CN114790783A - Ultra-low energy consumption passive building rock wool belt outer wall heat insulation structure and construction process - Google Patents
Ultra-low energy consumption passive building rock wool belt outer wall heat insulation structure and construction process Download PDFInfo
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- CN114790783A CN114790783A CN202210485251.8A CN202210485251A CN114790783A CN 114790783 A CN114790783 A CN 114790783A CN 202210485251 A CN202210485251 A CN 202210485251A CN 114790783 A CN114790783 A CN 114790783A
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- 238000004321 preservation Methods 0.000 claims abstract description 43
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
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- 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
- E04B1/762—Exterior insulation of exterior walls
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- 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7625—Details of the adhesive connection of the insulation to the wall
-
- 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7629—Details of the mechanical connection of the insulation to the wall
-
- 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
- E04B1/762—Exterior insulation of exterior walls
- E04B1/7641—Elements for window or door openings, or for corners of the building
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
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Abstract
The invention relates to the technical field of building heat preservation, in particular to an ultra-low energy consumption passive building rock-cotton belt outer wall heat preservation structure and a construction process, which ensure the rock-cotton adhesion quality by innovatively using rock-cotton belts with stronger tensile strength and compressive strength and selecting a novel construction process, avoid the quality hidden dangers and the safety hidden dangers of later-stage outer wall cracking, leakage, falling and the like, and comprise a base wall, a leveling layer, a heat preservation layer, a metal bracket, an anchor bolt and anti-cracking mortar composite alkali-resistant glass fiber mesh cloth, wherein the leveling layer is arranged on the side surface of the base wall, the heat preservation layer is bonded on the outer side of the leveling layer, the heat preservation layer at least comprises two layers of rock-cotton belts, the metal bracket is embedded and installed at the splicing seam part of the rock-cotton belts at intervals, and can support the rock-cotton belts; the anti-crack mortar composite alkali-resistant glass fiber mesh cloth is laid on the outer side of the heat insulation layer, and the anchor bolt penetrates through the anti-crack mortar composite alkali-resistant glass fiber mesh cloth, the heat insulation layer and the leveling layer from outside to inside and is connected with the base wall.
Description
Technical Field
The invention relates to the technical field of building heat preservation, in particular to an ultra-low energy consumption passive building rock wool belt outer wall heat preservation structure and a construction process.
Background
In recent years, passive low-energy-consumption buildings are rapidly developed in China along with the implementation of national energy-saving and emission-reducing strategies and the improvement of the quality requirements of people living. Rock wool has gradually become the main thermal insulation material for passive low-energy-consumption buildings due to its good fire resistance. However, the application of the existing rock wool heat insulation system in the passive low-energy-consumption building is not mature, and related research is not complete, so that the construction methods of the rock wool heat insulation system of the passive low-energy-consumption building at the present stage are numerous, and potential safety hazards exist in part of the construction methods.
The construction thickness of the rock wool heat preservation of the common outer wall is generally 60-100 mm, and most of the rock wool heat preservation outer wall adopts 140Kg/m 3 The rock wool board is pasted. The construction heat preservation system is limited by the composition of materials of the construction heat preservation system, the heat preservation rock wool, the adhesive, the anchor bolt for fixing and the like do not form a system, and the whole construction quality of the heat preservation of the rock wool is poor. The incidence of quality defects such as cracking, leakage, falling off and the like of the outer wall is high.
This company research and development center project is high-rise public building of super thick rock wool external insulation passive form, and the outer wall wholly is 250mm thick heat preservation, and the local is 300 ~ 450mm thick A level heat preservation rock wool material, and the high efficiency outer wall heat preservation construction system of urgent need guarantees construction quality, avoids the potential safety hazard that the later stage exists.
Disclosure of Invention
In order to solve the technical problems, the invention provides an ultra-low energy consumption passive building rock wool belt external wall heat insulation structure and a construction process, wherein rock wool belts with strong tensile strength and compressive strength are innovatively used, a novel construction process is selected, rock wool adhesion quality is ensured, quality hidden dangers and potential safety hazards such as later-stage external wall cracking, leakage and falling are avoided, later-stage maintenance cost is reduced, and a representative ultra-thick external wall rock wool heat insulation ultra-low energy consumption building is built.
