externally decorated by paint, the clean sand is preferably changed into sericite powder with the diameter-thickness ratio of not less than 50, and the cement (containing silica fume and cellulose ether MC) and the sericite powder are 1 to (0.1-0.4).
The liquid material and the cement powder are uniformly stirred by an electric drill to form paste, the cement mixing amount is not excessive, otherwise the bonding effect is influenced, the coating is convenient, the non-sagging viscosity is appropriate, the coating omission is avoided, the sagging is avoided, and the BFRP cloth can be used for bonding.
The adhesive for sticking the BFRP cloth has more emulsion content and good bonding effect, and the adhesive has a waterproof effect.
When the BFRP cloth is pasted on the inner leaf concrete on the side surface of the indoor window, if the inner leaf concrete is thin, such as only 60mm, and the bonding area is narrow, the BFRP cloth can be pasted by using the fiber dipping structural adhesive, and tests prove that the pasting of the BFRP cloth by using the fiber dipping structural adhesive meets the requirement of the anti-shearing bearing capacity, or the BFRP cloth is pasted on the indoor wall surface in a rotating way.
All the emulsion is easy to bond with concrete, so that the strip does not need to emphasize that the emulsion has strong adhesive force, but when the BFRP cloth is pasted on an outdoor cement mortar plastering layer or concrete, the vitrification temperature of the emulsion is not higher than the local lowest temperature.
And the 6 th strip is used for overlapping and pasting the BFRP cloth with each other by using the adhesive, and can be pasted by using the 5 th adhesive or the 5 th emulsion adhesive raw stock.
And the 7 th strip is used for coating or scraping the upper end of the gap of the EPS boards on the roof.
The waterproof sealing material is classified into a waterproof sealing material of the 1 st pass and a waterproof sealing material of the 2 nd pass. The 1 st waterproof sealing material adopts cement-based acrylate copolymer emulsion protoplasm with strong adhesive force, water resistance and excellent durability, the emulsion used for preparing the 2 nd waterproof sealing material is cement-based acrylate copolymer emulsion or cement-based acrylate emulsion, and the glass transition temperature of the emulsion is not higher than the local lowest temperature.
The liquid material is the primary emulsion pulp, and water is strictly forbidden to be added into the primary emulsion pulp because the water is added to increase the powder, so that the elasticity of the waterproof sealing material is influenced.
The powder cement (containing 3-5% of silica fume) and sericite in the ratio of 1 to 10-20% are mixed through stirring.
Adding the prepared powder, dispersant and defoamer into the emulsion raw stock, and stirring uniformly to obtain a pasty polymer convenient for brushing or scraping. And (3) coating the 1 st time waterproof sealing material on the upper end of the gap of the EPS board of the roof, drying, and coating the 2 nd time waterproof sealing material, wherein a test is firstly carried out to ensure that the waterproof sealing is reliable and then the waterproof sealing material is applied to engineering. The waterproof sealing material is a cement polymer waterproof coating material, and the cement polymer waterproof coating material in the building material market can be purchased, but the purchased waterproof coating material meets the requirement of the strip. The glue film formed after the emulsion virgin stock is dried is a waterproof glue layer, the ultraviolet resistance is good, the water in the emulsion is thinned after evaporation, the powder can be thickened, but the powder is added to affect the bonding with the EPS board and is inconvenient to brush, the waterproof sealing material is coated at the gap for the second time, and the 3 rd interface agent coated on the side surface is bonded into a whole when the EPS board for the roof is installed, so that the secondary waterproofing is formed, and the waterproofing reliability can be ensured.
