CN118686353A - A cement-based polymer and AAC combined exterior wall board - Google Patents

Abstract

The present invention relates to the field of prefabricated buildings, and discloses a cement-based polymer and AAC combined exterior wallboard, comprising a wallboard made of AAC, a cement-based polymer layer fixed on the surface of one or more side-by-side wallboards to form an integral combined exterior wallboard, and the cement-based polymer layer fully covers at least one side of the one or more side-by-side wallboards. The present invention can solve the problem in the prior art that AAC boards cannot be used as building exterior walls.

Description

A cement-based polymer and AAC combined exterior wall panel

Technical Field

The invention relates to the field of prefabricated buildings, and in particular to an exterior wall panel composed of a cement-based polymer and AAC.

Background Art

AAC is the abbreviation of Autoclaved Aerated Concrete, which is a new type of lightweight and porous building material. AAC materials are made of raw materials such as silica sand, cement, lime, gypsum, etc., through batching, mixing, pouring, pre-curing, cutting, high-pressure steam curing and other process processes. In the production process, by adding foaming agents such as aluminum powder, a large number of evenly distributed closed micropores are generated inside the concrete, which greatly reduces the density of the material, improves the thermal insulation performance, and maintains a high strength. AAC materials have many advantages such as light weight, high strength, good thermal insulation performance, excellent sound insulation effect, superior seismic performance, convenient construction, environmental protection and sustainability. They are widely used in various building structures such as walls, floor slabs, roof panels, fireproof isolation walls, etc. In the modern construction industry, AAC has been increasingly used and promoted as a green and energy-saving building material. ALC panels have the characteristics of light weight, thermal insulation, heat insulation, fire prevention, sound insulation, environmental protection, convenient construction, good economy, and recyclability, and are widely used in modern buildings. However, due to its porous structural characteristics, its waterproof and moisture-proof performance is poor. When used as a wall material, it can currently only be used as indoor filling walls, but not as exterior walls of buildings. In addition, its seismic performance after assembly is poor, and its use in load-bearing walls is greatly limited.

Summary of the invention

The present invention is intended to provide a cement-based polymer and AAC combined exterior wall board to solve the problem in the prior art that the AAC board cannot be used as a building exterior wall and a load-bearing wall.

To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a cement-based polymer and AAC combined exterior wall panel, comprising a wall panel made of AAC, a cement-based polymer layer fixed on the surface of one or more side-by-side wall panels to form an integral combined exterior wall panel, and the cement-based polymer layer fully covers at least one side of the one or more side-by-side wall panels.

Preferably, as an improvement, the cement-based polymer layer completely covers one wall surface and four side surfaces of one or more side-by-side wall panels, and the covered wall surface is the exterior wall surface.

Preferably, as an improvement, gaps are provided between the plurality of AAC wall panels, and the gaps are filled with cement-based polymer.

Preferably, as an improvement, the cement-based polymer layer has a uniform thickness.

Preferably, as an improvement, the thickness of the cement-based polymer layer is 10-20 mm.

Preferably, as an improvement, the cement-based polymer layer forms baffles at least on the upper, left and right sides of the composite exterior wall panel, and the baffles are parallel and flush with the exterior wall surface of the composite exterior wall panel.

Preferably, as an improvement, the thickness of the baffle is the same as the thickness of the cement-based polymer layer.

Preferably, as an improvement, the width of the baffle is 50-250 mm.

Preferably, as an improvement, the cement-based polymer is poured and connected to the surface of the AAC wallboard.

Preferably, as an improvement, the cement-based polymer is one of ultra-high performance concrete, ultra-high performance fiber-reinforced concrete, self-compacting high performance concrete or polymer fiber-reinforced cement-based composite materials.

Preferably, as an improvement, a hook is embedded in the cement-based polymer layer at the side end of the composite exterior wall panel, and the hook is perpendicular to the side of the composite exterior wall panel. The hook can facilitate the transportation and installation of the composite exterior wall panel, and can enhance the lateral connection strength and stability during the construction of the exterior wall.