In order to realize the purpose, the invention adopts the following technical scheme:
the invention provides an ultra-low energy consumption passive building rock wool zone outer wall heat preservation structure which comprises a base layer wall body, a leveling layer, a heat preservation layer, metal brackets, anchor bolts and anti-crack mortar composite alkali-resistant glass fiber mesh cloth, wherein the leveling layer is arranged on the side surface of the base layer wall body, the heat preservation layer is bonded on the outer side of the leveling layer, the heat preservation layer at least comprises two rock wool zones, and the metal brackets are embedded at intervals in splicing parts of the rock wool zones and can support the rock wool zones; the anti-crack mortar composite alkali-resistant glass fiber mesh cloth is laid on the outer side of the heat insulation layer, and the anchor bolt penetrates through the anti-crack mortar composite alkali-resistant glass fiber mesh cloth, the heat insulation layer and the leveling layer from outside to inside and is connected with the base wall.
In one possible technical scheme, the rock wool strips of each layer are arranged in a staggered manner.
In one possible technical scheme, the metal bracket is L-shaped, the vertical surface of the metal bracket is used for being connected with a base layer wall, and the horizontal surface of the metal bracket is used for supporting the rock wool band.
In a possible technical scheme, a heat insulation gasket is arranged between the vertical surface and the leveling layer.
In a possible technical scheme, the anti-crack mortar composite alkali-resistant glass fiber gridding cloth is arranged in two layers, and the anchor bolt is connected between the two layers of the anti-crack mortar composite alkali-resistant glass fiber gridding cloth.
In one possible technical scheme, the anchor bolt comprises an expansion pipe, one end of the expansion pipe is provided with an expansion part, the inner side of the expansion pipe is provided with a connecting rod, the outer side of the expansion pipe, which is positioned at the connecting rod, is provided with an accommodating cavity, and the accommodating cavity is filled with a heat insulation material; the outer end of the containing cavity is connected with a plugging cap.
The invention provides a construction process for heat preservation of an outer wall of an ultra-low energy consumption passive building rock wool belt, which is realized according to any one of the heat preservation structures of the outer wall of the ultra-low energy consumption passive building rock wool belt, and comprises the following steps in sequence:
(1) the base wall is inspected and cleaned, the masonry wall is leveled by adopting mortar, and the surface of the concrete member is coated with an interface treating agent;
(2) the rock wool belt adhesive surface is solidified by adopting an interface agent surface layer;
(3) arranging installation anchor bolts and metal brackets according to different floor heights;
(4) pasting a first layer of rock wool belt;
(5) the outer side of the door and the window is provided with a door and window finished product connecting line;
(6) pasting a second layer of rock wool belt;
(7) sticking a third rock wool band on the local modeling part;
(8) and (5) filling joints of the rock wool strips, polishing and preparing protective surface layer mortar.
In the technical scheme, no metal bracket is arranged on the partition walls of the upper and lower windows of different floors in the step (3), and a row of metal brackets is arranged on each floor of the main wall surface.
In the technical scheme, the anchor bolts with different floor heights in the step (3) are different in quantity according to the unit area of the outer vertical surface.
Among the above-mentioned technical scheme, the paste area of first layer rock wool area and screed-coat is not less than 80% in step (4), the paste area of second layer rock wool area and first layer rock wool area is not less than 70% in step (6), the paste area of third layer rock wool area and second layer rock wool area is not less than 70% in step (7).
