CN115324273A - Prefabricated building structure-heat preservation-decoration integrated composite external wall panel and preparation method thereof - Google Patents

Prefabricated building structure-heat preservation-decoration integrated composite external wall panel and preparation method thereof Download PDF

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Publication number
CN115324273A
CN115324273A CN202211087892.4A CN202211087892A CN115324273A CN 115324273 A CN115324273 A CN 115324273A CN 202211087892 A CN202211087892 A CN 202211087892A CN 115324273 A CN115324273 A CN 115324273A
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parts
wall panel
cement
external wall
heat
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Inventor
赵振波
郑娟荣
范家俊
王迎
栗海玉
陈云贺
赵得银
姜伟
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Zhengzhou Technology University High Technology Technology Co ltd
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Zhengzhou Technology University High Technology Technology Co ltd
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Priority to CN202211087892.4A priority Critical patent/CN115324273A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • B28B11/245—Curing concrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B13/00—Feeding the unshaped material to moulds or apparatus for producing shaped articles; Discharging shaped articles from such moulds or apparatus
    • B28B13/02—Feeding the unshaped material to moulds or apparatus for producing shaped articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
    • B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
    • B28B23/022—Means for inserting reinforcing members into the mould or for supporting them in the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
    • B28B7/384—Treating agents
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, 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
    • E04B1/78—Heat insulating elements
    • E04B1/80—Heat insulating elements slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • E04B1/941—Building elements specially adapted therefor
    • E04B1/942—Building elements specially adapted therefor slab-shaped
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
    • E04C5/02—Reinforcing elements of metal, e.g. with non-structural coatings of low bending resistance
    • E04C5/04—Mats
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F13/00—Coverings or linings, e.g. for walls or ceilings
    • E04F13/07—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor
    • E04F13/08—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements
    • E04F13/0875—Coverings or linings, e.g. for walls or ceilings composed of covering or lining elements; Sub-structures therefor; Fastening means therefor composed of a plurality of similar covering or lining elements having a basic insulating layer and at least one covering layer
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/80—Optical properties, e.g. transparency or reflexibility
    • C04B2111/82—Coloured materials
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/30—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values
    • C04B2201/32—Mortars, concrete or artificial stone characterised by specific physical values for heat transfer properties such as thermal insulation values, e.g. R-values for the thermal conductivity, e.g. K-factors
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2290/00—Specially adapted covering, lining or flooring elements not otherwise provided for
    • E04F2290/04—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire
    • E04F2290/045—Specially adapted covering, lining or flooring elements not otherwise provided for for insulation or surface protection, e.g. against noise, impact or fire against fire
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90—Passive houses; Double facade technology

Abstract

The invention belongs to the technical field of building heat-insulating materials, and particularly relates to a prefabricated building structure-heat-insulating-decorating integrated composite external wall panel and a preparation method thereof. Therefore, the prefabricated building structure-thermal insulation-decoration integrated composite external wall panel has good weather resistance and can have the same service life as a building under the condition of meeting the requirements of structural mechanical property and decoration.

Description

Prefabricated building structure-heat preservation-decoration integrated composite external wall panel and preparation method thereof
Technical Field
The invention belongs to the technical field of building heat-insulating materials, and particularly relates to a prefabricated building structure-heat-insulating-decorating integrated composite external wall panel and a preparation method thereof.
Background
The prefabricated building structure-heat preservation integrated product is a novel building energy-saving product widely popularized by China. The construction of high-quality steel structure houses is actively promoted, and public buildings such as schools and hospitals are encouraged to preferentially adopt steel structures. At present, the steel structure-thermal insulation integrated external wall panel is mainly a concrete sandwich composite wall panel and a light external wall thermal insulation integrated composite board. The concrete sandwich composite wall board is a heat-insulating composite wall body formed by pouring concrete on two sides of a steel wire mesh frame (a steel bar mesh frame welded by 2 layers of steel bars, and the middle of the steel wire mesh frame is welded by three-dimensional oblique-insertion steel bars after a heat-insulating layer (mainly an EPS board) is sandwiched). The light external wall heat-insulating integrated composite board is formed by combining a prefabricated high-fiber cement board and a sandwich heat-insulating layer (generally formed by combining organic and inorganic multilayer heat-insulating layers), bonding materials of all layers together through a bonding agent (generally an organic bonding agent) on site, and then manufacturing the light external wall composite heat-insulating board through reinforcing steel bars (steel pipes, steel sheets and the like).
