CN111379373A - Composite wall board - Google Patents
Composite wall board Download PDFInfo
- Publication number
- CN111379373A CN111379373A CN201811625005.8A CN201811625005A CN111379373A CN 111379373 A CN111379373 A CN 111379373A CN 201811625005 A CN201811625005 A CN 201811625005A CN 111379373 A CN111379373 A CN 111379373A
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- layer
- steel plate
- sound
- corrugated steel
- wall
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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
- E04C2/2885—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 with the insulating material being completely surrounded by, or embedded in, a stone-like material, e.g. the insulating material being discontinuous
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- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/02—Agglomerated materials, e.g. artificial aggregates
- C04B18/027—Lightweight materials
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- 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
-
- 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
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
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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
- E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
- E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
- E04C2/3405—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by profiled spacer sheets
- E04C2002/3411—Dimpled spacer sheets
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Building Environments (AREA)
Abstract
The invention discloses a composite wallboard, which comprises an outer wall layer, a heat-insulating and sound-insulating layer and an inner wall layer, wherein the heat-insulating and sound-insulating layer is clamped between the outer wall layer and the inner wall layer; the outer wall layer comprises a first corrugated steel plate, a second corrugated steel plate and a fireproof base material, the fireproof base material is clamped between the first corrugated steel plate and the second corrugated steel plate, and the first corrugated steel plate and the second corrugated steel plate are connected in a pulling mode through U-shaped pulling-connecting reinforcing steel bars; the second corrugated steel plate is connected with the inner wall layer through a fixed connecting piece; the heat preservation and sound insulation layer comprises a heat preservation layer, a sound insulation plate and sound absorption cotton which are sequentially bonded, the heat preservation layer is arranged on one side close to the second corrugated steel plate, and the sound absorption cotton is arranged on one side close to the inner wall layer; the sound insulation layer comprises a sound insulation board and sound absorption cotton, a plurality of sound absorption holes are uniformly formed in the sound insulation board, the sound insulation board is of a hollow structure, and a vacuum bag is arranged in the hollow structure; the inner wall layer is a light concrete layer. The composite wallboard disclosed by the invention is strong in compression strength and high in breaking strength, and has excellent shock resistance, fire resistance, heat preservation and sound insulation properties.
Description
Technical Field
The invention relates to the technical field of building materials, in particular to a composite wallboard.
Background
Along with the improvement of the quality of life and the progress of industrialization, the requirements on the field of building materials are gradually changed, the production raw materials of the traditional building materials mainly come from cultivated land, a large amount of soil is taken out and baked, the energy consumption is high, and meanwhile, the exploitation of clay ore and the like causes a large amount of vegetation damage and water and soil loss; therefore, modern building materials can have low energy consumption, save land, protect environment, utilize industrial wastes, release workers from the traditional man-sea type construction mode and adopt more factory, modernization and intensive construction modes; meanwhile, the concrete has reliable engineering quality, good shock resistance, sound insulation effect, heat preservation effect and the like.
At present, the inner and outer walls of ordinary residential buildings, office buildings and the like constructed in the building industry are built by plastering cement mortar on both sides of solid clay bricks, ceramsite hollow blocks and the like. The wall structure has high cost, large occupied area, time and labor waste during construction, and poor heat insulation performance and sound insulation performance.
In recent years, composite wallboards made of a plurality of building materials have been increasingly widely used in the field of building construction. The existing wall body of the color steel plate is not fireproof and can not bear load, and the use of the existing wall body is limited by the government; wooden houses are superior to the above materials in earthquake resistance, but cannot resist earthquake and fire, such as hurricane attacks in a plurality of states in the united states, causing serious disasters. The bearing member has hidden dangers in the aspects of shock resistance, fire resistance and the like in the use process, and once natural disasters such as earthquake, fire and the like occur, safety accidents such as collapse and the like are easily caused, the life and property safety of the masses is seriously harmed, and meanwhile, the economic development is also influenced to a certain extent.
Disclosure of Invention
The invention aims to overcome the defects and provide the composite wallboard which is strong in compression resistance, high in bending strength, small in weight and excellent in shock resistance, fire resistance, heat preservation and sound insulation performance.