Compared with the prior art, the invention has the beneficial effects that: the volume weight of the selected external wall insulating layer is about 100Kg/m 3 The replacement bulk density of the pyroxene cotton belt is 140Kg/m 3 The transverse-silk rock wool boards are pasted in a layering way. The rock wool belt is a vertical silk rock wool belt formed by cutting a rock wool plate in a direction vertical to the fiber direction, so that the self load of the external heat-preservation rock wool is reduced, and the potential safety hazard is reduced; in addition, through experimental study, the bonding strength of the heat-insulating layer of the vertical-filament rock wool belt and the bonding mortar and the tensile strength of the heat-insulating layer of the vertical-filament rock wool belt and the anti-crack mortar are greater than the tensile strength of the vertical-filament rock wool belt, and the combined acting force of the self load of the heat-insulating layer of the vertical-filament rock wool belt and the horizontal wind load is smaller than the tensile strength value mentioned above; different from rock wool board construction, the bonding is used as an auxiliary and the anchoring is used as a mainThe method is characterized in that the rock wool strip construction mainly adopts adhesion and assists anchoring, the heat insulation layer at least comprises two layers of rock wool strips, and the adhesive sticking process is adopted for layering; the use of the metal bracket ensures that the rock wool does not slide before the mortar is solidified to influence the effective bonding area, and the anti-falling performance of the rock wool is more strengthened and improved through the fixing action of the anchor bolts with different floor heights and different specifications; in order to reduce the quality hidden troubles of outer wall cracking, leakage, falling and the like and ensure the construction quality, the invention reduces the adverse factors generated in the construction by matching the metal bracket, the anchor bolt and the anti-crack mortar composite alkali-resistant glass fiber gridding cloth on the basis of the rock wool belt bonding process, and finally forms the safe and efficient outer wall rock wool belt heat-preservation construction method through process quality control.
Through statistics, the volume weight is 100Kg/m 3 Compared with 140Kg/m of rock wool belt 3 The rock wool board with volume weight saves about 100 yuan per cubic meter of material cost averagely, the research and development center project of the embodiment is about 4500 cubic meters of rock wool, the cost is saved about 45 ten thousand yuan, the project is delivered to no relevant complaint of industry owners so far, and the social benefit is huge.
Drawings
FIG. 1 is a schematic view of the heat insulation structure of the external wall of the present invention in a stone curtain wall;
FIG. 2 is a schematic view of the external wall insulation structure at the external eaves of the present invention;
FIG. 3 is a schematic view of a portion A of FIG. 2;
FIG. 4 is a schematic view of the connection structure of the metal bracket and the substrate wall;
FIG. 5 is a schematic view of a metal bracket;
FIG. 6 is a schematic view of the anchor;
FIG. 7 is a schematic view of an arrangement of anchor bolts according to different floor heights;
FIG. 8 is a schematic view of an external wall insulation structure at a large external corner position;
FIG. 9 is a schematic view of the installation of the rock wool strip in a large external corner position;
FIG. 10 is a schematic view of a rock wool zone arrangement in a steep angle position;
FIG. 11 is a schematic view of exterior wall insulation of the paint finish;
FIG. 12 is a schematic view of the insulation structure of partially shaped columns with thickness of 300mm and 350 mm;
FIG. 13 is an enlarged view of a portion B of FIG. 12;
FIG. 14 is a schematic view of a heat-insulating structure of a partially-shaped column having a thickness of 380 mm;
fig. 15 is a partial enlarged view of portion C of fig. 14;
FIG. 16 is a schematic view of a heat-insulating structure of a partially-shaped column with a gable portion having a thickness of 450 mm;
reference numerals are as follows: 1-a base layer wall body; 2-leveling layer; 3, insulating layer; 31-first layer rock wool band; 32-second layer rock wool band; 33-third layer rock wool zone; 4-a metal bracket; 41-vertical plane; 42-horizontal plane; 43-a heat-insulating spacer; 5, anchor bolts; 51-expanding the tube; 52-an expansion part; 53-connecting rods; 54-a heat insulating material; 55-a plugging cap; 6-anti-crack mortar is compounded with alkali-resistant glass fiber mesh cloth; 7-foaming glue.