Because the glass transition temperature of the cement-based acrylate copolymer emulsion with strong adhesive force, water resistance and excellent durability is-13 ℃ at the lowest, the glass transition temperature of the acrylate emulsion is-40 ℃ and can meet the use requirement of severe cold regions, but the adhesive property of the acrylate emulsion and the EPS boards is poor, the waterproof sealing material prepared by firstly coating the acrylate copolymer emulsion with strong adhesive force at the upper end of the gap of the EPS boards on roofs in regions with low temperature in winter is adhered to the EPS boards, the EPS boards are flexible foams and can adapt to the shrinkage deformation of the waterproof sealing material in winter, but the waterproof sealing material prepared by coating the acrylate emulsion meeting the glass transition temperature requirement at the second time can adapt to the temperature change and meet the waterproof sealing requirement.
The polyacrylate emulsion or the acrylate copolymer emulsion is the emulsion raw material for preparing the JS waterproof coating at present, and the addition of powder is similar to the preparation of a cement polymer waterproof coating, but the quantity of the powder added into the waterproof sealing material is small, and the formed waterproof glue layer is soft and is more favorable for water resistance, because the roof concrete poured on the EPS board protects the waterproof sealing material.
The 8 th gap is filled with an elastic waterproof sealing material called caulking agent, and the caulking agent is required to be filled for sealing when gaps between the prefabricated EPS window board and the outer wall and between the decorative lines are installed. The emulsion for preparing the caulking agent meets the requirement of glass transition temperature, the 7 th powder is increased in quantity (the powder is only fine sand), the 7 th powder is stirred and mixed uniformly to form a viscous paste to obtain the caulking agent, the caulking agent is conveniently filled into a gap by a trowel to play a role of sealing and waterproofing, and other waterproof sealing materials meeting the durability can also be purchased for sealing. And (3) applying silane modified polyether glue, namely MS glue, to the gap with large relative displacement for waterproof sealing.
And if 9, when the BFRP cloth is decorated by the water brushing stone, the dry sticky stone and the like, or the facing brick is pasted, or the cement mortar is smeared, or the heat insulation mortar is smeared (the heat insulation mortar is smeared on the BFRP cloth on the side surface of the indoor window), the cement-based acrylate copolymer emulsion or the cement-based acrylate emulsion is selected, the vitrification temperature of the emulsion is not higher than the lowest temperature of the use environment, the concentration of the emulsion in the polymer can be flexibly adjusted according to the strips, the emulsion is smeared on the BFRP cloth, then the construction of the water brushing stone, the dry sticky stone, the installation of the facing brick, the plastering and the like is carried out according to the regulations, the test is firstly carried out, and.
Description of the drawings:
1) when cement is added into the emulsion, a dispersant and a defoamer are also needed to be added, so that cement balling and foaming are avoided.
2) The coupling agent can promote the bonding with organic molecules and can promote the firm bonding with inorganic matters, the adding amount is about 1.5% of the original pulp of the emulsion adhesive, and the experiment is determined according to the manufacturer's instruction, for example, the coupling agent is silane coupling agent KH550, KH560, KH 570. If a good bonding effect can be achieved without adding a coupling agent, the coupling agent may not be added.
3) In the sticking test, the adhesive is prepared by using different adhesive raw materials and different mixing ratios in comparison and is used for different sticking parts, and the adhesive and the mixing ratio are preferably selected from the different sticking parts, which is not repeated in the specific implementation mode.
4) The raw materials of the adhesive which are fed into the field of each batch are tested and detected in advance, and the consignor and the supervision party can randomly check and detect in prefabrication and construction.
5) The following simple method for detecting the emulsion adhesive can be used for self-detection: detecting the elongation: the elongation of the dried film sheet is preferably not less than 8 times. Soaking the dried membrane in water for 48h, wherein the water absorption rate is preferably not more than 8%, and the weight of the membrane is not less than 100 g.

Claims (10)

1. An energy-saving heat-insulating wall and a roof, which comprises a base wall and an organic heat-insulating layer; it is characterized in that the material also comprises a non-combustible heat-insulating material; the organic heat preservation layer is arranged on the base wall, the non-combustible heat preservation material is arranged on the organic heat preservation layer, or the non-combustible heat preservation material and the composite heat preservation plate of the organic heat preservation layer are arranged on the base wall, and the thickness of the non-combustible heat preservation material is determined according to the fireproof requirement, so that the outer heat preservation wall body provided with the organic heat preservation layer and the non-combustible heat preservation material is formed.