Problems with the above materials: the concrete sandwich composite wallboard is complex in construction, the heat insulation layer and the cement concrete outer protection layer are not like products, the thermal expansion coefficients are different, after the concrete sandwich composite wallboard is used for several years, the interface falls off to form two layers of skins, the heat insulation performance is reduced, and potential safety hazards exist. The light external wall heat-insulation integrated plate is manufactured on site and in a workshop type production mode, so that the product quality is difficult to control; in addition, the heat-insulating layer is formed by compounding inorganic and organic heat-insulating materials in a multi-layer manner (by using an organic binder), so that the long-term effectiveness of the heat-insulating effect is not guaranteed.
Disclosure of Invention
The invention aims to provide a prefabricated building structure-heat preservation-decoration integrated composite external wall panel and a preparation method thereof.
In order to achieve the purpose, the invention adopts the technical scheme that:
the prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises a decorative cement-based material outer protective layer and a sandwich heat preservation plate layer, wherein reinforcing steel bar net pieces are arranged in the decorative cement-based material outer protective layer, and are bound or welded and fixed through reinforcing steel bars penetrating through a heat preservation layer. The performance indexes of the heat insulation board in the composite external wall panel are as follows: the combustion grade is A2 grade, and the dry density is less than or equal to 150kg/m 3 The compressive strength is more than or equal to 0.3MPa, the tensile strength of the vertical plate surface is more than or equal to 0.1MPa, the volume water absorption is less than or equal to 6 percent, and the heat conductivity coefficient is less than or equal to 0.048W/(m.K); size: length × width × thickness =3000 × (1200 to 4500) × (60 to 300) (mm).
In a second aspect, a steel mesh is provided, and the steel mesh is made of one of a galvanized steel mesh and a stainless steel mesh; the diameter of a reinforcing steel bar in the reinforcing steel bar mesh is 3mm to 6mm, and the mesh opening of the reinforcing steel bar mesh is 50mm multiplied by 50mm, 60mm multiplied by 60mm and 70mm multiplied by 70mm.
In a third aspect, a decorative cement-based material is provided, which mainly comprises white sulphoaluminate cement, white building gypsum, slag micropowder, coarse whiting powder, a nano material, a water reducing agent, a defoaming agent, an alkali-resistant pigment, an aggregate and water; the slag micro powder is one of S105 grade and S95 grade; the granularity of the coarse whiting powder is more than or equal to 800 meshes; the aggregate is a mixture of clean river sand and aggregate crushed by limestone, and the maximum particle size of the aggregate is less than or equal to 5mm; the alkali-resistant pigment is one or more of iron oxide, titanium oxide, cobalt oxide and chromium oxide; the nano material is one of nano soil, nano silicon dioxide and nano calcium carbonate powder; the water reducing agent is a high-performance polycarboxylic acid water reducing agent, and the water reducing rate is more than 35%;
further, the decorative cement-based material comprises the following components in parts by mass: 150 to 200 parts of white sulphoaluminate cement, 25 to 35 parts of white building gypsum, 150 to 250 parts of slag micropowder, 30 to 60 parts of heavy calcium carbonate powder, 20 to 50 parts of alkali-resistant pigment, 3238 parts of nano material, 3262 parts of water reducing agent, 3262 parts of zxft, 0.005 to 0.01 part of defoaming agent, 400 to 600 parts of aggregate and 0.30 to 0.35 of water-powder ratio, wherein the water-powder ratio is the mass ratio of water to powdery material (cement, gypsum, slag powder, heavy calcium carbonate powder, nano material powder, water reducing agent and pigment powder); the decorative cement-based material has self-leveling fluidity when being uniformly stirred, and does not delaminate or bleed before initial setting; the compressive strength of the decorative cement-based material after curing is more than or equal to 30MPa, the breaking strength is more than or equal to 10MPa, and the bonding strength (the tensile strength of a vertical plate surface) with the insulation board is more than or equal to 0.12MPa; the freeze-thaw cycle times of the decorated cement-based material after curing are more than or equal to 200 times.