In order to achieve the purpose, the invention provides the following technical scheme that the composite wallboard comprises an outer wall layer, a heat-insulating and sound-insulating layer and an inner wall layer, wherein the heat-insulating and sound-insulating layer is clamped between the outer wall layer and the inner wall layer; the outer wall layer comprises a first corrugated steel plate, a second corrugated steel plate and a fireproof base material, the fireproof base material is clamped between the first corrugated steel plate and the second corrugated steel plate, and the first corrugated steel plate and the second corrugated steel plate are connected in a pulling mode through U-shaped pulling-connecting reinforcing steel bars; the second corrugated steel plate is connected with the inner wall layer through a fixed connecting piece;
the heat-insulation sound-insulation layer comprises a heat-insulation layer, a sound-insulation plate and sound-absorption cotton which are sequentially bonded, the heat-insulation layer is arranged on one side close to the second corrugated steel plate, and the sound-absorption cotton is arranged on one side close to the inner wall layer; the sound insulation layer comprises a sound insulation board and sound absorption cotton, a plurality of sound absorption holes are uniformly formed in the sound insulation board, a hollow structure is arranged in the sound insulation board, and a vacuum bag is arranged in the hollow structure;
the inner wall layer is a light concrete layer, and the light concrete plate is composed of the following raw materials in parts by weight: 80-150 parts of cement, 30-80 parts of building sand, 20-100 parts of water, 100-160 parts of ceramsite, 5.5-20 parts of flame retardant, 2-4 parts of polycarboxylic acid type water reducer and 2-5 parts of antioxidant.
By adopting the technical scheme, the corrugated steel plate adopted in the external wall panel has good mechanical property, is in a three-dimensional state, has three-dimensional stress characteristic under the load action and is in a structure working in space, has the excellent characteristic of transverse compensation displacement, can fully exert the characteristics of strong tensile property and excellent deformation resistance of steel, and has obvious advantages compared with the traditional concrete material: light weight and high strength. The service life is long, the durability is good, the factory standardized production is realized, the environment is protected, and the carbon is low; through the arrangement of the first corrugated steel plate, the second corrugated steel plate and the fireproof base material, the composite wallboard has excellent fireproof, anti-seismic and performance, and the first corrugated steel plate and the second corrugated steel plate cannot be burnt out no matter indoor or outdoor fire occurs, so that the spread of the fire can be effectively prevented, and the house collapse accident caused by the fire is avoided;
the sound insulation board has a primary sound insulation effect on noise, the vacuum bag is arranged in the sound insulation board, sound waves cannot be transmitted in vacuum, a secondary sound insulation effect on the noise is achieved, the sound absorption surface is arranged between the sound insulation board and the inner wall layer, and the noise penetrating through the gap is further insulated, so that the composite wallboard has an excellent sound insulation effect;
the inner wall layer in the invention takes the ceramsite as the aggregate, so that the inner wall layer has the characteristics of high strength and low density.
Furthermore, the thickness of each of the first corrugated steel plate and the second corrugated steel plate is 3-5 mm.
Further, the heat-insulating layer is an EPS layer or an XPS layer.
Furthermore, the fixed connecting pieces are connected by V-shaped connecting pieces, the tips of the V-shaped connecting pieces are embedded into the inner wall layer, the open ends of the V-shaped connecting pieces are respectively provided with wing plates, and the wing plates are fixed on the side wall of one side, close to the inner wall layer, of the second corrugated steel plate; the wing plates are corrugated wing plates, and the wave distance, the wave height and the radius of the waves on the corrugated wing plates are equal to those of the waves on the second corrugated steel plate.
Furthermore, the fixed connecting piece is an angle steel component, the angle steel component comprises a first angle steel and a second angle steel, the vertical section of the first angle steel is fixedly connected with the second corrugated steel plate through a first fastening bolt, the horizontal section of the first angle steel is fixedly connected with the horizontal section of the second angle steel through a second fastening bolt, and the vertical section of the second angle steel is fixedly connected with the inner wall layer through a third fastening bolt.
