Polymer and AAC combined outer wall splicing type internal corner structure

Abstract

The utility model relates to the field of assembly type buildings, and discloses a polymer and AAC combined outer wall splicing type internal corner structure which comprises two outer wall plates, and each outer wall plate comprises one or more AAC plates which are fixedly connected into a whole through cement-based polymers on the surfaces. The cement-based polymer in the external wall boards at least wraps the side face of the AAC board and one wall face to form a waterproof layer, the wall face, covered with the cement-based polymer, of the external wall boards is an outer wall face, the side ends of the two external wall boards are connected with connector boards, the connector boards are as high as the external wall boards, and the side ends, provided with the connector boards, of the two external wall boards abut against each other. The side end of one outer wall plate is flush with the outer wall face of the other outer wall plate, so that an internal corner is formed between the outer wall faces, the two connector plates abut against each other vertically, an internal corner cast-in-place space is defined by the two connector plates and the side ends of the two outer wall plates, and a cement-based polymer is poured in the internal corner cast-in-place space. According to the utility model, the internal corner connection of the cement-based polymer and the AAC combined outer wall can be realized.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated buildings, in particular to a polymer and AAC combined exterior wall splicing type negative corner structure. Background Art

[0002] AAC, short for Autoclaved Aerated Concrete, is a new lightweight, porous building material. AAC is made from raw materials such as silica sand, cement, lime, and gypsum, through a process that includes batching, mixing, pouring, pre-curing, cutting, and autoclaving. During the production process, the addition of foaming agents such as aluminum powder creates a large number of evenly distributed, closed micropores within the concrete, significantly reducing the material's density and improving its thermal insulation properties while maintaining high strength. AAC offers numerous advantages, including light weight, high strength, excellent thermal insulation, superior sound insulation, superior seismic performance, easy construction, and environmental sustainability. It is widely used in various building structures, including walls, floor slabs, roof panels, and fireproof barriers. In the modern construction industry, AAC is gaining increasing application and popularity as a green, energy-saving building material. AAC panels are widely used in modern architecture due to their lightweight, thermal insulation, fire resistance, sound insulation, environmental friendliness, ease of construction, economical cost-effectiveness, and recyclability. However, due to its porous structural characteristics, its waterproof and moisture-proof properties are 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.

[0003] A novel technology has been proposed that combines AAC with cement-based polymers to form wall panels. By coating the surface of one or more AAC panels with the cement-based polymer, the resulting composite wall significantly improves anti-seepage performance and structural strength compared to single AAC wall panels, while also incorporating many of the advantages of AAC. This represents a promising new type of prefabricated building material. However, the existing technology lacks practical application technology for this composite wall, and there are no references to the appropriate corner structures for exterior walls. Therefore, a corner construction technology for this cement-based polymer and AAC composite exterior wall is urgently needed. Utility Model Content

[0004] The utility model aims to provide a polymer and AAC combined exterior wall splicing type negative corner structure, so as to realize the corner connection of the cement-based polymer and AAC combined exterior wall.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical solution: a polymer and AAC combined exterior wall splicing type negative corner structure, comprising two exterior wall panels, the exterior wall panels comprising one or more side-by-side AAC panels fixed together on the surface with a cement-based polymer, the cement-based polymer in the exterior wall panels at least covering the side surfaces and one wall surface of the AAC panels to form a waterproof layer, the wall surface after the exterior wall panels are covered with the cement-based polymer is the exterior wall surface, the side ends of the two exterior wall panels are connected to a joint plate, the joint plate and the exterior wall panels have the same height, the side ends of the two exterior wall panels with the joint plates installed are abutted against each other, the side end of one exterior wall panel is flush with the exterior wall surface of the other exterior wall panel, so that a negative corner is formed between the exterior wall surfaces, the two joint plates are vertically abutted against each other, the two joint plates and the side ends of the two exterior wall panels enclose a negative corner cast-in-place space, and the negative corner cast-in-place space is cast with cement-based polymer.

[0006] Preferably, as an improvement, the joint plate is an AAC board, which is connected to the AAC board in the exterior wall panel. Using AAC boards as joint plates provides better insulation, heat insulation, fire protection, and sound insulation at indoor wall corners, preventing the formation of cold bridges. The space between the joint plate and the side of the exterior wall panel is filled with a cast-in-place cement-based polymer, ensuring anti-seepage and windproof performance at the inner corner.

[0007] Preferably, as an improvement, the joint plate is flush with the inner wall surface of the exterior wall panel, so that the indoor wall corners are more easily kept flat after decoration, which is conducive to ensuring the beautiful indoor appearance.

[0008] Preferably, as an improvement, the thickness of the joint plate is 2-5 cm. This helps to ensure that the cast-in-place space of the negative corner is large enough, and helps to ensure the anti-seepage, windproof and earthquake-resistant performance of the negative corner.

[0009] Preferably, as an improvement, the width of the joint plate is 40-250 cm. This can match the thickness of the exterior wall in different situations and ensure that the joint plate can enclose the inner corner cast-in-place space.