Detailed Description
The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1 and 2, the ultra-low energy consumption passive building rock wool belt outer wall heat insulation structure comprises a base layer wall body 1, a leveling layer 2, a heat insulation layer 3, metal brackets 4, anchor bolts 5 and anti-crack mortar composite alkali-resistant glass fiber mesh fabric 6, wherein the leveling layer 2 is arranged on the outer side surface of the base layer wall body 1, the heat insulation layer 3 is bonded on the outer side of the leveling layer 2, the heat insulation layer 3 at least comprises two rock wool belts, and the metal brackets 4 are embedded at intervals in the splicing parts of the rock wool belts and can support the rock wool belts; the anti-crack mortar composite alkali-resistant glass fiber mesh cloth 6 is laid on the outer side of the heat preservation layer 3, and the anchor bolt 5 penetrates through the anti-crack mortar composite alkali-resistant glass fiber mesh cloth 6, the heat preservation layer 3 and the leveling layer 2 from outside to inside and is connected with the base layer wall body 1.
Aiming at the construction quality problem of the ultra-thick rock wool external insulation passive high-rise public building, the invention researches the performance of the insulation material and the related construction method, and most of the existing external wall external insulation is double-layer graphite polystyrene board with thicknessThe fire hazard of the organic heat insulation material for external heat insulation of the external wall exists in material storage before external heat insulation construction, cross operation in construction and the whole building life after the external heat insulation construction, and the potential safety hazard is long-term; in some building projects, composite rock wool boards are used as heat-insulation main materials, the volume weight of the rock wool boards is large, the load of external heat-insulation rock wool is heavy, the construction difficulty is high, and the problems of poor construction quality and high occurrence rate of quality defects such as cracking, leakage and falling of external walls exist; the volume weight of the outer wall heat-insulating layer 3 is about 100Kg/m 3 The replacement volume weight of the mulliite cotton tape is 140Kg/m 3 The transverse-silk rock wool boards are pasted in a layering way. The rock wool belt is a vertical silk rock wool belt formed by cutting a rock wool plate in a direction vertical to the fiber direction, so that the self load of the external heat-preservation rock wool is reduced, and the potential safety hazard is reduced; in addition, through experimental study, the bonding strength between the vertical-fiber rock wool belt heat-insulating layer and the bonding mortar and the tensile strength between the vertical-fiber rock wool belt heat-insulating layer and the anti-crack mortar are greater than the tensile strength of the vertical-fiber rock wool belt, and the combined acting force of the self load of the vertical-fiber rock wool belt heat-insulating layer and the horizontal wind load is less than the tensile strength value described above, so that the rock wool belt has stronger tensile strength and compressive strength, and better wind load resistance is realized; different from the method that the rock wool board construction is mainly bonded and anchored, the rock wool belt construction of the invention is mainly bonded and anchored, the heat-insulating layer 3 at least comprises two layers of rock wool belts, and the gluing process is adopted for layering; the use of the metal bracket ensures that the rock wool does not slide before the mortar is solidified and the effective bonding area of the rock wool is influenced, and the anti-falling performance of the rock wool is further consolidated and improved through the fixing action of anchor bolts with different floor heights and different specifications and quantities; in order to reduce the hidden quality troubles of outer wall cracking, leakage, falling off and the like and ensure the construction quality, the invention reduces the adverse factors generated in the construction by matching the metal bracket, the anchor bolt and the anti-crack mortar composite alkali-resistant glass fiber gridding cloth on the basis of the bonding process of the rock wool belt and controlling the process quality,finally, a safe and efficient outer wall rock wool belt heat preservation construction method is formed.
As a preferred embodiment of the present invention, as shown in fig. 8 and 10, rock wool tapes of different thickness specifications are laminated and staggered by using an adhesive, so that not only is the requirement of local molding ensured, but also the rock wool tapes are effectively combined with an external window to block a cold and hot bridge and ensure the air tightness of the external window.
As shown in fig. 3 to 5, the metal bracket 4 is L-shaped, and the vertical surface 41 of the metal bracket is used for connecting with the substrate wall 1, and the horizontal surface 42 is used for supporting the rock wool band; preferably, a heat insulation pad 43 is provided between the vertical surface 41 and the leveling layer 2 to further enhance the heat insulation performance.