2. The energy-saving heat-insulating wall and roof as claimed in claim 1, further comprising pre-embedded steel plates and high-strength durable fiber cloth, wherein the high-strength durable fiber cloth is basalt fiber cloth, abbreviated as BFRP cloth, or other fiber cloth capable of replacing BFRP cloth; the organic heat-insulating layer is an EPS plate, or when the organic heat-insulating layer is a hard-foam heat-insulating plate, tests prove that the organic heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the embedded steel plates comprise L-shaped embedded steel plates for corners of outdoor doors and windows and embedded steel plates installed at other positions of an outer wall, and the embedded steel plates are bonded with the EPS plates and the heat-insulating layers around the windows by using adhesives; the BFRP cloth is pasted on the surface of the non-combustible heat-insulating material, and also pasted on the side surface of a door and window opening and the non-combustible heat-insulating material on the side surface of a door and window opening, and pasted with the inner side base layer wall body.
3. The energy-saving heat-insulating wall and roof as claimed in claim 1 or 2, wherein the following fire-proof safety structure is adopted for the energy-saving heat-insulating wall, and is adopted according to the requirement:
1) the heat-insulating layer arranged around the door and window opening is a non-combustible heat-insulating material with a certain thickness;
2) the fireproof heat-insulating material is padded between the connecting piece and the embedded steel plate; when the outer wall attachments are installed, screws penetrate through the connecting piece for installing the outer wall attachments, the BFRP cloth, the fireproof heat-insulating material and the embedded steel plate to be fixed;
3) after the window is installed, smearing thermal insulation mortar or other non-combustible thermal insulation materials on BFRP cloth stuck on the inner side of the window chamber;
4) and heat insulating materials can be adhered to the back or two sides of the embedded steel plate.
4. An energy-saving heat-insulating wall and a roof are provided, which are energy-saving heat-insulating walls coated with adhesive outside the heat-insulating layer of the outer wall to be plastered by cement mortar, or energy-saving heat-insulating roofs coated with adhesive on the heat-insulating layer of a concrete roof panel to be cast in situ with a concrete protective layer of the roof; the heat-insulating layer comprises a base layer, an organic heat-insulating layer and a protective layer, and is characterized by also comprising an embedded steel plate; the base layer is a base layer wall or a concrete roof panel, the organic heat-insulating layer is an EPS board, or when the organic heat-insulating layer is a hard-foam heat-insulating layer, tests prove that the base layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the protective layer is a cement mortar protective layer outside the EPS board adhered on the base layer wall body, or the protective layer is a cast-in-place concrete protective layer adhered on the EPS board of the concrete roof panel; fixing the EPS boards on the base layer, wherein no vertically through gap exists between the EPS boards and the base layer wall body, and no vertically through gap exists between the EPS boards; the embedded steel plate is bonded and connected with the EPS plate of the outer wall by using an adhesive, the tensile bearing capacity generated by the bonding area between the embedded steel plate and the EPS plate is not less than the weight of the mounted outer wall attachment and the tensile force generated by the worst load combination value under the action of negative wind pressure, and certain safety reserve is required; coating an adhesive on the side surface of the EPS board of the roof to adhere the EPS side surfaces into a whole, coating a waterproof sealing material between gaps at the upper part of the EPS board of the roof, and bonding the gaps between the EPS board and a wall body or a structure of the roof to enable the EPS board to become a waterproof layer; coating an adhesive on an EPS board of an outer wall to bond the EPS board with a cement mortar protective layer, so that no communicated air flowing cavity exists inside and outside and on the side surface of the EPS board installed on the outer wall, and coating the adhesive on the EPS board of the roof to bond a cast-in-place concrete protective layer of the roof with the EPS board; the embedded steel plate is installed on the roof concrete protection layer and anchored with concrete, a roof structure is installed on the embedded steel plate, the EPS plate is installed on the tensile bearing capacity between the bonding area on the concrete roof panel and the EPS plate, the tensile bearing capacity of the embedded steel plate welded with the reinforcing mesh in the roof concrete protection layer is not less than the upward suction force of the roof cast-in-place concrete protection layer under the action of the load combination value of negative air pressure, the thrust of the roof structure subjected to wind is not less than, and the roof structure is safely reserved to a certain extent.