[0010] Preferably, as an improvement, the joint plate and the exterior wall panel are bonded together. The connection between the wall panels can be achieved by selecting an adhesive of matching material, which makes the appearance more regular and beautiful.

[0011] Preferably, as an improvement, the joint plate and the outer wall plate are connected via a connector. Connection via the connector can ensure sufficient strength of the connection between the joint plate and the outer wall plate, ensuring that the joint plate connection is stable and reliable.

[0012] Preferably, as an improvement, the connector includes a connector plate having at least two connection holes formed therein, fasteners being inserted through the holes in the connector plate, and fasteners being embedded in the exterior wall panel. The connector plate and the exterior wall panel are connected by the connection between the connector plate and the fasteners. Such a connector has a simple structure, a small size, occupies little space, is easy to connect and operate, and is highly convenient.

[0013] Preferably, as an improvement, the thickness of the waterproof layer formed by the cement-based polymer is 2-4 mm.

[0014] The principles and advantages of this solution are as follows: In actual application, the exterior wall panel consists of a central AAC sheet and a cast outer layer of cement-based polymer. The cement-based polymer improves the waterproof and anti-seepage properties of the exterior wall panel's facade, and enhances the overall structural strength of the exterior wall panel, providing better earthquake and crack resistance. Furthermore, the internal AAC sheet ensures that the overall exterior wall panel is lighter than traditional and other exterior wall panels under equivalent conditions. It also offers thermal insulation, heat insulation, fire resistance, sound insulation, environmental friendliness, convenient construction, and economical efficiency.

[0015] A waterproof layer formed by cement-based polymers is used between the exterior wall panels to form a negative corner. A joint plate is then installed on the side ends of the exterior wall panels on the inside of the joint. The joint plates on the two exterior wall panels are then joined together on the inside of the building to form a wall corner. The inner side of the joint plate and the side ends of the exterior wall panels enclose a cast-in-place space for the negative corner, and the cement-based polymer is re-cast to form a connection structure for the negative corner. The cement-based polymer and the waterproof layer material are consistent. In this way, the cast-in-place cement-based polymer and the waterproof layer of the exterior wall panels are integrated to ensure a strong bond between the two adjacent exterior wall panels. The resulting exterior wall negative corner structure of the cement-based polymer and AAC combination has better overall structural stability, high structural strength, good earthquake and crack resistance, and better durability. The negative corner joint between the two exterior wall panels is filled and sealed with cast-in-place cement-based polymer, which improves sealing, waterproof and windproof performance, and eliminates the risk of leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of Example 1 of the present utility model.

[0017] Figure 2 This is a schematic structural diagram of the exterior wall panel in Example 1 of the present utility model.

[0018] Figure 3 This is a structural diagram of Example 2 of the present utility model. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The reference numerals in the drawings of the specification include: exterior wall panel 1, joint plate 2, waterproof layer 3, AAC board 4, negative corner cast-in-place space 5, exterior wall surface 6, connection plate 7, bolt 8.

[0021] Example 1, basically as in the attached Figure 1 Shown: A polymer and AAC combined exterior wall splicing type negative corner structure, including two exterior wall panels 1, combined Figure 2 As shown, the exterior wall panel 1 comprises three side-by-side AAC panels 4, joined together at their surfaces with a cement-based polymer. The cement-based polymer in the exterior wall panel 1 covers at least the sides of the AAC panels 4 and one wall surface, forming a waterproof layer 3. The thickness of the cement-based polymer waterproof layer 3 is 2-4 mm. The surface of the exterior wall panel 1 covered with the cement-based polymer is the exterior wall surface 6. Joint plates 2 are bonded to the sides of the two exterior wall panels 1 with adhesive. These joint plates 2 are AAC panels with a thickness of 2-5 cm and a width of 40-250 cm. They are the same height as the exterior wall panels 1 and are flush with the interior wall surface of the exterior wall panels 1. The side ends of the two exterior wall panels 1 with the joint plates 2 installed are abutted against each other, and the side end of one exterior wall panel 1 is flush with the exterior wall surface 6 of the other exterior wall panel 1, so that a right-angled negative corner is formed between the exterior wall surfaces 6. The two joint plates 2 are vertically abutted against each other, and the two joint plates 2 and the side ends of the two exterior wall panels 1 enclose a negative corner cast-in-place space 5, in which a cement-based polymer is poured.

[0022] 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.

[0023] The specific implementation process is as follows: AAC panels 4 and cement-based polymers are prefabricated in a workshop to form exterior wall panels 1. Joint panels 2 are then processed in the workshop and transported to the construction site as wall panel units for prefabricated buildings to construct the building's exterior walls. During construction, when constructing exterior wall corners, the side walls and exterior wall surfaces 6 of the corresponding exterior wall panels 1 are cleaned. The exterior wall panels 1 are then hoisted to the desired location and adjusted so that the two exterior wall panels 1 are arranged at right angles. After positioning, the side ends of the two exterior wall panels 1 are perpendicularly butted against each other, forming a 90° inner corner between the two exterior wall surfaces 6. Joint panels 2 are then bonded to the side ends of the exterior wall panels 1, or pre-bonded, so that the two joint panels 2 are perpendicularly butted against each other indoors to form a 90° wall angle. The joint panels 2 and the side ends of the exterior wall panels 1 enclose a square columnar inner corner cast-in-place space 5. Then, a cement-based polymer is cast in the cast-in-place space 5 of the negative corner. The cast-in-place cement-based polymer maintains consistency with the material of the waterproof layer 3 to ensure that the negative corner between the two adjacent exterior wall panels 1 is firmly bonded. The cement-based polymer and AAC combined exterior wall negative corner structure has better overall structural stability, high structural strength, good seismic and crack resistance, better durability, better sealing, good waterproof and windproof performance, and no risk of leakage.