Preferably, the decorative cement-based material comprises the following components in parts by mass: 170 parts of white sulphoaluminate cement, 30 parts of white building gypsum, 200 parts of slag micro powder, 50 parts of heavy calcium carbonate powder, 40 parts of alkali-resistant pigment, 5 parts of nano material, 5 parts of water reducing agent, 0.008 part of defoaming agent, 500 parts of aggregate and 0.33 of water-powder ratio;
in a fourth aspect, a method for manufacturing an assembly type building structure-heat preservation-decoration integrated composite board is provided, which comprises the following steps:
step S01, cleaning: cleaning the steel vertical mold, coating a release agent, and fixing the mold;
s02, fixing the heat-insulation plate, the reinforcing mesh and the stressed reinforcing steel bars: on a flat ground outside a mold, preparing a heat insulation board with a specified size (the length of the heat insulation board is multiplied by the width of the heat insulation board is multiplied by the thickness of the heat insulation board is =3000 multiplied (1200 to 4500) multiplied by 60 to 300) (mm), clamping two sides (large sides) of the heat insulation board by a steel bar net (the distance between the steel bar net and the heat insulation board is about 10 mm), and then passing galvanized steel bars (the diameter is 4mm, and 5 heat insulation boards per square meter) through the thickness direction of the heat insulation board and binding or welding the galvanized steel bars with the steel bar net; meanwhile, the hoisting reinforcing steel bars and the reinforcing mesh are welded together;
step S03, hoisting the insulation board: hoisting the heat insulation boards with the reinforcing mesh fixed at the two sides into a vertical mold, wherein the distance between the heat insulation boards and the inner side of the vertical mold is 15 to 30mm;
step S04, pouring decorative cement-based materials: pouring the uniformly mixed decorative cement-based material into a gap between the inner side of the steel mould and the insulation board until the steel mould is filled with the decorative cement-based material;
step S05 maintenance: and (5) after the decorative cement-based material is finally solidified and meets the strength requirement, demoulding and naturally curing for 28 days to obtain a finished product.
The invention has the advantages that:
1. the prefabricated building structure-heat preservation-decoration integrated composite external wall panel is simple in manufacturing method, the high-efficiency water reducing agent is doped in the outer protective layer of the decoration cement-based material in the whole construction process, and the decoration cement-based material has self-leveling performance and high construction efficiency by adjusting the doping amount of the high-efficiency water reducing agent and the water-powder ratio (namely the doping amount of water);
2. in the decorative cement-based material outer protective layer of the prefabricated building structure-thermal insulation-decoration integrated composite external wall panel, as the nano material is doped, the pores among cement hydration products are filled, so that the compactness and impermeability of the decorative cement-based material are greatly improved, and the frost resistance is up to more than 200 times; the outer protective layer is provided with a reinforcing steel bar net piece and stressed reinforcing steel bars, so that the outer protective layer of the decorative cement-based material and the middle insulation board are connected into a whole without an interface or a weak interface, and the interface does not fall off in the using process; under the condition of meeting the requirements of structural mechanical property and decoration, the coating has good weather resistance and has the same service life as a building;
3. the prefabricated building structure-thermal insulation-decoration integrated composite external wall panel can adapt to different climatic conditions and different thermal insulation energy-saving requirements in China, namely the thickness of the thermal insulation panel can be 60 to 300mm.
Detailed Description
Example 1
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises a decorative cement-based material outer protective layer and a middle heat preservation plate layer, wherein a reinforcing steel bar net piece is arranged in the decorative cement-based material outer protective layer and is bound and fixed through reinforcing steel bars penetrating through a heat preservation layer; the main technical performance indexes of the insulation board are as follows: the combustion grade is A (A2) grade, and the dry density is 150kg/m 3 The compression strength is 0.70MPa, the tensile strength perpendicular to the plate surface is 0.15MPa, the volume water absorption is 3%, and the heat conductivity is 0.048W/(m.K); the thickness of the heat preservation plate is 300mm;
the decorative cement-based material comprises the following components in parts by mass: 170 parts of white sulphoaluminate cement, 30 parts of white building gypsum, 200 parts of slag micro powder, 50 parts of heavy calcium carbonate powder, 40 parts of alkali-resistant pigment, 5 parts of nano material, 5 parts of water reducing agent, 0.008 part of defoaming agent, 500 parts of aggregate and 0.33 of water-powder ratio;
a galvanized steel bar mesh, the diameter of the steel bar is 3mm, and the mesh opening size is 50mm multiplied by 50mm;
the manufacturing method of the assembly type building structure-thermal insulation integrated composite external wall panel comprises the following steps:
step S01, cleaning: cleaning the steel vertical mold, coating a release agent, and fixing the mold;
step S02, fixing the heat-insulation plate: preparing a heat-insulating plate with a specified size on a flat ground outside a mould, clamping two surfaces (large surfaces) of the heat-insulating plate by using a steel bar net (the distance between the steel bar net and the heat-insulating plate is about 10 mm), and then penetrating through the thickness direction of the heat-insulating plate by using galvanized steel bars (the diameter is 4mm, and 5 heat-insulating plate surfaces per square meter) and welding the galvanized steel bars with the steel bar net; meanwhile, the hoisting steel bars and the steel bar mesh sheets are welded together;
step S03, hoisting the insulation board: hoisting the heat insulation boards with the reinforcing mesh fixed on the two sides into a vertical mold, wherein the distance between the heat insulation boards and the inner side of the vertical mold ranges from 15 to 30mm;
step S04, pouring decorative cement-based materials: pouring the uniformly mixed decorative cement-based material into a gap between the inner side of the steel mould and the insulation board until the steel mould is filled with the decorative cement-based material;
step S05 maintenance: and (4) after the decorative cement-based material is finally solidified and meets the strength requirement, demoulding and naturally curing for 28 days to obtain a finished product.