5. An energy-saving heat-insulating wall or a roof is a prefabrication method for producing and processing a precast concrete sandwich board or a precast concrete outer heat-insulating board by using a low-strength and low-price material as a side formwork batten; the prefabricated concrete sandwich panel comprises a prefabricated concrete sandwich wallboard and a prefabricated concrete sandwich roof panel, the prefabricated concrete sandwich wallboard is used for installing an assembled sandwich concrete shear wall, or a non-bearing assembled sandwich wall body of an installation framework structure, or an indoor separated heating partition wall, and the prefabricated concrete sandwich roof panel is used for installing an assembled sandwich roof; the precast concrete outer insulation board is used for installing an outer insulation concrete shear wall or an outer insulation non-bearing wall body of an installation frame structure; the precast concrete sandwich panel comprises inner leaf concrete, a heat insulation layer and an outer leaf concrete or roof concrete protection layer; the precast concrete outer insulation board comprises inner leaf concrete, an insulation layer and an outer protection layer, and the thickness of the outer protection layer meets the requirement of fire hazard non-spread; the inner leaf concrete and the outer leaf concrete of the precast concrete sandwich heat-insulation wall board for the flexural member are common concrete or light aggregate concrete, and the inner leaf concrete and the outer leaf concrete of the precast concrete sandwich heat-insulation wall board for the partition wall are common light aggregate concrete or foam concrete; the heat-insulating layer of the precast concrete sandwich panel or the precast concrete outer heat-insulating plate for the outer wall and the roof is an EPS (expandable polystyrene) plate, or the heat-insulating layer adopts a hard foam heat-insulating plate, and tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, the bonding interface is not damaged, and the durability meets the requirements; the heat insulation layer of the precast concrete sandwich panel for the indoor separating heating partition wall is an EPS (expanded polystyrene) plate or a hard foam heat insulation plate; the side formwork strips are adhered to a platform by using an adhesive and serve as the side formwork strips of the ring edges of the precast concrete sandwich panel or the precast concrete outer insulation board; when the precast concrete sandwich board or the precast concrete outer insulation board is produced and processed, the inner leaf concrete, the organic insulation layer and the outer leaf concrete or the roof concrete protection layer or the outer protection layer are bonded into a whole by using an adhesive.
6. The method according to claim 5, wherein the prefabricated processing method for producing and processing the prefabricated concrete sandwich panel or the prefabricated concrete external insulation board comprises the following steps:
1) the general regulations in the building industry are required to be met;
2) deeply designing the precast concrete sandwich panel and the precast concrete outer insulation board according to design requirements, determining the division of the precast concrete sandwich panel and the precast concrete outer insulation board, and compiling a component processing diagram; marking windows for installing non-combustible heat insulation materials, and marking embedded positions and specifications for installing embedded steel plates and installing embedded hoisting pieces on drawings of a precast concrete sandwich plate and a precast concrete outer heat insulation plate of an outer wall; the embedded steel plates are provided with a window outdoor corner L-shaped embedded steel plate and embedded steel plates arranged at other positions of the outer wall, the specification of the L-shaped embedded steel plate meets the construction convenience requirement of installing attachments at the periphery of the window conveniently, the L-shaped embedded steel plate is adhered to the non-combustible heat-insulating material at the window side and is anchored with the outer leaf concrete, the embedded steel plates arranged at other positions of the outer wall are anchored with the outer leaf concrete, or the embedded steel plates arranged at other positions of the outer wall are adhered to the EPS plates of the prefabricated concrete outer heat-insulating plate by using an adhesive, or the L-shaped embedded steel plate is adhered to the non-combustible heat-insulating material of the window and the EPS plates in the outer protective layer by using the adhesive after the prefabricated concrete sandwich plate and the prefabricated concrete outer; the outer surface of the embedded steel plate is flat with the outer leaf concrete, or the outer surface of the embedded steel plate is flat with an EPS plate of the precast concrete outer insulation board;