Preferably, as an improvement, steps are provided at the joints of adjacent AAC wall panels, and the steps of two adjacent AAC wall panels are assembled into a groove, which is filled with cement-based polymer. This can prevent the formation of thermal bridges on the exterior wall panels, avoid condensation, mold, energy loss and other problems.

The principles and advantages of this solution include:

1. Enhanced mechanical properties: By fixing a layer of cement-based polymer on the surface of AAC wall panels, the overall compression, bending and impact resistance of the wall is increased. The cement-based polymer and AAC wall panels are tightly combined by pouring, which enhances the bonding force between the two, making the overall structure of the wall more stable, effectively improving the bearing capacity and earthquake resistance of the wall, and ensuring the stability and safety of the building's filling exterior walls and load-bearing walls.

2. Improve waterproof and moisture-proof performance: The coated cement-based polymer layer can effectively block the micropores on the surface of the AAC wallboard, enhance the waterproof and moisture-proof performance of the wall, effectively prevent water penetration, improve the wall's impermeability and moisture resistance, extend the service life of the building, and reduce maintenance costs.

3. Improve weather resistance and weathering resistance: The all-round cement-based polymer layer can effectively resist environmental factors such as ultraviolet radiation, rain and snow erosion, and temperature changes, making the combined exterior wall panels have better weather resistance, reducing the aging speed of the wall due to environmental factors, extending the service life of the wall, and reducing maintenance costs.

4. Improve the connection and finishing effects: This technical solution reduces the complexity of on-site construction by pre-coating the cement-based polymer layer in the factory. The surface of the composite wall panel is more suitable for subsequent pasting or painting of finishing materials, which can improve the adhesion between the finishing materials and the wall. At the same time, the cement-based polymer layer can be directly used as a high-quality finish, providing a smooth and hard surface, improving the finishing quality and construction efficiency.

5. Enhanced thermal insulation performance: AAC wall panels themselves have good thermal insulation performance, and the coated cement-based polymer layer can enhance its thermal insulation effect to a certain extent. Since the cement-based polymer layer also covers the side of the wall panel, the thermal insulation performance of the wall is comprehensively improved, which can not only effectively reduce the loss of heat through the outer wall, but also reduce the loss of heat through the side of the wall, further improve the energy efficiency of the building, and help the building achieve energy conservation and emission reduction goals.

6. Simplify construction and maintenance: The integrated design of the composite wall panels can simplify the on-site construction procedures and reduce the secondary plastering and finishing processes. At the same time, the polymer panels have high strength and hardness, forming a protective cover for the AAC wall panels. If damage or wear occurs, only local repair of the polymer layer is required.

7. Good integrity. By filling cement-based polymers between AAC wall panels, the gaps between walls can be eliminated, so that multiple wall panels are tightly combined in structure to form a whole, thereby improving the overall stability and bearing capacity of the wall.

8. Environmental protection and sustainability: The combination of cement-based polymers and AAC wall panels not only fully utilizes the lightweight and energy-saving characteristics of AAC wall panels, but also gives full play to the performance advantages of cement-based polymers, which is in line with the green, environmental protection and sustainable development trend of modern buildings.

9. The combined wall panels are assembled into load-bearing structures on site, and the baffles serve as the template for the cast-in-place nodes of the assembled walls, which improves the assembly efficiency and promotes the development of building industrialization.

In summary, this composite wall panel not only retains the advantages of AAC wall panels such as light weight, heat preservation, and sound insulation, but also significantly improves the physical properties and durability of the wall by adding a cement-based polymer layer, making it more widely used and practical in the field of building exterior walls.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of an embodiment of the present invention.

FIG. 2 is a schematic diagram of the hook arrangement in an embodiment of the present invention.

FIG3 is a schematic diagram of the structure of Embodiment 2 of the present invention.

FIG. 4 is a schematic diagram of the structure of Embodiment 3 of the present invention.

DETAILED DESCRIPTION

The following is further described in detail through specific implementation methods:

The reference numerals in the drawings of the specification include: wall panel 1, cement-based polymer layer 2, baffle 3, hook 4, groove 5.