Example 2
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following main technical performance indexes: the combustion grade is A (A2) grade, and the dry density is 138kg/m 3 The compression strength is 0.60MPa, the tensile strength perpendicular to the plate surface is 0.13MPa, the volume water absorption is 4%, and the heat conductivity is 0.047W/(m.K); the thickness of the heat-preservation plate is 240mm;
the decorative cement-based material comprises the following components in parts by mass: 150 parts of white sulphoaluminate cement, 25 parts of white building gypsum, 250 parts of slag micro powder, 60 parts of heavy calcium carbonate powder, 20 parts of alkali-resistant pigment, 3 parts of nano material, 3 parts of water reducing agent, 0.005 part of defoaming agent, 489 parts of aggregate and 0.35 of water-powder ratio;
a galvanized steel bar mesh, the diameter of the steel bar is 3mm, and the mesh opening size is 50mm multiplied by 50mm;
the manufacturing method of the assembly type building structure-thermal insulation integrated composite external wall panel comprises the following steps:
the composite exterior wall panel was fabricated in the same manner as in example 1.
Example 3
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following main technical performance indexes: the combustion grade is A (A2) grade, and the dry density is 135kg/m 3 The compression strength is 0.50MPa, the tensile strength perpendicular to the plate surface is 0.11MPa, the volume water absorption is 4.2%, and the heat conductivity is 0.046W/(m.K); the thickness of the inorganic plasticized microporous insulation board is 200mm;
the decorative cement-based material comprises the following components in parts by mass: 200 parts of white sulphoaluminate cement, 35 parts of white building gypsum, 150 parts of slag micro powder, 30 parts of heavy calcium carbonate powder, 50 parts of alkali-resistant pigment, 6 parts of nano material, 6 parts of water reducing agent, 0.01 part of defoaming agent, 523 parts of aggregate and 0.30 of water-powder ratio;
a stainless steel reinforcing bar net piece, the diameter of the reinforcing bar is 4mm, and the size of a net opening is 60mm multiplied by 60mm;
the manufacturing method of the prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following steps:
the composite exterior wall panel was fabricated in the same manner as in example 1.
Example 4
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following main technical performance indexes: the combustion grade is A (A2) grade, and the dry density is 133kg/m 3 The compression strength is 0.48MPa, the tensile strength perpendicular to the plate surface is 0.11MPa, the volume water absorption is 4.5%, and the heat conductivity is 0.045W/(m.K); the thickness of the inorganic plasticized microporous insulation board is 180mm;
the decorative cement-based material comprises the following components in parts by mass: 150 parts of white sulphoaluminate cement, 30 parts of white building gypsum, 200 parts of slag micro powder, 50 parts of heavy calcium carbonate powder, 40 parts of alkali-resistant pigment, 4 parts of nano material, 4 parts of water reducing agent, 0.006 part of defoaming agent, 522 parts of aggregate and 0.32 of water-powder ratio;
a stainless steel reinforcing bar net piece, the diameter of the reinforcing bar is 5mm, and the size of a net opening is 60mm multiplied by 60mm;
the manufacturing method of the prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following steps:
the composite exterior wall panel was fabricated in the same manner as in example 1.