3) the test needs to be carried out on each layer by layer bonding and the mounting of the embedded steel plates on the EPS plate, and the loading test is carried out on the precast concrete sandwich plate of the outer wall or the roof according to the simple support plate:
firstly, carrying out a bonding test on cast-in-place concrete and an EPS board to ensure that the EPS board is damaged but not a bonding interface is qualified;
sticking the pre-embedded steel plate to the EPS plate by using an adhesive in advance to perform a bonding test, and sticking a test strip with a window non-combustible heat-insulating material to damage the pre-embedded steel plate on the EPS plate and the non-combustible heat-insulating material, wherein the non-combustible heat-insulating material is not qualified in a bonding interface;
thirdly, on the basis of qualified bonding test, a normal section bending test and an oblique section shearing resistance test are carried out on the precast concrete sandwich boards of non-bearing outer walls or roofs with different spans and different section heights according to the simple support plates, and the detection quantity of the precast components is in accordance with the specification; the thickness of the EPS board and the total thickness of the member are determined according to the combined values of different climatic zones and different horizontal loads during the test, on the premise that the thickness of the inner leaf concrete and the outer leaf concrete meets the fire endurance limit, the height of the section of the precast concrete sandwich board is changed by changing the thickness of the EPS board, and the rigidity and the effective bending height of the member are adjusted; the stress performance of the detected member is in accordance with mechanics and concrete structure theories, if the stress performance of the detected member is not in accordance with whether layered bonding is in a problem or not, the load data, deflection and cracks applied each time are recorded until test data such as damage and the like are required to be met, data such as video and the like are available, the load when the deflection of the non-bearing external wall panel reaches the span of 1/250 is recorded, the load when the prefabricated concrete sandwich roof panel reaches the allowable deflection limit value is recorded, a member selection table is made for design and selection, and the member selection table is detected by legal units on the basis of the self-detection of a prefabricated enterprise, and the member selection table is preferably used as a type detection project;
4) the high-strength durable fiber cloth is basalt fiber cloth, BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; when the outer leaf concrete used for installing the outer wall or the BFRP cloth is pasted on the surface of the outer protective layer of the precast concrete outer insulation board, the pasting test of the BFRP cloth needs to be carried out in advance:
carrying out a BFRP cloth and concrete bonding test: bonding BFRP cloth strips with a certain width with concrete by using an adhesive for a certain length, wherein the color of the BFRP cloth should be deepened to indicate that the BFRP cloth is bonded on the whole area, and carrying out parallel tensile strength detection after curing; the bonding test data is not less than a certain number, the average value of the test results is taken, if the average value exceeds 10% of the test data, the final effective number is not less than the specified number; thereby determining the width of the BFRP cloth required to be adhered to the base wall when the door and window meet the shearing resistance bearing capacity required by the design; on the basis of qualified self-inspection of construction enterprises, delivering to a legal unit for inspection; if the design value of the tensile strength of the BFRP cloth does not meet the requirement of the shearing resistance bearing capacity, the number of the adhered BFRP cloth layers should be increased, certain safety reserve should be provided, and the adhering range should meet the design regulation;
and secondly, carrying out a bonding test between BFRP fabrics: mutually sticking BFRP cloth strips with certain width for certain length, wherein the color of the BFRP cloth should deepen to indicate that the BFRP cloth is stuck in the whole area, carrying out parallel tensile strength detection after the BFRP cloth is maintained, and determining the parallel tensile strength of mutual lap joint sticking between the BFRP cloth so as to determine the lap joint sticking width required by the BFRP cloth meeting the strength requirements of lap joint sticking and the like, and delivering the cloth to a legal unit for detection on the basis of qualified self-check of construction enterprises; the test data is not less than a certain number, the average value of the test results is taken, if the test data exceeds 10 percent of the test data, the final effective number is not less than the specified number; the test result, the used adhesive and the mixing ratio are provided for a construction installation unit, otherwise, the construction installation unit needs to perform the two tests again before the BFRP cloth is stuck and installed on the inner leaf concrete of the door and window opening, and the test result is influenced by different adhesives and mixing ratios;