Embodiment 1, as shown in Figures 1 and 2: A cement-based polymer and AAC combined exterior wall panel, comprising a wall panel 1 made of AAC, a cement-based polymer layer 2 is cast and fixed on the surface of three side-by-side wall panels 1 to form an integral combined exterior wall panel 1, the cement-based polymer layer 2 completely covers one wall surface and four side surfaces of the three side-by-side wall panels 1, and the covered wall surface is the exterior wall surface. Two side-by-side hooks 4 are embedded in the cement-based polymer layer 2 on the top of the combined exterior wall panel 1. Gaps are provided between the multiple AAC wall panels 1, and the gaps are filled with cement-based polymers. The thickness of the cement-based polymer layer 2 on the surface of the combined exterior wall panel 1 is uniformly 10-20 mm.

The cement-based polymer is one of ultra-high performance concrete, ultra-high performance fiber-reinforced concrete, self-compacting high performance concrete or polymer fiber-reinforced cement-based composite materials.

The cement-based polymer layer 2 forms a baffle 3 at least on the upper, left and right sides of the composite exterior wall panel 1. The baffle 3 is parallel and flush with the exterior wall surface of the composite exterior wall panel 1. The thickness of the baffle 3 is the same as that of the cement-based polymer layer 2, and the width of the baffle 3 is 50-250mm.

Embodiment 2: The difference between this embodiment and embodiment 1 is that, as shown in FIG. 3 , the combined exterior wall panel 1 is an integral AAC wall panel 1 .

Embodiment 3: The difference between this embodiment and embodiment 1 is that, as shown in FIG4, steps are provided at the joints of adjacent AAC wall panels 1, and the steps of two adjacent AAC wall panels 1 are assembled into a groove 5, and the groove 5 is filled with cement-based polymer. This can prevent the formation of thermal bridges on the exterior wall panels, avoid condensation, mold, energy loss and other problems.

The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and/or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, such as using two, four or more AAC wall panels in a single combined exterior wall panel, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims (10)

1. A cement-based polymer and AAC composite external wall panel, characterized in that: the composite external wall panel comprises wall panels made of AAC, wherein cement-based polymer layers are fixed on the surfaces of one or more side-by-side wall panels to form a whole, and the cement-based polymer layers fully cover at least one side surface of the one or more side-by-side wall panels.

2. The cement-based polymer and AAC composite side fascia according to claim 1, wherein: the cement-based polymer layer fully covers one wall surface and four side surfaces of one or more side-by-side wallboards, and the covered wall surface is an outer wall surface.

3. A cement-based polymer and AAC composite side fascia according to claim 2, wherein: gaps are arranged among the AAC wallboards, and cement-based polymers are filled in the gaps.

4. A cement-based polymer and AAC composite side fascia according to claim 3, wherein: the cement-based polymer layer has a uniform thickness.

5. The cement-based polymer and AAC composite side fascia according to claim 4, wherein: the thickness of the cement-based polymer layer is 2-4mm.

6. The cement-based polymer and AAC composite side fascia according to claim 5, wherein: the cement-based polymer layer forms a baffle plate on at least the upper, left and right side surfaces of the combined external wall board, and the baffle plate is parallel and level with the external wall surface of the combined external wall board.

7. The cement-based polymer and AAC composite side fascia according to claim 6, wherein: the thickness of the baffle is the same as the thickness of the cement-based polymer layer.

8. The cement-based polymer and AAC composite side fascia according to claim 7, wherein: the width of the baffle plate is 50-250mm.

9. The cement-based polymer and AAC composite side fascia according to claim 8, wherein: the cement-based polymer is poured and connected on the surface of the AAC wallboard.

10. The cement-based polymer and AAC composite side fascia according to claim 9, wherein: the cement-based polymer is one of ultra-high performance concrete, ultra-high performance fiber reinforced concrete, self-compacting high performance concrete or polymer fiber reinforced cement-based composite material.