CN111593834A - Spray-built gypsum three-layer heat-preservation composite double-layer outer wall and preparation method thereof - Google Patents
Spray-built gypsum three-layer heat-preservation composite double-layer outer wall and preparation method thereof Download PDFInfo
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- 239000010440 gypsum Substances 0.000 title claims abstract description 48
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 48
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 238000004321 preservation Methods 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 105
- 239000010959 steel Substances 0.000 claims abstract description 105
- 238000009413 insulation Methods 0.000 claims abstract description 46
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000005507 spraying Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004570 mortar (masonry) Substances 0.000 claims description 40
- 239000011083 cement mortar Substances 0.000 claims description 20
- 239000011426 gypsum mortar Substances 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 11
- 239000004744 fabric Substances 0.000 claims description 10
- 239000004088 foaming agent Substances 0.000 claims description 9
- 229920002635 polyurethane Polymers 0.000 claims description 9
- 239000004814 polyurethane Substances 0.000 claims description 9
- 239000004568 cement Substances 0.000 claims description 8
- 238000005336 cracking Methods 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 4
- 238000010009 beating Methods 0.000 claims description 3
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- 238000010276 construction Methods 0.000 abstract description 13
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000006227 byproduct Substances 0.000 abstract description 7
- 238000004134 energy conservation Methods 0.000 abstract description 6
- 238000005192 partition Methods 0.000 abstract description 6
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- 239000002699 waste material Substances 0.000 abstract description 3
- 239000011368 organic material Substances 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 118
- 239000012774 insulation material Substances 0.000 description 5
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical group [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
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- 238000009430 construction management Methods 0.000 description 1
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
- E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
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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
-
- 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
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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
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
- E04B2/76—Removable non-load-bearing partitions; Partitions with a free upper edge with framework or posts of metal
-
- 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
- E04F13/02—Coverings or linings, e.g. for walls or ceilings of plastic materials hardening after applying, e.g. plaster
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
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- Acoustics & Sound (AREA)
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Abstract
The invention relates to a spray-built gypsum three-layer heat-preservation composite double-layer outer wall body and a preparation method thereof. The wall body structure and the preparation method thereof can well improve the energy-saving efficiency of the outer wall, meet the high requirements of severe cold regions and cold regions on heat preservation and energy saving, and simultaneously avoid the generation of heat bridges; if the fireproof requirement of the building is met, the outer side heat preservation adopts inorganic fireproof materials, and the middle heat preservation adopts organic materials; the two materials are organically combined, so that the unification of high efficiency, energy conservation and fire prevention is achieved; the simplest construction method of the fabricated building can be completed by the technology, namely, the main structure is taken by a concrete structure and a steel structure, and the work of the enclosure part including an inner partition wall, an outer wall heat insulation and the like is completed by spraying and building type gypsum composite materials; by the technology, a large amount of gypsum which is a byproduct of the process can be consumed, waste is changed into valuable, and the green water green mountain is protected.
Description
Technical Field
The invention relates to a wall structure in the technical field of construction engineering construction and a construction method for implementing the structure, in particular to a spray-built gypsum three-layer heat-preservation composite double-layer outer wall and a preparation method thereof.
Background
The annual production amount of industrial byproduct gypsum in China is about 1.84 hundred million tons, and the accumulated stockpiling amount exceeds 5 hundred million tons. But the comprehensive utilization rate of the newly increased production amount is only 48.1% every year, and the unused part can be only stocked in the open air. A large amount of gypsum waste residues are piled up, namely, a large amount of land is occupied; secondly, the investment of a storage yard is large, the operation cost is high, and the volume of the storage yard and the anti-seepage treatment requirement of the foundation are strict; thirdly, precious sulfur resources are wasted; and the contained acidity and other harmful substances are easy to cause pollution to the surrounding environment, and are not qualified with the environmental protection policy advocated by the state. The industrial by-product gypsum is an important regenerated gypsum resource, and the main component of the industrial by-product gypsum is calcium sulfate (CaSO)4·2H2O), is an excellent cementing material, has the technical characteristics of early setting, quick hardening, fire prevention and energy conservation, is harmless to human bodies, and is suitable for being used as interior decoration materials, including wall materials. But at present, the cement retarder, the paper-surface plasterboard and the like are mainly used, the utilization amount is saturated, and the rising space is limited. Therefore, the development of gypsum as an industrial by-product for use in other fields of building materials is urgently needed.