5) when the concrete sandwich board or the outer insulation board of the precast concrete is precast, the paving sequence of each layer of materials on the precast platform from bottom to top is different according to the equipment conditions of a precast workshop and is conveniently determined according to the prefabrication;
6) preparing an organic heat-insulating plate and an embedded steel plate which meet the design requirements in advance;
firstly, the specification of the organic heat-insulation board is required to meet the requirements of step-shaped lap joint pasting or adhesion requirement determination at the vertical seam of a wall body or the seam of a roof panel, the flatness is required to meet the requirements, the seams of the EPS boards of the outer wall and the roof are reduced as much as possible, if the seams are connected by adopting a step-shaped lap joint coating adhesive or fixed by plastic bolts, or the seams of the EPS boards are integrally adhered by coating or scraping the adhesive when the seams are planar, and the adhesion reliability is ensured; the EPS boards of the precast concrete sandwich board can be in a step shape at the joint of the adjacent board edges, and are used for lap joint and adhesion when the precast concrete sandwich board is installed on a main body structure, and can also be used for mutual compaction and adhesion when an adhesive is coated or scraped during plane installation; the EPS boards in the prefabricated concrete sandwich roof board are required to be mutually bonded on the side surfaces of the joints, waterproof sealing materials are required to be coated on the gaps at the upper parts of the joints of the EPS boards for two times for waterproof sealing, and the waterproof sealing materials are coated 2 times after the 1 st drying, so that the waterproof sealing reliability of the joints is ensured; when the concrete sandwich board is prefabricated, anchoring the L-shaped embedded steel plate and the rest embedded steel plates of the outer wall with the outer leaf concrete, adhering the L-shaped embedded steel plate with a non-combustible heat-insulating material on the side surface of a door window, and leveling the outer surface of the embedded steel plate with the outer leaf concrete; when the concrete outer insulation board is prefabricated, the L-shaped embedded steel plate and the rest of the embedded steel plates of the outer wall can be bonded with the EPS board by using an adhesive, and can be bonded with a non-combustible insulation material on the side surface of a door window, the EPS board is placed on a platform after the adhesive bonded with the embedded steel plates is stable for producing and processing the prefabricated concrete outer insulation board, the corner L-shaped embedded steel plate and the non-combustible insulation material of the window can be bonded with the surface of the EPS board in the outer protective layer by using the adhesive after the prefabricated concrete outer insulation board is cured, and the outer surface of the embedded steel plate is flat with the EPS board in the outer protective layer;
secondly, forming holes on the EPS boards at certain intervals;
7) adhering and mounting a side formwork batten made of low-strength and cheap materials on a prefabricating platform, and checking whether the dimension error of a prefabricated part is controlled within an allowable range;
8) installing a reinforcing mesh and an embedded steel plate or an embedded hoisting piece in the side formwork lath, inserting the external reinforcing steel bar at the joint into the side formwork lath for interconnection during construction site installation, welding and anchoring the embedded steel plate or the embedded hoisting piece and the concrete internal reinforcing mesh of the outer leaf or/and the inner leaf, or bonding and fixing the embedded steel plate and the EPS plate;
9) pouring outer leaf concrete or an outer protective layer or inner leaf concrete, vibrating and leveling the poured concrete or cement mortar to meet the thickness of the design requirement;
10) coating an adhesive on the prepared EPS board in the whole area, wherein the adhesive coating is full and should not be leaked or saturated, placing the EPS board which is perforated with holes and coated with the adhesive on the leveled concrete or outer protective layer, accurately placing the EPS board, rolling the EPS board, bonding the EPS board with the concrete below, and filling EPS strips or other heat preservation strips at the positions where the holes are formed in the EPS board;
