Lightweight wall back plug leakage prevention structure

Abstract

The utility model relates to a kind of light wall body back plug mouth anti-seepage structure, using aerated concrete block to carry out heteromorphic symmetry cutting forming, this wedge shape is similar to "sofa", its inside height is higher than outside, and the outer width of open portion is narrow inside.Combining outside using fine stone concrete to carry out plug joint treatment, inside then applies polyurethane foaming agent, the combined structure can significantly improve the waterproof performance of outer wall back plug mouth position.It is suitable for main structure filling wall masonry construction and back plug mouth construction, especially suitable for the building masonry outer wall with anti-seepage demand.The utility model has the advantages that:structure design is reasonable, using a heteromorphic cutting "sofa-like" block as top block, form the back plug mouth of inside high outside low.Outside using dry hard fine stone concrete plug joint, inside adopts polyurethane foaming agent, constructs threefold waterproof anti-seepage system, can effectively improve the anti-seepage effect of back plug mouth.

Description

Technical Field

[0001] This utility model relates to a lightweight wall post-sealing anti-leakage structure, specifically an anti-leakage structure based on aerated concrete block irregularly cut wedges used in the construction of the main structure infill wall masonry and post-sealing construction, belonging to the field of building engineering technology. Background Technology

[0002] For the construction of the main structural infill wall masonry and the subsequent sealing of the masonry exterior wall of a building, there are two main existing construction methods: The first method requires a 140-170mm high backfill opening, typically using solid concrete bricks laid at an angle (long side facing outwards). This method is mainly suitable for interior infill walls. The key technology lies in adjusting the masonry module to ensure a tight connection with the upper structural beams, improving seismic performance and enhancing the overall earthquake resistance of the masonry wall. Its disadvantages include smaller brick sizes, more mortar joints, a larger workload for manual construction, and the fullness of the mortar joints being highly dependent on the skill and responsibility of the masons. Specifically, this backfilling technique requires the bricks to be laid at an angle, creating a cross pattern, to improve the ability of the backfill to transfer horizontal seismic loads. This method is particularly useful when the infill wall is made of lightweight aerated concrete blocks. However, due to the small size of the solid bricks, the backfill opening of one wall often requires dozens of solid bricks, resulting in numerous irregular horizontal and vertical mortar joints. Furthermore, the varying levels of responsibility and skill among bricklayers can easily lead to quality issues such as blind joints, false joints, and light-transmitting joints, resulting in poor quality stability and potential leakage problems. If used for exterior walls, this makes them extremely prone to leakage, and once leakage occurs, it is difficult to repair using simple grouting methods, increasing the uncertainty of construction.

[0003] The second method requires a 50mm high opening for sealing and further layout refinement. The top layer of blocks needs to be cut to control the reserved height. The biggest problem lies in the sealing process. For a 200mm thick aerated concrete block wall, fine aggregate concrete needs to be used simultaneously or in two stages on both the inner and outer sides of the wall. Dry-hardened fine aggregate concrete must be used to fill the gap completely, and the outer opening is then smoothed with cement mortar. This method requires a high level of skill, and the amount of work for sealing is significant. Similar to sloping brick top laying, the tightness of the sealing is greatly affected by the skill and responsibility of the bricklayers, resulting in poor quality stability and the common problem of incomplete sealing, which easily leads to leakage. Utility Model Content

[0004] This utility model proposes a lightweight wall sealing structure to prevent leakage, which aims to overcome the above-mentioned shortcomings of the existing technology and improve the leakage prevention effect.

[0005] The technical solution of this utility model is a lightweight wall sealing and waterproofing structure. It utilizes aerated concrete blocks cut into irregular, symmetrical shapes resembling a sofa, with an internal height higher than the external surface and an open section that is wider on the outside and narrower on the inside. Combined with fine aggregate concrete sealing on the outer side and polyurethane foaming on the inner side, this combined structure significantly improves the waterproofing performance of the sealing area on the exterior wall. It is suitable for the construction of infill masonry walls in the main structure and for sealing the sealing areas, and is particularly suitable for masonry exterior walls of buildings requiring waterproofing.