Further, still include the finish coat, the finish coat is fixed in first deck plate deviates from on the lateral wall of second deck plate one side.
Furthermore, the aperture of the sound absorption hole is 1-5 mm.
Further, the fireproof substrate is selected from one of a flame-retardant polyurethane layer, an aluminum fireproof layer and a calcium silicate board.
Compared with the prior art, the invention has the beneficial effects that:
1. the outer wall panel provided by the invention consists of the first corrugated steel plate, the fireproof base material and the second corrugated steel plate, so that the overall firmness of the building is increased, and the damage to the house building caused by natural disasters such as earthquake, fire and the like can be avoided.
2. The composite wallboard sequentially passes through the sound insulation board, the vacuum bag, the sound insulation board and the sound absorption cotton to block noise for multiple times, so that the composite wallboard has an excellent sound insulation effect compared with the composite wallboard in the prior art.
3. The inner wall layer of the composite wallboard takes the ceramsite as the aggregate, so that the composite wallboard has the characteristics of high strength and low density.
Drawings
Fig. 1 is a schematic structural view of an external wall panel according to the present invention.
FIG. 2 is a schematic view of the structure of the thermal and acoustical insulation layer of the present invention.
FIG. 3 is a schematic view showing the internal structure of the baffle plate according to the present invention.
FIG. 4 is a schematic view of the connection structure of the external wall panel and the internal wall panel through the V-shaped connecting member according to the present invention.
Fig. 5 is an enlarged view of the structure of the portion a in fig. 4.
FIG. 6 is a schematic view of a connection structure of the outer wall panel and the inner wall panel connected by an angle steel assembly according to the present invention.
Fig. 7 is an enlarged view of the structure B in fig. 6.
FIG. 8 is an enlarged view of the structure of the V-shaped connecting member of the present invention.
The correspondence between each mark and the part name is as follows:
1. an outer wall layer; 11. a first deck plate; 12. a second deck plate; 2. a heat and sound insulation layer; 21. a heat-insulating layer; 22. a sound insulating board; 23. sound-absorbing cotton; 24. a sound absorption hole; 3. an inner wall layer; 4. u-shaped pulling connecting steel bars; 5. a V-shaped connecting piece; 51. a corrugated wing plate; 6. vacuum bag; 7. an exterior finish layer; 8. a fire-resistant substrate; 9. an angle steel component; 91. a first angle steel; 92. a second angle steel; 93. a first fastening bolt; 94. a second fastening bolt; 95. and a third fastening bolt.
Detailed Description
In order to make the technical means, the characteristics, the purposes and the functions of the invention easy to understand, the invention is further described with reference to the specific drawings.
Example 1
As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 8, the composite wall panel in the present embodiment includes an outer wall layer 1, a heat insulating and sound insulating layer 2 and an inner wall layer 3, wherein the heat insulating and sound insulating layer 2 is sandwiched between the outer wall layer 1 and the inner wall layer 3; the outer wall layer 1 comprises a first corrugated steel plate 11, a second corrugated steel plate 12 and a fireproof substrate 8, the fireproof substrate 8 is clamped between the first corrugated steel plate 11 and the second corrugated steel plate 12, and the first corrugated steel plate 11 and the second corrugated steel plate 12 are connected in a pulling mode through U-shaped pulling-connecting steel bars 4; the second corrugated steel plate 12 is connected with the inner wall layer 3 through a V-shaped connecting piece 5; the tip end of the V-shaped connecting piece 5 is embedded in the inner wall layer 3, the opening ends of the V-shaped connecting piece 5 are respectively provided with wing plates, and the wing plates are fixed on the side wall of the second corrugated steel plate 12 close to one side of the inner wall layer 3; the fins are corrugated fins 51, and the pitch, height and radius of the corrugations on the corrugated fins 51 are equal to the pitch, height and radius of the corrugations on the second corrugated steel plate 12.