Example 5
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following main technical performance indexes: the combustion grade is A (A2) grade, and the dry density is 130kg/m 3 The compression strength is 0.45MPa, the tensile strength perpendicular to the plate surface is 0.10MPa, the volume water absorption is 4.5%, and the heat conductivity is 0.044W/(m.K); the thickness of the inorganic plasticizing micropore insulation plate is 160mm;
the decorative cement-based material comprises the following components in parts by mass: 165 parts of white sulphoaluminate cement, 25 parts of white building gypsum, 150 parts of slag micro powder, 30 parts of heavy calcium carbonate powder, 22 parts of alkali-resistant pigment, 4 parts of nano material, 4 parts of water reducing agent, 0.006 part of defoaming agent, 600 parts of aggregate and 0.32 of water-powder ratio;
a galvanized steel bar mesh, the diameter of the steel bar is 6mm, and the mesh opening size is 70mm multiplied by 70mm;
the manufacturing method of the prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following steps:
the composite exterior wall panel was fabricated in the same manner as in example 1.
Example 6
A prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following main technical performance indexes: the combustion grade is A (A2) grade, and the dry density is 125kg/m 3 The compression strength is 0.40MPa, the tensile strength perpendicular to the plate surface is 0.10MPa, the volume water absorption is 5%, and the heat conductivity is 0.043W/(m.K); the thickness of the inorganic plasticized microporous insulation board is 100mm;
the decorative cement-based material comprises the following components in parts by mass: 180 parts of white sulphoaluminate cement, 30 parts of white building gypsum, 164 parts of slag micro powder, 40 parts of heavy calcium carbonate powder, 30 parts of alkali-resistant pigment, 3 parts of nano material, 3 parts of water reducing agent, 0.008 part of defoaming agent, 550 parts of aggregate and 0.33 of water-powder ratio;
a galvanized steel bar mesh, the diameter of the steel bar is 5mm, and the mesh opening size is 60mm multiplied by 60mm;
the manufacturing method of the prefabricated building structure-heat preservation-decoration integrated composite external wall panel comprises the following steps:
the composite member was produced in the same manner as in example 1.
According to the quick freezing method in GB/T50082-2009 test method standard for testing long-term performance and durability of common concrete, the quality loss rate of a finished test block (the periphery and the bottom of the test block are sealed by paraffin wax) is 1.5% after 200 times of freezing and thawing cycles, and the quality loss rate of a comparative sample (a decorative cement-based outer protection layer without a nano material) reaches 4.8% after 75 times of freezing and thawing cycles.

Claims (6)

1. The utility model provides a prefabricated building structure-heat preservation-decoration integration composite external wall panel which characterized in that: including decorating the heat preservation sheet layer of cement-based material outer protective layer and centre, the reinforcing bar net piece has been arranged in decorating the cement-based material outer protective layer, reinforcing bar net piece carries out ligature or welded fastening through the reinforcing bar that passes the heat preservation.
2. The prefabricated building structure-insulation-decoration integrated composite outer wall as claimed in claim 1Wallboard, its characterized in that: the performance indexes of the heat insulation board in the composite external wall panel are as follows: the combustion grade is A2 grade, and the dry density is less than or equal to 150kg/m 3 The compression strength is more than or equal to 0.3MPa, the tensile strength of the vertical plate surface is more than or equal to 0.1MPa, the volume water absorption rate is less than or equal to 6 percent, and the heat conductivity coefficient is less than or equal to 0.048W/(m.K); size: length × width × thickness =3000 × (1200 to 4500) × (60 to 300) (mm).
3. The prefabricated building structure-thermal insulation-decoration integrated composite external wall panel as claimed in claim 1, wherein: the material of the steel bar mesh in the outer protective layer is a galvanized steel bar mesh or a stainless steel bar mesh, the diameter of the steel bars in the steel bar mesh is 3-6 mm, and the mesh opening size of the steel bar mesh is one of 50mm multiplied by 50mm, 60mm multiplied by 60mm and 70mm multiplied by 70mm.
4. The prefabricated building structure-thermal insulation-decoration integrated composite external wall panel as claimed in claim 1, wherein: the decorative cement-based material outer protective layer is prepared from the following raw materials in parts by mass: 150 to 200 parts of white sulphoaluminate cement, 25 to 35 parts of white building gypsum, 150 to 250 parts of slag micropowder, 30 to 60 parts of triple superphosphate powder, 20 to 50 parts of alkali-resistant pigment, 3238 parts of nano material, 3262 parts of water reducing agent, 3262 parts of zxft, 0.005 to 0.01 part of defoaming agent, 400 to 600 parts of aggregate and 0.30 to 0.35 of water-powder ratio, wherein the water-powder ratio is the mass ratio of water to the powdery material cement.