[0006] Specifically, its structure includes structural beams / top slabs, aerated concrete block infill walls, fine aggregate concrete caulking, and foaming agent caulking. The top of the aerated concrete block infill wall connects to the bottom of the structural beams / top slabs. The top of the aerated concrete block infill wall is a standard height irregularly cut block. Below the standard height irregularly cut block are non-standard height blocks. Below the non-standard height blocks are several standard height blocks. The height of the non-standard height blocks is less than that of the standard height blocks. The top surface of the standard height irregularly cut block is higher on the side closer to the interior and lower on the side closer to the exterior, with a slope between the two sides. The higher side of the top surface of the standard height irregularly cut block is caulking with foaming agent between it and the bottom of the structural beams / top slab. The slope and the lower side of the top surface of the standard height irregularly cut block are caulking with fine aggregate concrete between them and the bottom of the structural beams / top slabs.

[0007] Preferably, the standard height block irregular cut body is symmetrically cut from a standard height block, and its longitudinal section consists of a rectangular part and an isosceles trapezoidal part, with the right-angled leg of the isosceles trapezoidal part and the short side of the rectangular part located on a straight line.

[0008] Preferably, the standard height block has a length of 600mm * height of 240mm * width of 200mm, and the non-standard height block has a length of 600mm * height of 100≤h≤240mm * width of 200mm. The irregular cut body of the standard height block has a length of 600mm and a width of 200mm, a rectangular part with a height of 100mm, and an isosceles trapezoidal part with a height of 40mm and an upper base length of 80mm.

[0009] Preferably, the fine aggregate concrete caulking compound is C20 dry-hard fine aggregate concrete.

[0010] Preferably, the foaming agent used for sealing the gaps is a polyurethane foaming agent.

[0011] The advantages of this utility model are: It features a reasonable structural design, employing an irregularly cut, sofa-like block as the top masonry block to form a recessed opening that is higher on the inside and lower on the outside. The outer side is sealed with dry-hardened fine aggregate concrete, while the inner side uses polyurethane foam, constructing a triple waterproof and leak-proof system that effectively improves the leak-proof performance of the recessed opening. Specifically: 1) Standard-length blocks are symmetrically cut, making material sourcing convenient and block construction easy. There is no need to use solid bricks or inclined bricks for top laying, thus reducing the risk of leakage caused by more mortar joints and incomplete mortar joints due to the small size of solid bricks and the need for multiple inclined bricks.

[0012] 2) After the irregularly cut wedge-shaped masonry is laid on top, it forms a funnel shape with a higher inner surface and a lower outer surface, which facilitates the sealing of the gaps with dry-hardened fine aggregate concrete from the outside. Due to the obstruction of the internal bevel, reverse compression is generated, making the sealing more compact and significantly improving the anti-leakage effect.

[0013] 3) A 20mm high gap is formed on the inside, which provides the optimal thickness for applying the foaming agent compared to the 50mm backfill opening. This ensures the gap is filled tightly, especially after the fine aggregate concrete on the outside is filled before applying the polyurethane foaming agent, resulting in a better overall compaction and superior leak-proof performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the lightweight wall panel back-sealing leak-proof structure of this utility model.

[0015] Figure 2 yes Figure 1 A schematic diagram of the structure of a non-standard height block cut body.

[0016] Figure 3 This is a schematic diagram of the working state of the lightweight wall back-sealing anti-leakage structure of this utility model.

[0017] In the diagram, 1 is the structural beam / top slab, 2 is the aerated concrete block infill wall, 21 is the standard height block, 22 is the non-standard height block, 23 is the irregularly cut standard height block, 231 is the rectangular section, 232 is the isosceles trapezoidal section, 3 is the fine aggregate concrete caulking, 4 is the foaming agent caulking, 5 is the interior, 6 is the exterior, 7 is the rainwater movement trajectory, 8 is the first line of defense, and 9 is the second line of defense. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to embodiments and specific implementation methods.