At present, the state has vigorously advocated prefabricated building house technology, including prefabricated concrete structure, prefabricated steel structure, prefabricated timber structure to require that the partition wall adopts non-masonry technology in the building. The known inner partition wall building technology capable of calculating the assembly rate comprises a batten, a prefabricated large plate and a light steel keel composite wall, wherein the gypsum batten can absorb a large amount of byproduct gypsum, but the gypsum batten has poor sound insulation and thin thickness and becomes a restrictive factor of vigorous development. The spraying-building gypsum composite wall is mainly used for non-bearing internal partition walls, and the main reason is that the gypsum product has poor water resistance. As an assembly technology, if the spray-built gypsum composite wall is only made on the inner partition wall, and the parts of the outer wall and the kitchen and bathroom needing water prevention adopt other construction modes, the construction management is inconvenient. In addition, building energy conservation is a mandatory standard in the field of buildings in China, and the existing energy-saving mode of wall bodies in China is mainly to install a heat-preservation energy-saving system on the outer side or the inner side of an outer wall. The high-efficiency heat insulation material has low strength, is inconvenient to use on the inner side of the outer wall, is easy to crack and fall off on the outer side of the outer wall, has insufficient fireproof grade, is easy to catch fire and threatens lives of residents.
Disclosure of Invention
The invention aims to provide a spraying-building type gypsum three-layer heat-insulation composite double-layer outer wall structure and a preparation method thereof, and aims to integrate a heat-insulation system in the wall structure by utilizing the characteristics of a spraying-building type wall body, solve the problems of energy conservation, fire prevention, safety and use of the outer wall, and provide a referable technical standard and an implementation scheme for a process route of an assembled building.
Therefore, the technical scheme for solving the problems is as follows: a spray-built gypsum three-layer heat-preservation composite double-layer outer wall body is composed of an upper end beam of the wall body, a lower end beam of the wall body, a double-layer light steel keel framework, a steel wire mesh, anchor bolts, an outer side layer of the wall body, an inner side layer of the wall body, a grid cloth layer, a cement mortar layer, a heat-preservation plate layer, a center filling layer of the wall body and a gypsum mortar layer, wherein the double-layer light steel keel framework is arranged between the cement mortar layer and the gypsum mortar layer, the steel wire mesh is fixed on the double-layer light steel keel framework through the anchor bolts, and two ends of the steel wire mesh extend up and down to the upper end beam of the wall body and the lower end beam of the wall body; the wall center filling layer is arranged between the double-layer light steel keel framework and the wall upper end beam and between the double-layer light steel keel framework and the wall lower end beam.
Further, the wall center filling layer is a wall cavity.
Further, the wall center filling layer is a heat preservation slab layer.
Furthermore, the filling layer in the center of the wall body is a heat-insulating mortar layer.
Further, double-deck light gauge steel skeleton, its one side pass through the crab-bolt with the heated board is connected, the opposite side of double-deck light gauge steel skeleton pass through the crab-bolt with wall body inside layer is connected.
Further, the gypsum mortar layer is arranged between the wall center filling layer and the wall inner side layer.
Further, the heat preservation plate layer is arranged between the gridding cloth layer and the cement mortar layer.
Further, the heat preservation plate layer is arranged between the gypsum mortar layer and the cement mortar layer and fixedly connected with the steel wire mesh.
Furthermore, the outer layer of the wall body is an anti-cracking mortar layer.
In addition, the preparation method of the spray-built gypsum three-layer heat-preservation composite double-layer outer wall body comprises the following steps:
s1, selecting a light steel keel with a certain width as an outer wall framework of the composite wall, fixedly connecting upper and lower guide beams of the framework and upright posts on two sides of the wall with anchor bolts, and fixedly connecting a middle upright post of the wall with the upper and lower guide beams of the framework through the anchor bolts.