In the invention, the anti-crack mortar composite alkali-resistant glass fiber gridding cloth 6 can be arranged into one layer or two layers, for example, as shown in figure 1, a single-layer anti-crack mortar composite alkali-resistant glass fiber gridding cloth 6 is adopted for the stone curtain wall veneer, and the thickness of the anti-crack mortar is 3-5 mm; as shown in figure 11, the coating veneer heat preservation adopts two layers of anti-crack mortar compounded alkali-resistant glass fiber mesh cloth 6, the thickness of the anti-crack mortar is 5-7mm, and an anchor bolt 5 is connected between the two layers of anti-crack mortar compounded alkali-resistant glass fiber mesh cloth 6.
As shown in fig. 6, as a preferred embodiment of the present invention, the anchor bolt 5 includes an expansion tube 51, one end of the expansion tube 51 is provided with an expansion portion 52, a connecting rod 53 is provided inside the expansion tube 51, an accommodating cavity is provided outside the connecting rod 53 of the expansion tube 51, and the accommodating cavity is filled with a heat insulating material 54; the outer end of the accommodating cavity is connected with a plugging cap 55; preferably, the connecting rod 53 can be steel nails with different lengths, and the length of the connecting rod 53 is determined according to different thicknesses of the heat-insulating layer; the heat insulating material 54 may be made of polyurethane to block heat bridges; the plugging cap 55 is preferably made of a steel plate.
The invention discloses an ultralow-energy-consumption passive building rock wool out-of-band wall heat preservation construction process, which is realized according to the ultralow-energy-consumption passive building rock wool out-of-band wall heat preservation structure, and comprises the following steps of:
(1) inspecting the base layer wall 1 and cleaning the base layer wall, leveling the masonry wall by adopting mortar, and brushing an interface treating agent on the surface of the concrete member;
the base wall body of the embodiment of the invention is of a frame shear wall structure, the outer wall is filled with more block walls, and in order to reduce the problem that the plastering leveling mortar strength of the outer wall is not fused with the adhesive strength, only the block walls are subjected to thin plastering treatment by adopting the matched interface mortar, and the interface agent is sprayed on the large surface of the cleaned concrete wall surface, so that the combination degree of the adhesive and the base wall body is enhanced, and the adhesion of a heat-insulating layer is ensured to meet the design calculation requirement;
(2) the adhesive surface of the rock wool belt is solidified by adopting an interface agent surface layer;
in order to increase the actual effective sticking area of the rock wool belt, the rock wool belt is fully smeared with an interface agent on the inner surface and the outer surface of the upper wall, preferably, the interface agent is bonding mortar, more preferably, the surface of the rock wool belt is pulled into a strip shape by adopting a special sawtooth trowel after being coated with the mortar, and then is tightly stuck with the base layer by pressing and rubbing;
(3) arranging installation anchor bolts 5 and metal brackets 4 according to different floor heights;
wherein, the installation requirement of crab-bolt is as follows:
the depth of the anchor bolt entering the base wall is required, and the depths of the air-entraining block and the concrete are not consistent; the aerated block is not less than 65mm, and the concrete is not less than 50 mm;
according to the heat-insulating layers 3 with different thicknesses, the length of the anchor bolt is different, for example, when the heat-insulating layer is 250mm, the length of the anchor bolt is 315 mm; when the insulating layer is 300mm, the length of the anchor bolt is 365 mm; when the insulating layer is 350mm, the length of the anchor bolt is 415 mm; when the insulating layer is 380mm, the length of the anchor bolt is 445 mm; when the insulating layer is 450mm, the anchor bolt is made of profile steel and is 470mm in length;
the heat preservation layer of the whole body of the outer wall is 250mm in thickness, the heat preservation layer of the part modeling part is 300mm, 380mm and 450mm in thickness, because rock wool is thicker in heat preservation and higher in floor, the horizontal wind pressure load born by the outer wall is increased along with the increase of the building height, and then the adverse factors brought in the actual construction operation are comprehensively considered, and the number of the anchors in the unit area of the outer vertical surface of the fixing anchor bolt is different according to different floor heights, as shown in figure 7, for example, the following embodiments can be adopted:
a. 5/m is arranged in the first two layers of curtain walls 2 ；
b. 3-7 layers of the film are arranged at 6/m 2 ；
c. 8-12 layers are arranged at 8/m 2 ；
d. 13-17 layers set up 12/m 2 ；
e. 17-22 layers of 14/m 2 ；
f. 16/m at the position above 22 layers 2 ；
When the anchor bolts are installed, firstly, the anchor bolts are fixed on the base layer wall body 1 in advance by adopting expansion parts 52 according to an anchor bolt arrangement layout, in order to reduce a heat bridge, heat insulation materials 54 are filled in the inner containing cavities of the expansion pipes 51, and the plugging caps 55 at the end parts contacting with rock wool are not installed temporarily; then, when the rock wool is subjected to heat preservation and layered adhesion, holes need to be formed in advance in the rock wool belt, and the expanding pipe 51 penetrates through and is fixed from the hole-forming cavity; finally, after the rock wool heat preservation is completed, the plugging cap 55 is installed and fastened.