[0024] The main body of the exterior wall panel 1 consists of a central AAC board 4 and a cast outer cementitious polymer waterproof layer 3. The cementitious polymer improves the waterproof and anti-seepage properties of the exterior wall panel 1, and enhances its overall structural strength, providing enhanced earthquake and crack resistance. Furthermore, the internal AAC board ensures that the exterior wall panel 1 is lighter than traditional and other exterior wall panels of the same weight. It also offers thermal insulation, fire resistance, sound insulation, environmental friendliness, ease of construction, and economical efficiency. A negative corner is formed between the exterior wall panels 1 by a waterproof layer 3 formed by a cement-based polymer, and then a joint plate 2 is set at the joint of the exterior wall panels 1, and the joint plates 2 on the two exterior wall panels 1 are enclosed to form a cast-in-place space, and then the cement-based polymer is poured again to form a connection structure of the negative corner. The cement-based polymer and the waterproof layer 3 materials are consistent. In this way, the cast-in-place cement-based polymer and the waterproof layer 3 of the exterior wall panel 1 are integrated, which can ensure a firm bond between the two adjacent exterior wall panels 1. The formed cement-based polymer and AAC combined exterior wall negative corner structure has better overall structural stability, high structural strength, good seismic and crack resistance, better durability, better sealing, good waterproof and windproof performance, and no risk of leakage.

[0025] Example 2: This example differs from Example 1 only in that Figure 3 As shown, the connector plate 2 is connected to the AAC board 4 in the exterior wall panel 1 via a connector. The connector includes a connector plate 7 with two connection holes. Bolts 8 are inserted through holes in the connector plate 2. Bolts 8 are pre-embedded in the AAC board 4 of the exterior wall panel 1. The connection hole at one end of the connector plate 7 is inserted over the bolt 8 on the connector plate 2 and tightened with a nut. The connection hole at the other end of the connector plate 7 is inserted over the pre-embedded bolt 8 on the exterior wall panel 1 and tightened with a nut. The connection between the connector plate 2 and the exterior wall panel 1 is achieved through the connection between the connector plate 7 and the fastener. This connector has a simple structure, a small size, takes up little space, and is easy to connect and operate. It is convenient and provides a stable and reliable connection between the connector plate 2 and the exterior wall panel 1.

[0026] The above description is merely an embodiment of the present invention, and the commonly known specific technical solutions and / or features of the solution are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be considered as the scope of protection 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 claimed in 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

1. A polymer and AAC combined exterior wall splicing type negative corner structure, characterized by: The invention comprises two exterior wall panels, wherein the exterior wall panels include one or more side-by-side AAC panels fixedly connected as a whole with cement-based polymer on the surface. The cement-based polymer in the exterior wall panels covers at least the side surfaces and one wall surface of the AAC panels to form a waterproof layer. The wall surface after the exterior wall panels are covered with the cement-based polymer is the exterior wall surface. The side ends of the two exterior wall panels are connected to joint plates. The joint plates are at the same height as the exterior wall panels. The side ends of the two exterior wall panels with the joint plates are abutted against each other. The side end of one exterior wall panel is flush with the exterior wall surface of the other exterior wall panel, so that a negative corner is formed between the exterior wall surfaces. The two joint plates are vertically abutted against each other. The two joint plates and the side ends of the two exterior wall panels enclose a negative corner cast-in-place space, and the negative corner cast-in-place space is cast with cement-based polymer.

2. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 1, characterized in that: The joint plate is an AAC plate, and the joint plate is connected to the AAC plate in the exterior wall panel.

3. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 2, characterized in that: The joint plate is flush with the inner wall surface of the exterior wall panel.

4. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 3, characterized in that: The thickness of the joint plate is 2-5 cm.

5. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 4, characterized in that: The width of the joint plate is 40-250cm.

6. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 5, characterized in that: The joint plate is bonded to the exterior wall panel.

7. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 5, characterized in that: The joint plate and the exterior wall plate are connected via connecting pieces.

8. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 7, characterized in that: The connecting piece includes a connecting plate with at least two connecting holes. Fasteners are inserted through the holes in the connecting plate. Fasteners are embedded in the exterior wall panel. The connection between the connecting plate and the fasteners is used to realize the connection between the connecting plate and the exterior wall panel.

9. The polymer and AAC combined exterior wall splicing type negative corner structure according to claim 1, characterized in that: The waterproof layer formed by cement-based polymer has a thickness of 2-4mm.

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