11) coating an adhesive on the upper surface of the EPS board in a full area, wherein the adhesive coating is full in moisture and free from missing coating, laying a reinforcing mesh on the EPS board, installing an embedded steel plate or an embedded hoisting piece, or fixedly bonding the embedded steel plate and the EPS board, pouring inner leaf or outer leaf concrete or an outer protective layer when the adhesive is wet, and vibrating and flattening;
12) steam curing or natural curing is carried out on the precast concrete sandwich board or the precast concrete outer insulation board, and whether plastic films are paved on the exposed concrete surface for water preservation and curing or watering curing is carried out is determined according to requirements;
13) and (3) carrying out spot check or comprehensive check on the layering bonding reliability according to the following method, and selecting according to the requirement:
firstly, a precast concrete sandwich panel is lifted to a certain height by using a vertical steel bar or an embedded lifting piece at a lifting point at a certain height, and the precast concrete sandwich panel is shaken and falls suddenly without falling, deformation and damage;
secondly, local drilling is carried out, whether each layer is bonded or not is checked through an endoscope, then the EPS board is plugged, and two sides are coated with adhesive and plastered for plugging;
and thirdly, sampling and checking the non-bearing precast concrete sandwich plates or the outer precast concrete insulation plates which exceed a certain number, loading according to the simple support plates, and if the deformation does not exceed an allowable value when the load reaches a design standard value, the deformation of the precast member meets the requirement, otherwise, the precast member is reprocessed for checking reasons.
7. An energy-saving heat-insulating wall and a roof are a precast concrete sandwich panel, and an assembled sandwich outer wall, an indoor separated heating partition wall or an assembled sandwich roof panel of an installation frame structure are installed by using the precast concrete sandwich panel; the precast concrete sandwich panel comprises inner leaf concrete, a heat insulation layer, outer leaf concrete of an outer wall or outer leaf concrete of a roof; the heat insulation layer is an EPS plate, or when the heat insulation layer is a hard foam heat insulation plate, the heat insulation layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, the durability meets the requirement, or when the heat insulation layer is used for installing an indoor partition heating partition wall, the EPS plate can be used as the heat insulation layer, and the hard foam heat insulation plate can be used; and (3) bonding and connecting the inner leaf concrete, the heat-insulating layer and the outer leaf concrete layer by using an adhesive to form a prefabricated autoclaved aerated concrete sandwich board and a sandwich board formed by compounding the prefabricated autoclaved aerated concrete and common concrete, which are collectively referred to as autoclaved aerated concrete sandwich boards for short.
8. An energy-saving heat-insulating wall body and a roof are disclosed, wherein the energy-saving heat-insulating wall body is a semi-finished heat-insulating plate of autoclaved aerated concrete and a semi-assembled sandwich concrete wall which is formed by bonding and compositely installing the semi-finished heat-insulating plate of the autoclaved aerated concrete and cast-in-place inner leaf concrete on a construction site; or bonding the semi-finished product insulation board of the autoclaved aerated concrete and the cast-in-place inner leaf concrete on a prefabricated platform to form a prefabricated concrete sandwich wallboard, and then installing the prefabricated concrete sandwich wallboard into a fully-assembled sandwich concrete wall; the autoclaved aerated concrete semi-finished product insulation board comprises an insulation layer and high-strength durable fiber cloth; the high-strength durable fiber cloth is basalt fiber cloth, BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth, and is characterized by also comprising outer leaf concrete of an autoclaved aerated concrete slab; when the heat-insulating layer is an EPS plate or the heat-insulating layer is a hard-foam heat-insulating plate, tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; coating or scraping an adhesive to bond the EPS boards and the outer leaf concrete of the autoclaved aerated concrete board, and coating or scraping the adhesive to adhere the BFRP cloth on the outer leaf concrete of the autoclaved aerated concrete board to form an autoclaved aerated concrete semi-finished product insulation board; or placing the semi-finished product insulation board on a prefabricated platform, coating an adhesive on the EPS board of the semi-finished product insulation board, and pouring inner leaf concrete to form the prefabricated concrete sandwich wallboard.