The installation requirements of the metal bracket are as follows:
the partition walls of the upper and lower windows of different floors are not provided with brackets and are supported by the window frame; the main wall brackets are arranged in a row on each floor, for example, the metal brackets are 200 x 195mm in specification except for walls between an upper window and a lower window and walls smaller than 1.5m on the left and right of the windows, the metal brackets are transversely and uniformly distributed, and the center distance between the metal brackets is 600 mm; preferably, in order to ensure the integral rigidity of the metal bracket, an L-shaped aluminum alloy section with the thickness of 3mm is selected; the specification of the metal bracket can be specifically selected according to the load requirement of actual construction, and the length of the horizontal plane can be adapted to the thickness of the rock wool belt; if the length of the horizontal plane is smaller than the thickness of the rock wool strips, the gap between the adjacent rock wool strips is filled with the foaming adhesive 7, and a construction project implementation project completed by the ultra-low energy consumption passive construction rock wool strip outer wall heat insulation construction process is adopted, wherein the total building height is 93.1 meters, the building size is the largest passive refinished public building project in severe cold regions in China, the thickness of the outer wall heat insulation layer consists of five thicknesses of 250mm, 300mm, 350mm, 380mm and 450mm, and the integral construction difficulty coefficient is larger; the specification of the metal bracket installed on the large surface of the outer wall is 200 x 195mm, and the specification of the metal bracket installed on the corner part of the outer facade of the gable is 300 x 195 mm.
As shown in fig. 8 to fig. 9, the left and right of each layer of metal bracket arranged at the large external corner and the corner position are respectively flush with the first layer of rock wool strips, the rock wool strips bitten by the external corner position are firmly adhered to each other, the shearing strength of the rock wool strips at the hanging and picking-out position is mainly enhanced, the adhering quality of the heat preservation and the up-and-down staggered assembly of the corner position is ensured, and the thermal bridge is eliminated by filling the foaming adhesive 7 in the gap at the outermost side.
(4) Pasting a first layer of rock wool belt 31;
the sticking mode preferably adopts a strip sticking method, so that the effective sticking area of the single square heat-preservation adhesive can be increased, the sticking strength of the adhesive and rock wool is enhanced, and the hidden danger of the construction quality of the system is reduced;
the adhering area of the first rock wool belt 31 and the leveling layer 2 is not less than 80%.
(5) The outer side of the door and window is provided with a door and window finished product connecting line;
the connecting mode of the finished door and window connecting line and the heat insulation structure is realized by adopting a conventional installation mode in the prior art, and the invention is not described again;
(6) adhering a second layer of rock wool strip 32;
the bonding area of the second rock wool belt 32 and the first rock wool belt 31 is not less than 70%;
(7) a third layer of rock wool belt 33 is stuck at the local modeling part;
the sticking area of the third layer rock wool belt 33 and the second layer rock wool belt 32 is not less than 70%;
(8) filling gaps in the rock wool strips, polishing and preparing protective surface layer mortar;
after each construction section is completed, the rock wool upper opening is completely filled with mortar, so that the phenomenon that rainwater is poured into the heat-insulating layer along gaps in a rainy period to cause water in the heat-insulating material is avoided, and the later quality is influenced.