5. The prefabricated building structure-thermal insulation-decoration integrated composite external wall panel as claimed in claim 4, wherein: the slag micro powder is one of S105 grade and S95 grade, and the granularity of the coarse whiting powder is more than or equal to 800 meshes; the aggregate is a mixture of clean river sand and aggregate crushed by limestone, and the maximum particle size of the aggregate is less than or equal to 5mm; the alkali-resistant pigment is at least one of iron oxide, titanium oxide, cobalt oxide and chromium oxide; the nano material is one of nano soil, nano silicon dioxide and nano calcium carbonate powder; the water reducing agent is a high-performance polycarboxylic acid water reducing agent, and the water reducing rate is more than 35%.
6. The method for preparing the prefabricated building structure-thermal insulation-decoration integrated composite external wall panel as claimed in any one of claims 1 to 5, wherein the method comprises the following steps:
s1, cleaning and fixing a die: cleaning the steel vertical mold, coating a release agent, and fixing the mold;
s2, fixing the heat-insulation plate, the reinforcing mesh and the stressed reinforcing steel bars: preparing a heat insulation plate with a specified size, clamping two sides of the heat insulation plate by using reinforcing steel bar meshes, controlling the distance between the reinforcing steel bar meshes and the heat insulation plate to be 10mm, penetrating reinforcing steel bars in the thickness direction of the heat insulation plate, binding or welding and fixing the reinforcing steel bar meshes with the reinforcing steel bar meshes, and welding hoisting reinforcing steel bars and the reinforcing steel bar meshes together;
s3, hoisting the insulation board: hoisting the heat insulation boards with the reinforcing mesh fixed at the two sides into a vertical mold, wherein the distance between the heat insulation boards and the inner side of the vertical mold is 15 to 30mm;
s4, pouring a decorative cement-based material: pouring the uniformly mixed decorative cement-based material into a gap between the inner side of the steel mould and the insulation board until the steel mould is filled with the decorative cement-based material;
s5, maintenance: after the decorative cement-based material is finally solidified and meets the strength requirement, demoulding and natural curing are carried out for 28 days, the compressive strength of the decorative cement-based material after curing is more than or equal to 30MPa, the flexural strength is more than or equal to 10MPa, and the bonding strength with the insulation board is more than or equal to 0.12MPa, thus obtaining the finished product.
CN202211087892.4A 2022-09-06 2022-09-06 Prefabricated building structure-heat preservation-decoration integrated composite external wall panel and preparation method thereof Pending CN115324273A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008019635A (en) * 2006-07-13 2008-01-31 Tesuku:Kk Moisture permeable outer wall structure of reinforced concrete outside insulation building, composite panel used and lower parting metal fitting
CN102173711A (en) * 2011-02-28 2011-09-07 武汉钢铁(集团)公司 High-volume slag self-leveling mortar
CN102454248A (en) * 2010-10-28 2012-05-16 中国建筑材料科学研究总院 Steel mesh fiber reinforced concrete composite external wall panel and preparation method thereof
CN108083754A (en) * 2017-12-21 2018-05-29 浙江帝耐美环保科技有限公司 A kind of modified cement-based self-leveling mortar
US20200240144A1 (en) * 2017-07-04 2020-07-30 Shandong University Thermal-insulated exterior wall boards, dedicated molds and making methods thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008019635A (en) * 2006-07-13 2008-01-31 Tesuku:Kk Moisture permeable outer wall structure of reinforced concrete outside insulation building, composite panel used and lower parting metal fitting
CN102454248A (en) * 2010-10-28 2012-05-16 中国建筑材料科学研究总院 Steel mesh fiber reinforced concrete composite external wall panel and preparation method thereof
CN102173711A (en) * 2011-02-28 2011-09-07 武汉钢铁(集团)公司 High-volume slag self-leveling mortar
US20200240144A1 (en) * 2017-07-04 2020-07-30 Shandong University Thermal-insulated exterior wall boards, dedicated molds and making methods thereof
CN108083754A (en) * 2017-12-21 2018-05-29 浙江帝耐美环保科技有限公司 A kind of modified cement-based self-leveling mortar

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