The heat-insulating and sound-insulating layer 2 comprises a heat-insulating layer 21, a sound-insulating plate 22 and sound-absorbing cotton 23 which are sequentially bonded, wherein the heat-insulating layer 21 is arranged on one side close to the second corrugated steel plate 12, and the sound-absorbing cotton 23 is arranged on one side close to the inner wall layer 3; the sound insulation layer comprises a sound insulation board 22 and sound absorption cotton 23, a plurality of sound absorption holes 24 are uniformly formed in the sound insulation board 22, the sound insulation board 22 is internally provided with a hollow structure, and a vacuum bag 6 is arranged in the hollow structure.
The inner wall layer 3 is a light concrete layer, and the light concrete plate is composed of the following raw materials by weight: 100 parts of cement, 70 parts of building sand, 75 parts of water, 120 parts of ceramsite, 6 parts of flame retardant, 5 parts of polycarboxylic acid type water reducing agent and 5 parts of antioxidant. (the above unit is g or kg)
Wherein the thickness of the first deck plate 11 and the second deck plate 12 are both 5 mm.
Wherein, the heat preservation layer 21 is an EPS layer.
The composite wall board in the embodiment further comprises an outer facing layer 7, and the outer facing layer 7 is bonded on the side wall of the first corrugated steel plate 11 facing away from the second corrugated steel plate 12.
The aperture of the sound absorbing hole 24 of the sound insulation board 22 in the composite wall board in the embodiment is 3 mm.
Wherein, the fireproof substrate 8 is a flame-retardant polyurethane layer.
Example 2
As shown in fig. 1, fig. 2, fig. 3, fig. 6 and fig. 7, the composite wall panel in the present embodiment includes an outer wall layer 1, a heat insulating and sound insulating layer 2 and an inner wall layer 3, wherein the heat insulating and sound insulating layer 2 is clamped between the outer wall layer 1 and the inner wall layer 3; the outer wall layer 1 comprises a first corrugated steel plate 11, a second corrugated steel plate 12 and a fireproof substrate 8, the fireproof substrate 8 is clamped between the first corrugated steel plate 11 and the second corrugated steel plate 12, and the first corrugated steel plate 11 and the second corrugated steel plate 12 are connected in a pulling mode through U-shaped pulling-connecting steel bars 4; the second corrugated steel plate 12 is connected with the inner wall layer 3 through an angle steel assembly 9; the angle steel assembly 9 comprises a first angle steel 91 and a second angle steel 92, wherein the vertical section of the first angle steel 91 is fixedly connected with the second corrugated steel plate 12 through a first fastening bolt 93, the horizontal section of the first angle steel 91 is fixedly connected with the horizontal section of the second angle steel 92 through a second fastening bolt 94, and the vertical section of the second angle steel 92 is fixedly connected with the inner wall layer 3 through a third fastening bolt 95.
The heat-insulating and sound-insulating layer 2 comprises a heat-insulating layer 21, a sound-insulating plate 22 and sound-absorbing cotton 23 which are sequentially bonded, wherein the heat-insulating layer 21 is arranged on one side close to the second corrugated steel plate 12, and the sound-absorbing cotton 23 is arranged on one side close to the inner wall layer 3; the sound insulation layer comprises a sound insulation board 22 and sound absorption cotton 23, a plurality of sound absorption holes 24 are uniformly formed in the sound insulation board 22, the sound insulation board 22 is of a hollow structure, and a vacuum bag 6 is arranged in the hollow structure;
the inner wall layer 3 is a light concrete layer, and the light concrete plate is composed of the following raw materials by weight: 150 parts of cement, 75 parts of building sand, 90 parts of water, 150 parts of ceramsite, 6 parts of flame retardant, 3.6 parts of polycarboxylic acid type water reducing agent and 4 parts of antioxidant. (the above unit is g or kg)
Wherein the thickness of the first deck plate 11 and the second deck plate 12 are both 5 mm.
Wherein, the insulating layer 21 is an XPS layer.
The composite wallboard in the embodiment further comprises an outer facing layer 7 and the outer facing layer 7, wherein the outer facing layer 7 is bonded on the side wall of the first corrugated steel plate 11, which faces away from the second corrugated steel plate 12.
The aperture of the sound absorption hole 24 on the sound insulation board 22 in the composite wallboard in the embodiment is 1-5 mm.