[0019] like Figure 1As shown, a lightweight wall structure with a backfill for preventing leakage includes a structural beam / top slab 1, an aerated concrete block infill wall 2, a fine aggregate concrete sealant 3, and a foaming agent sealant 4. The top of the aerated concrete block infill wall 2 is connected to the bottom of the structural beam / top slab 1. The top of the aerated concrete block infill wall 2 is a standard height irregularly cut block 23. Below the standard height irregularly cut block 23 are non-standard height blocks 22. Below the non-standard height blocks 22 are several standard height blocks 21. The height of the non-standard height blocks 22 is less than the height of the standard height blocks 21. The top surface of the standard height irregularly cut block 23 is higher on the side closer to the interior (5) and lower on the side closer to the exterior (6), with a slope between the two sides. The foaming agent sealant 4 is located between the higher side of the top surface of the standard height irregularly cut block 23 and the bottom of the structural beam / top slab 1. The fine aggregate concrete sealant 3 is located between the slope and the lower side of the top surface of the standard height irregularly cut block 23 and the bottom of the structural beam / top slab 1.

[0020] like Figure 2 As shown, the standard height block irregular cut body 23 is symmetrically cut from the standard height block 21. Its longitudinal section consists of a rectangular part 231 and an isosceles trapezoidal part 232. The right-angled leg of the isosceles trapezoidal part and the short side of the rectangular part 231 are on a straight line.

[0021] like Figure 3 As shown, the trajectory of the leaking water follows the principle of capillary action, with the water seeping along the direction of decreasing pore saturation and humidity, while also adhering to the principle of gravity flow, slowly sinking under the influence of gravity. However, if a slope is artificially created along this trajectory, forming a gradient, the water will preferentially flow by gravity and be blocked by the slope, thus significantly slowing down the leakage rate. Furthermore, the pre-reserved cavity structure, with its higher inner and lower outer sections, creates a continuously narrowing funnel shape at the sealing area. This helps the pore saturation quickly reach internal and external equilibrium, forming reverse pressure and effectively hindering continuous water leakage.

[0022] Meanwhile, a gap is formed above the irregularly shaped aerated concrete block inside the post-sealing opening, which is then filled with foaming agent. This combination of measures creates a multi-layered, tightly sealed anti-seepage system that effectively reduces or even eliminates leakage at the post-sealing opening of the exterior wall.

[0023] As one embodiment, a standard aerated concrete block (standard height block) with dimensions of 600mm long * 240mm high * 200mm wide is used. It is symmetrically cut along its side in a "Z" shape into two identical wedge-shaped blocks (standard height block irregular cut body 23) for the top lining of the subsequent sealing section, thus forming a funnel-shaped pre-reserved opening that is higher on the inside and lower on the outside. C20 dry-hardened fine aggregate concrete is used to seal the outer opening. After it dries and hardens, polyurethane foam is applied to the inner side.

[0024] Specifically, non-standard height blocks are aerated concrete blocks with a length of 600mm * height of 100≤h≤240mm * width of 200mm. Standard height blocks are irregularly cut bodies 23 with a length of 600mm and a width of 200mm, a rectangular part 231 with a height of 100mm, and an isosceles trapezoidal part 232 with a height of 40mm and an upper base length of 80mm.

[0025] This method is an improvement on the existing technology that uses a flat plugging method to process the 50mm high back plug opening. The improvements include: 1. The top layer of masonry uses irregularly cut wedge-shaped blocks instead of standard or non-standard height flat blocks, forming a flared opening that is higher on the inside and lower on the outside. When rainwater leaks, under the action of gravity, the weak permeability of the aerated concrete block material can effectively prevent most of the rainwater from seeping into the masonry slope.

[0026] 2. The resulting backfill opening has a small inner opening (20mm) and a large outer opening (60mm). When using fine aggregate concrete for compaction, it is easier to compact than a flat opening, thus significantly improving the anti-leakage effect.