Example 1
As shown in fig. 1, the ultra-low energy consumption passive building rock wool outer wall insulation structure of embodiment 1 of the present invention is an insulation structure in a position of a stone curtain wall, and includes a base wall 1, a leveling layer 2, an insulation layer 3, an anchor bolt 5 and an anti-crack mortar composite alkali-resistant glass fiber mesh fabric 6, wherein the leveling layer 2 is disposed on a side surface of the base wall 1, the insulation layer 3 is bonded on an outer side of the leveling layer 2, and the insulation layer 3 includes two rock wool belts, wherein a thickness of the first rock wool belt 31 is 120mm, a thickness of the second rock wool belt 32 is 130mm, a total thickness of the insulation layer 3 is 250mm, the anti-crack mortar composite alkali-resistant glass fiber mesh fabric 6 is laid on an outer side of the insulation layer 3, and the anchor bolt 5 penetrates through the anti-crack mortar composite alkali-resistant glass fiber mesh fabric 6, the insulation layer 3 and the leveling layer 2 from outside to inside and is connected with the base wall 1.
Example 2
As shown in fig. 12 and 13, the ultra-low energy consumption passive building rock wool belt outer wall thermal insulation structure in embodiment 2 of the present invention is a thermal insulation structure of a local modeling column, wherein 300mm thick thermal insulation layers are adhered in two layers, the first layer rock wool belt 31 has a thickness of 120mm, the second layer rock wool belt 32 has a thickness of 180mm, the outer wall thermal insulation layer 350mm thick thermal insulation layers are adhered in three layers, the first layer rock wool belt 31 has a thickness of 120mm, the second layer rock wool belt 32 has a thickness of 130mm, and the third layer rock wool belt 33 has a thickness of 100 mm.
Example 3
As shown in fig. 14 and 15, the ultra-low energy consumption passive building rock wool belt outer wall thermal insulation structure in embodiment 3 of the present invention is a thermal insulation structure of a local modeling column, the thermal insulation layer with the external wall thermal insulation thickness of 380mm is adhered in three layers, the first layer rock wool belt has a thickness of 120mm, the second layer rock wool belt has a thickness of 130mm, and the third layer rock wool belt has a thickness of 130 mm.
Example 4
As shown in fig. 16, the ultra-low energy consumption passive building rock wool outer wall thermal insulation structure in embodiment 4 of the present invention is a thermal insulation structure of a gable portion modeling column, the thermal insulation layer with the external wall thermal insulation thickness of 450mm is formed by overlapping a thermal insulation layer protruding from an external wall portion and a thermal insulation layer at a corner portion in a staggered manner, the thermal insulation layers at the external wall portion and the corner portion are both 120mm thick in first rock wool zone thickness, 130mm thick in second rock wool zone thickness, and 50mm thick in overlapping of the two thermal insulation layers.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The ultra-low energy consumption passive building rock wool zone outer wall heat insulation structure is characterized by comprising a base layer wall body (1), a leveling layer (2), a heat insulation layer (3), metal brackets (4), anchor bolts (5) and anti-crack mortar composite alkali-resistant glass fiber mesh cloth (6), wherein the leveling layer (2) is arranged on the side surface of the base layer wall body (1), the heat insulation layer (3) is bonded on the outer side of the leveling layer (2), the heat insulation layer (3) at least comprises two rock wool zones, and the metal brackets (4) are embedded and installed at the splicing parts of the rock wool zones at intervals and can support the rock wool zones; the anti-crack mortar composite alkali-resistant glass fiber mesh cloth (6) is laid on the outer side of the heat preservation layer (3), and the anchor bolt (5) penetrates through the anti-crack mortar composite alkali-resistant glass fiber mesh cloth (6), the heat preservation layer (3) and the leveling layer (2) from outside to inside and is connected with the base wall body (1).