Wherein, the fireproof substrate 8 is a calcium silicate board.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A composite wallboard is characterized by comprising an outer wall layer, a heat-insulating and sound-insulating layer and an inner wall layer, wherein the heat-insulating and sound-insulating layer is clamped between the outer wall layer and the inner wall layer; the outer wall layer comprises a first corrugated steel plate, a second corrugated steel plate and a fireproof base material, the fireproof base material is clamped between the first corrugated steel plate and the second corrugated steel plate, and the first corrugated steel plate and the second corrugated steel plate are connected in a pulling mode through U-shaped pulling-connecting reinforcing steel bars; the second corrugated steel plate is connected with the inner wall layer through a fixed connecting piece;
the heat-insulation sound-insulation layer comprises a heat-insulation layer, a sound-insulation plate and sound-absorption cotton which are sequentially bonded, the heat-insulation layer is arranged on one side close to the second corrugated steel plate, and the sound-absorption cotton is arranged on one side close to the inner wall layer; the sound insulation layer comprises a sound insulation board and sound absorption cotton, a plurality of sound absorption holes are uniformly formed in the sound insulation board, a hollow structure is arranged in the sound insulation board, and a vacuum bag is arranged in the hollow structure;
the inner wall layer is a light concrete layer, and the light concrete plate is composed of the following raw materials in parts by weight: 80-150 parts of cement, 30-80 parts of building sand, 20-100 parts of water, 100-160 parts of ceramsite, 5.5-20 parts of flame retardant, 2-4 parts of polycarboxylic acid type water reducer and 2-5 parts of antioxidant.
2. A composite wall panel according to claim 1, wherein the first and second corrugated steel sheets are each 3 to 5mm thick.
3. The composite wallboard of claim 1, wherein the insulation layer is an EPS layer or an XPS layer.
4. The composite wall panel according to claim 1, wherein the fixing connectors are V-shaped connectors, the tips of the V-shaped connectors are embedded in the inner wall layer, and the open ends of the V-shaped connectors are respectively provided with wing plates fixed on the side wall of the second corrugated steel plate near the inner wall layer; the wing plates are corrugated wing plates, and the wave distance, the wave height and the radius of the waves on the corrugated wing plates are equal to those of the waves on the second corrugated steel plate.
5. The composite wall panel according to claim 1, wherein the fixed connection member is an angle steel assembly, the angle steel assembly comprises a first angle steel and a second angle steel, the first angle steel vertical section is fixedly connected with the second corrugated steel plate through a first fastening bolt, the first angle steel horizontal section is fixedly connected with the second angle steel horizontal section through a second fastening bolt, and the second angle steel vertical section is fixedly connected with the inner wall layer through a third fastening bolt.
6. A composite wall panel according to claim 1, further comprising an exterior facing layer bonded to a side wall of the first deck plate on a side thereof facing away from the second deck plate.
7. The composite wall panel according to claim 1, wherein the aperture of the sound absorption hole is 1 to 5 mm.
8. A composite wall panel according to claim 1, wherein said fire-resistant substrate is selected from the group consisting of fire-resistant polyurethane layers, aluminum fire-resistant layers, calcium silicate boards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625005.8A CN111379373A (en) | 2018-12-28 | 2018-12-28 | Composite wall board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625005.8A CN111379373A (en) | 2018-12-28 | 2018-12-28 | Composite wall board |
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| Publication Number | Publication Date |
|---|---|
| CN111379373A true CN111379373A (en) | 2020-07-07 |
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ID=71215036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811625005.8A Pending CN111379373A (en) | 2018-12-28 | 2018-12-28 | Composite wall board |
Country Status (1)
| Country | Link |
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| CN (1) | CN111379373A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112554440A (en) * | 2020-12-11 | 2021-03-26 | 深圳市恒星建材有限公司 | Fabricated high-ductility concrete slab and construction method thereof |
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| CN112554440A (en) * | 2020-12-11 | 2021-03-26 | 深圳市恒星建材有限公司 | Fabricated high-ductility concrete slab and construction method thereof |
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Application publication date: 20200707 |
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