[0027] 3. The inner opening is sealed with polyurethane foam, and the outer opening is sealed after it is filled. The expansion property of the foam is used to form a dense waterproof cover, similar to the sealing treatment between the window frame and the window opening.

[0028] In summary, by using simple irregularly shaped wedges to create a funnel effect, combined with the traditional method of sealing with dry-hardened fine aggregate concrete, and by drawing on the polyurethane foam treatment technology between the window frame and the opening, a triple-effective anti-leakage defense line was formed, which greatly improved the waterproofing quality of the post-sealing area.

[0029] Compared with the two existing technologies, it has the following significant advantages: 1. Using large-sized blocks for the top layer significantly reduces the number of mortar joints due to the larger block size. For example, with a length of 600mm, using solid small bricks would result in at least 10 vertical mortar joints and 20 triangular horizontal mortar joints. However, using blocks as the top layer reduces the number of mortar joints and significantly improves the anti-leakage effect.

[0030] 2. Irregularly shaped blocks are used for top-laying, creating a "higher inside, lower outside; wider outside, narrower inside" filling shape. As shown in the detailed drawing, the outer dry-hardened fine aggregate concrete only needs to be filled to a width of 120mm, narrowing the width while increasing the height to 60mm. A slope is also provided at the front end, resulting in higher overall filling reliability. Furthermore, the internal height is only 20mm, which is the ideal size for applying the foaming agent. The interior is filled with polyurethane foaming agent. Through the extrusion of the foaming agent, the structural wall and masonry wall are bonded, effectively reducing the possibility of rainwater leakage. Refer to the construction effect of "door and window frames".

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A lightweight wall panel sealing structure for preventing leakage, characterized in that, The structure includes a structural beam / top slab (1), an aerated concrete block infill wall (2), fine aggregate concrete caulking (3), and foaming agent caulking (4). The top of the aerated concrete block infill wall (2) is connected to the bottom of the structural beam / top slab (1). The top of the aerated concrete block infill wall (2) is a standard height irregularly cut block (23). Below the standard height irregularly cut block (23) are non-standard height blocks (22). Below the non-standard height blocks (22) are several standard height blocks (21). The non-standard height blocks (22) are... 2) The height is less than that of the standard height block (21). The top surface of the standard height block irregular cut body (23) is higher on the side closer to the interior (5) and lower on the side closer to the exterior (6). There is a slope between the two sides. The higher side of the top surface of the standard height block irregular cut body (23) is sealed with foaming agent (4) between it and the bottom of the structural beam / top plate (1). The slope of the top surface and the lower side of the standard height block irregular cut body (23) are sealed with fine stone concrete (3) between them and the bottom of the structural beam / top plate (1).

2. The lightweight wall sealing and leak-proof structure as described in claim 1, characterized in that, The standard height block irregular cut body (23) is symmetrically cut from the standard height block (21). Its longitudinal section consists of a rectangular part (231) and an isosceles trapezoidal part (232). The right-angled leg of the isosceles trapezoidal part and the short side of the rectangular part (231) are on a straight line.

3. The lightweight wall sealing and leak-proof structure as described in claim 2, characterized in that, The standard height block (21) has a length of 600mm, a height of 240mm, and a width of 200mm. The non-standard height block (22) has a length of 600mm, a height of 100≤h≤240mm, and a width of 200mm. The standard height block irregular cut body (23) has a length of 600mm and a width of 200mm, a rectangular part (231) with a height of 100mm, and an isosceles trapezoidal part (232) with a height of 40mm and an upper base length of 80mm.

4. The lightweight wall sealing and leak-proof structure as described in claim 1, characterized in that, The fine aggregate concrete grout (3) is C20 dry-hard fine aggregate concrete grout.

5. The lightweight wall sealing and leak-proof structure as described in claim 1, characterized in that, The foaming agent used for sealing the gap (4) is a polyurethane foaming agent.

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