2. The ultra-low energy consumption passive building rock wool band outer wall insulation structure of claim 1, wherein the rock wool bands of each layer are arranged in a staggered manner.
3. The ultra-low energy consumption passive type building rock wool band outer wall insulation structure as claimed in claim 2, wherein the metal bracket (4) is "L" shaped, and the vertical surface (41) is used for connecting with the substrate wall (1), and the horizontal surface (42) is used for supporting the rock wool band.
4. The ultra-low energy consumption passive type building rock wool band outer wall insulation structure according to claim 3, wherein a heat insulation gasket (43) is arranged between the vertical surface (41) and the leveling layer (2).
5. The ultra-low energy consumption passive type building rock wool outer wall insulation structure as claimed in claim 4, wherein the anti-crack mortar composite alkali-resistant glass fiber mesh fabric (6) is provided with two layers, and the anchor bolt (5) is connected between the two layers of the anti-crack mortar composite alkali-resistant glass fiber mesh fabric (6).
6. The ultra-low energy consumption passive building rock wool out-of-band wall insulation structure of claim 5, wherein the anchor bolt (5) comprises an expansion pipe (51), one end of the expansion pipe (51) is provided with an expansion part (52), the inner side of the expansion pipe (51) is provided with a connecting rod (53), the expansion pipe (51) is positioned at the outer side of the connecting rod (53) and provided with a containing cavity, and the containing cavity is filled with a heat insulation material (54); the outer end of the containing cavity is connected with a plugging cap (55).
7. A construction process for heat preservation of an external wall of an ultra-low energy consumption passive building rock wool band is realized according to any one of claims 1 to 6, and comprises the following steps in sequence:
(1) inspecting and cleaning a base layer wall body (1), leveling the masonry wall by adopting mortar, and brushing an interface treating agent on the surface of a concrete member;
(2) the rock wool belt adhesive surface is solidified by adopting an interface agent surface layer;
(3) arranging installation anchor bolts (5) and metal brackets (4) according to different floor heights;
(4) a first layer of rock wool belt (31) is adhered;
(5) the outer side of the door and window is provided with a door and window finished product connecting line;
(6) sticking a second layer of rock wool strip (32);
(7) a third layer rock wool belt (33) is stuck at the local modeling part;
(8) and (5) filling joints of the rock wool strips, polishing and preparing protective surface layer mortar.
8. The ultra-low energy consumption passive construction process of building rock wool band outer wall insulation as claimed in claim 7, wherein in step (3), no metal bracket (4) is arranged on the partition wall of the upper and lower windows on different floors, and a row of metal brackets (4) is arranged on each floor of the main wall surface.
9. The ultra-low energy consumption passive construction rock wool band outer wall heat preservation construction process of claim 7, wherein in the step (3), the anchor bolts (5) with different floor heights are different according to the number of the unit area of the outer vertical surface.
10. The ultra-low energy consumption passive building rock wool band outer wall heat preservation construction process of claim 7, wherein the adhering area of the first rock wool band (31) and the leveling layer (2) in the step (4) is not less than 80%, the adhering area of the second rock wool band (32) and the first rock wool band (31) in the step (6) is not less than 70%, and the adhering area of the third rock wool band (33) and the second rock wool band (32) in the step (7) is not less than 70%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115075412A (en) * | 2022-08-23 | 2022-09-20 | 中国飞机强度研究所 | Heat preservation system for airplane climate environment test and parameter optimization method thereof |
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| CN202202424U (en) * | 2011-08-16 | 2012-04-25 | 乔金栋 | Horizontal fiber rock wool board thin plaster exterior wall external heat insulation system |
| DE102012018415A1 (en) * | 2012-09-11 | 2014-05-15 | Gökhan Kement | Wall structure for heat and sound insulation for fitting against outer wall of building, has plate-shaped insulating element, baseboard, side insulation element and corner insulation element |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115075412A (en) * | 2022-08-23 | 2022-09-20 | 中国飞机强度研究所 | Heat preservation system for airplane climate environment test and parameter optimization method thereof |
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