S2, installing a steel wire mesh on the outer side of the framework, and fixedly connecting the framework and the steel wire mesh by screws according to the arrangement point;
s3, coating cement mortar or other cement-based mortar along the inner side of the outer-layer steel wire mesh to the outer side of the steel wire mesh;
s5, smearing or spraying thermal insulation mortar or pasting a high-efficiency thermal insulation board on the inner side of the outer layer wall framework from inside to outside, and leveling the thermal insulation mortar or the high-efficiency thermal insulation board with the light steel keel framework;
s6, filling a foaming rod and injecting a polyurethane foaming agent into joints of the outer layer light steel keel, the wall body beam and the column, and filling gaps;
s7, filling the outer side of the joint of the outer layer light steel keel and the wall body beam with weather-resistant glue;
s8, beating ash cakes and punching ribs along the outer side of the outer steel wire mesh to control the flatness and the verticality of the wall surface;
s9, paving a steel wire mesh with the width of 300mm at the joint of the light steel keel on the outer side of the outer steel wire mesh and the wall body beam to prevent the joint from cracking;
s10, smearing cement-based mortar along the outer side of the outer wall and leveling to reach an acceptance standard;
s11, sticking a high-efficiency heat-insulating material plate on the scraped plane of the outer layer light steel keel framework, wherein the thickness of the high-efficiency heat-insulating material plate is not more than that of a cavity reserved between two layers of light steel keels;
s12, selecting a light steel keel with a certain width as an inner wall framework of the composite wall, fixing upper and lower guide beams and upright posts of the wall on the ground in advance to form the wall framework by screws, and fixing a steel wire mesh on the outer side of the framework by screws to form a mesh cage;
s13, mounting the cage frame with the net on the inner side frame of the composite wall body, and fixedly connecting the upper and lower guide beams and the upright columns on the two sides of the cage frame with the upper and lower end beams and the upright columns of the wall body by using expansion screws;
s14, filling foaming rods at joints of the cage frame with the net and the wall body beam and the column, injecting polyurethane foaming agents into the foaming rods, and filling gaps with the polyurethane foaming agents;
s15, filling the outer side of the joint of the cage frame with the net and the wall beam with weather-resistant glue;
s16, installing a water and electricity pipe groove on the net cage frame;
s17, spraying gypsum-based mortar to the net cage frame and scraping along the light steel keel of the net cage frame to form an inner wall; until reaching the acceptance criteria.
S18, paving a steel wire mesh or glass fiber mesh cloth with the width of 250mm at the joint of the inner wall and the beam to prevent the joint from cracking;
s19, plastering cakes and punching ribs on the inner-layer wall to control the flatness and the verticality of the wall surface;
s20, spraying gypsum-based mortar on the inner wall and leveling until the gypsum-based mortar reaches the acceptance standard.
Preferably, the anchor bolt in the step s1 is an expansion screw.
Preferably, in the step s11, the efficient heat insulation material plate is adhered to the plane of the outer layer light steel keel framework, and is a heat insulation plate, a heat insulation cotton or a heat insulation blanket.
Compared with the prior art, the invention has the following positive effects: the spray-built gypsum three-layer heat-insulation composite double-layer outer wall body and the preparation method thereof can well improve the energy-saving efficiency of the outer wall, meet the high requirements of severe cold regions and cold regions on heat insulation and energy saving, and simultaneously avoid the generation of heat bridges; if the fireproof requirement of the building is met, the outer side heat preservation adopts inorganic fireproof materials, and the middle heat preservation adopts organic materials; the two materials are organically combined, so that the unification of high efficiency, energy conservation and fire prevention is achieved; the simplest construction method of the fabricated building can be completed by the technology, namely, the main structure is taken by a concrete structure and a steel structure, and the work of the enclosure part including an inner partition wall, an outer wall heat insulation and the like is completed by spraying and building type gypsum composite materials; by the technology, a large amount of gypsum which is a byproduct of the process can be consumed, waste is changed into valuable, and the green water green mountain is protected.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a wall construction of the present invention having both a wall center filling layer and a cement mortar layer;
FIG. 2 is a schematic view of yet another embodiment of the present invention of a wall construction having both insulation and a cement mortar layer;
figure 3 is a schematic view of yet another embodiment of the present invention of a wall construction having both an insulating mortar layer and a cementitious mortar layer.
In the figure: 1-double-layer light steel keel framework, 2-steel wire mesh, 3-anchor bolt (expansion screw), 4-crack-resistant mortar layer (wall outer layer), 5-grid cloth layer, 6-heat preservation plate layer, 7-wall center filling layer, 8-wall upper end beam, 9-wall lower end beam, 9-gypsum mortar layer, 11-wall inner layer, 12-heat preservation mortar layer, 13-wall upright post, 14-light steel keel guide beam, 15-wall center upright post and 16-cement mortar layer.