9. An energy-saving heat-insulating wall body and a roof are disclosed, wherein the energy-saving heat-insulating wall body is a semi-finished prefabricated heat-insulating plate, the semi-finished prefabricated heat-insulating plate is installed on a base layer wall body at a construction site to perform external wall external heat insulation, and is installed into a semi-fabricated concrete external heat-insulating energy-saving wall body, or the semi-finished prefabricated heat-insulating plate and poured concrete are bonded and compounded on a prefabricated platform to form a prefabricated concrete heat-insulating wall plate, and the prefabricated concrete heat-insulating wall plate is installed into an assembled concrete external heat-insulating energy-saving wall body; the semi-finished prefabricated heat insulation board comprises a heat insulation layer and high-strength durable fiber cloth, and is characterized by also comprising an embedded steel plate; the high-strength durable fiber cloth is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; when the heat-insulating layer is an EPS plate or is a hard foam heat-insulating plate or other non-combustible heat-insulating plates, tests prove that the heat-insulating layer has the capability of adapting to deformation in long-term use, a bonding interface is not damaged, and the durability meets the requirements; the embedded steel plates comprise window corner L-shaped embedded steel plates and embedded steel plates at the rest positions of the outer wall; mounting the L-shaped embedded steel plate on the corner of a door and window opening by using an adhesive to be bonded with the EPS plate, and bonding the L-shaped embedded steel plate with the non-combustible heat-insulating material of the door and window opening, and mounting the embedded steel plate on the EPS plate by using the adhesive at a position where an external wall attachment is required to be mounted; and adhering the BFRP cloth to the EPS board by using an adhesive to form a semi-finished prefabricated heat-insulation board which is bonded into a whole by using the BFRP cloth and is provided with an embedded steel plate.
10. An energy-saving heat-insulating wall body and a roof, wherein the energy-saving heat-insulating wall body comprises a base layer wall body, a non-combustible heat-insulating layer material and high-strength durable fiber cloth; the high-strength durable fiber cloth is basalt fiber cloth, called BFRP cloth for short, or other fiber cloth capable of replacing the BFRP cloth; installing a non-combustible heat-insulating material on a base wall; adhering BFRP cloth to the surface of the non-combustible heat-insulating material by using an adhesive, adhering the BFRP cloth to the side surface of a door or window opening, adhering the BFRP cloth to the non-combustible heat-insulating material, adhering the BFRP cloth to an inner side base wall, or fixing the BFRP cloth and the non-combustible heat-insulating material to the base wall by using a plastic anchor bolt; the method is characterized in that the bonding width of the BFRP cloth and the wall body of the door window side base layer is not less than a specified value, and is not less than the shearing force borne by the design calculation window side and acts on the BFRP cloth, the tensile bearing capacity required by the BFRP cloth is increased, if the design value of the tensile strength of the BFRP cloth does not meet the shearing resistance bearing capacity, the number of layers of the bonded BFRP cloth is increased, and certain safety reserve is provided.
CN202011029252.9A 2020-06-15 2020-09-27 Energy-saving heat-insulating wall and roof Pending CN111945928A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021253808A1 (en) * 2020-06-15 2021-12-23 吴淑环 Building technique for low-carbon society in high-technology era
CN115641010A (en) * 2022-12-08 2023-01-24 金乡县恒业商贸有限公司 Land supervision management system based on satellite monitoring technology
CN115641010B (en) * 2022-12-08 2023-04-07 金乡县恒业商贸有限公司 Land supervision management system based on satellite monitoring technology

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