The specific implementation mode is as follows:
the following embodiments respectively describe a spray-built gypsum three-layer heat-preservation composite double-layer outer wall and a construction method thereof. Referring to the attached drawing 1, the wall body in this example is composed of an upper end beam 8 of the wall body, a lower end beam 9 of the wall body, a double-layer light steel keel frame 1, a steel wire mesh 2, an anchor bolt 3, an outer side layer 4 of the wall body, an inner side layer 11 of the wall body, a grid cloth layer 5, a cement mortar layer 16, a heat preservation board layer 6, a central filling layer 7 of the wall body and a gypsum mortar layer 10, wherein the double-layer light steel keel frame 1 is arranged between the cement mortar layer 16 and the gypsum mortar layer 10, the steel wire mesh 2 is fixed on the double-layer light steel keel frame 1 through the anchor bolt 3, and two ends of the steel wire mesh 2 respectively extend to the upper end beam 8 of the wall body and the lower end beam 9 of the wall body from top to bottom and; and the wall center filling layer 7 is arranged between the double-layer light steel keel framework and the wall upper end beam and between the double-layer light steel keel framework and the wall lower end beam. In practice, the filling layer 7 in the center of the wall body is a cavity of the wall body, and the cavity is filled with air to form an air interlayer of the wall body, so that heat preservation and sound insulation are realized; if the wall insulation effect of the construction area is considered, the insulation slab layer 6 can be filled into the wall center filling layer 7 in an assembling mode as shown in fig. 2, or the insulation mortar layer 12 can be filled into the wall center filling layer 7 in a spraying mode as shown in fig. 3. From the inner structure of wall body, be connected one side of double-deck light gauge steel skeleton 1 with heated board 6 through crab-bolt or inflation screw 3, the opposite side of double-deck light gauge steel skeleton 1 is connected with wall body inside layer 11 through crab-bolt or inflation screw 3. The gypsum mortar layer 10 is arranged between the wall center filling layer 7 and the wall inner layer 11, and the heat preservation plate layer 6 is arranged between the mesh cloth layer 5 and the cement mortar layer 4. For walls with multiple layers of insulation, it is practical to place the insulation wythe 6 between the gypsum mortar layer 10 and the cement mortar layer 16 and cover them with a steel mesh, and then fix them together with screws. In practice, the outer layer of the wall body is the anti-crack mortar layer.
Referring to fig. 1, a process for implementing the present embodiment includes the following steps:
s1, selecting a light steel keel with a certain width as a double-layer light steel keel framework 1 of the three-layer heat-preservation composite double-layer wall, fixedly connecting an upper end beam 8, a lower end beam 9 and a central upright post 15 of the wall on an upper guide beam 14 and a lower guide beam 14 of the framework and upright posts 13 on two sides of the wall by using anchor bolts or expansion screws 3, and fixedly connecting a middle upright post of the wall with the upper guide beam and the lower guide beam of the framework by using screws.
S2, installing a steel wire mesh on the outer side of the framework, and fixedly connecting the framework and the steel wire mesh by screws according to the arrangement point;
s3, coating cement mortar or other cement-based mortar along the inner side of the outer-layer steel wire mesh to the outer side of the steel wire mesh;
s5, smearing or spraying thermal insulation mortar or pasting a high-efficiency thermal insulation board on the inner side of the outer layer wall framework from inside to outside, and leveling the thermal insulation mortar or the high-efficiency thermal insulation board with the light steel keel framework;
s6, filling a foaming rod and injecting a polyurethane foaming agent into joints of the outer layer light steel keel, the wall body beam and the column, and filling gaps;
s7, filling the outer side of the joint of the outer layer light steel keel and the wall body beam with weather-resistant glue;
s8, beating ash cakes and punching ribs along the outer side of the outer steel wire mesh to control the flatness and the verticality of the wall surface;
s9, paving a steel wire mesh with the width of 300mm at the joint of the light steel keel on the outer side of the outer steel wire mesh and the wall body beam to prevent the joint from cracking;
s10, smearing cement-based mortar along the outer side of the outer wall and leveling to reach an acceptance standard;
s11, pasting high-efficiency heat-insulation materials such as heat-insulation boards, cotton and blankets on the scraped plane of the outer layer light steel keel framework, wherein the thickness of the heat-insulation boards is not more than the thickness of a cavity reserved between the two layers of light steel keels no matter what materials are used;
s12, selecting a light steel keel with a certain width as an inner wall framework of the composite wall, fixing upper and lower guide beams and upright posts on the ground by screws to form the wall framework in advance, and fixing a steel wire mesh on the outer side of the framework by screws to form a mesh cage;
s13, mounting the cage frame with the net on the inner side frame of the composite wall body, and fixedly connecting the upper and lower guide beams and the upright columns on the two sides of the cage frame with the upper and lower end beams and the upright columns of the wall body by using expansion screws;
s14, filling foaming rods at joints of the cage frame with the net and the wall body beam and the column, injecting polyurethane foaming agents into the foaming rods, and filling gaps with the polyurethane foaming agents;
s15, filling the outer side of the joint of the cage frame with the net and the wall beam with weather-resistant glue;
s16, installing a water and electricity pipe groove on the net cage frame;
s17, spraying gypsum-based mortar to the net cage frame and scraping along the light steel keel of the net cage frame to form an inner wall; until reaching the acceptance criteria.
S18, paving a steel wire mesh or glass fiber mesh cloth with the width of 250mm at the joint of the inner wall and the beam to prevent the joint from cracking;
s19, plastering cakes and punching ribs on the inner-layer wall to control the flatness and the verticality of the wall surface;
s20, spraying gypsum-based mortar on the inner wall and leveling until the gypsum-based mortar reaches the acceptance standard.
In summary, the construction process of the wall body implementing the present invention should address the following issues if it is a construction standard:
at the outer wall position, install double-deck light gauge steel skeleton, inside the skeleton, between the two-layer skeleton and the outside, fill different materials respectively, form a double-deck keel skeleton, three-layer insulation material's composite wall, wherein: steel wire meshes are arranged on two sides of the outer layer keel frame, heat insulation mortar or high-efficiency heat insulation materials such as boards, cotton, blankets and foaming materials are adopted in the keel frame, cement mortar or polymer mortar is smeared on the steel wire meshes of the outer layer of the wall body, and a plane is found; then pasting an efficient heat insulation board on the base layer of the outer cement mortar leveling surface or smearing heat insulation mortar and the crack resistance thereof
A mortar and alkali-resistant mesh protective layer; installing steel wire meshes on one side or two sides of the inner layer keel framework, adopting gypsum-based mortar materials such as plastering gypsum mortar, wall spraying mortar, gypsum heat-insulating mortar and the like or cement-based mortar materials, and smearing or spraying the materials on the light steel keel and the steel wire meshes to form an inner wall body completely wrapped by the steel wire meshes; the space enclosed between the inner and outer light steel keels can be an air layer, and can also be filled with thermal insulation mortar or thermal insulation boards, cotton, blankets and foaming materials according to different climatic conditions and specific requirements of energy conservation to form a three-layer thermal insulation composite outer wall.
Claims (12)
1. A spray-built gypsum three-layer heat-preservation composite double-layer outer wall body is composed of an upper end beam of the wall body, a lower end beam of the wall body, a double-layer light steel keel framework, a steel wire mesh, anchor bolts, an outer side layer of the wall body, an inner side layer of the wall body, a grid cloth layer, a cement mortar layer, a heat-preservation plate layer, a central filling layer of the wall body and a gypsum mortar layer, and is characterized in that the double-layer light steel keel framework is arranged between the cement mortar layer and the gypsum mortar layer, the steel wire mesh is fixed on the double-layer light steel keel framework through the anchor bolts, and two ends of the steel wire mesh extend up and down to the upper end beam of the wall body and the lower end beam of the; the wall center filling layer is arranged between the double-layer light steel keel framework and the wall upper end beam and between the double-layer light steel keel framework and the wall lower end beam.
2. The spray-built gypsum three-layer heat-insulating composite double-layer outer wall body as claimed in claim 1, wherein the wall center filling layer is a wall cavity.
3. The spray-built gypsum three-layer thermal insulation composite double-layer outer wall body as claimed in claim 1, wherein the wall center filling layer is a thermal insulation board layer.
4. The spray-built gypsum three-layer thermal insulation composite double-layer outer wall body as claimed in claim 1, wherein the wall center filling layer is a thermal insulation mortar layer.
5. The spray-built gypsum three-layer heat-insulation composite double-layer outer wall body as claimed in claim 1, wherein one side of the double-layer light steel keel framework is connected with the heat-insulation board through an anchor bolt, and the other side of the double-layer light steel keel framework is connected with the inner layer of the wall body through an anchor bolt.
6. The spray-built gypsum three-layer heat-insulating composite double-layer outer wall body as claimed in claim 1, wherein the gypsum mortar layer is arranged between the central filling layer and the inner layer of the wall body.
7. The sprayed and built gypsum three-layer thermal insulation composite double-layer outer wall body as claimed in claim 1, wherein the thermal insulation board layer is arranged between the mesh cloth layer and the cement mortar layer.
8. The sprayed and built gypsum three-layer heat-insulating composite double-layer outer wall body as claimed in claim 1, wherein the heat-insulating board layer is arranged between the gypsum mortar layer and the cement mortar layer and is fixedly connected with the steel wire mesh.
9. The sprayed and built gypsum three-layer thermal insulation composite double-layer outer wall body as claimed in claim 1, wherein the outer layer of the wall body is an anti-crack mortar layer.
10. A preparation method of a spray-built gypsum three-layer heat-preservation composite double-layer outer wall body is characterized by comprising the following steps:
s1, selecting a light steel keel with a certain width as an outer wall framework of a composite wall, fixedly connecting upper and lower guide beams of the framework and upright columns at two sides of the framework with upper and lower end beams of the wall and upright columns of the wall by using expansion screws, and fixedly connecting a middle upright column of the wall with the upper and lower guide beams of the framework by using screws;
s2, installing a steel wire mesh on the outer side of the framework, and fixedly connecting the framework and the steel wire mesh by screws according to the arrangement point;
s3, coating cement mortar or other cement-based mortar along the inner side of the outer-layer steel wire mesh to the outer side of the steel wire mesh;
s5, smearing or spraying thermal insulation mortar or pasting a high-efficiency thermal insulation board on the inner side of the outer layer wall framework from inside to outside, and leveling the thermal insulation mortar or the high-efficiency thermal insulation board with the light steel keel framework;
s6, filling a foaming rod and injecting a polyurethane foaming agent into joints of the outer layer light steel keel, the wall body beam and the column, and filling gaps;
s7, filling the outer side of the joint of the outer layer light steel keel and the wall body beam with weather-resistant glue;
s8, beating ash cakes and punching ribs along the outer side of the outer steel wire mesh to control the flatness and the verticality of the wall surface;
s9, paving a steel wire mesh with the width of 300mm at the joint of the light steel keel on the outer side of the outer steel wire mesh and the wall body beam to prevent the joint from cracking;
s10, smearing cement-based mortar along the outer side of the outer wall and leveling to reach an acceptance standard;
s11, pasting high-efficiency heat-insulating materials (plates, cotton, blankets and the like) on the slicking plane of the outer-layer light steel keel framework, wherein the thickness of the high-efficiency heat-insulating materials does not exceed the thickness of a cavity reserved between the two layers of light steel keels;
s12, selecting a light steel keel with a certain width as an inner wall framework of the composite wall, fixing upper and lower guide beams and upright posts on the ground by screws to form the wall framework in advance, and fixing a steel wire mesh on the outer side of the framework by screws to form a mesh cage;
s13, mounting the cage frame with the net on the inner side frame of the composite wall body, and fixedly connecting the upper and lower guide beams and the upright columns on the two sides of the cage frame with the upper and lower end beams and the upright columns of the wall body by using expansion screws;
s14, filling foaming rods at joints of the cage frame with the net and the wall body beam and the column, injecting polyurethane foaming agents into the foaming rods, and filling gaps with the polyurethane foaming agents;
s15, filling the outer side of the joint of the cage frame with the net and the wall beam with weather-resistant glue;
s16, installing a water and electricity pipe groove on the net cage frame;
s17, spraying gypsum-based mortar to the net cage frame and scraping along the light steel keel of the net cage frame to form an inner wall; until reaching the acceptance standard;
s18, paving and pasting steel wire mesh or glass fiber mesh cloth with the width of 250mm at the joint of the inner wall and the beam to prevent the joint from cracking;
s19, plastering cakes and punching ribs on the inner-layer wall to control the flatness and the verticality of the wall surface;
s20, spraying gypsum-based mortar on the inner wall and leveling until the gypsum-based mortar reaches the acceptance standard.
11. The method for preparing the spray-built gypsum three-layer heat-insulating composite double-layer outer wall body according to claim 10, wherein the anchor bolt in the step S1 is an expansion screw.
12. The method for preparing the spray-built gypsum three-layer heat-preservation composite double-layer outer wall body according to claim 10, wherein in the step S11, the high-efficiency heat-preservation material plate is pasted on the plane scraped by the outer-layer light steel keel framework and is a heat-preservation plate, heat-preservation cotton or a heat-preservation blanket.
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| CN113463796A (en) * | 2021-08-09 | 2021-10-01 | 上海恪耐新材料科技有限公司 | Composite wall body of light steel keel with special-shaped cross section structure and construction method |
| CN114482338A (en) * | 2021-12-13 | 2022-05-13 | 张炜 | Construction method of high-performance spray-built non-bearing outer wall |
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