Plugging structure for reserved hole of filler wall

Abstract

The utility model discloses a plugging structure of a reserved hole of an infilled wall, which is characterized in that at least one plugging body is formed by stacking plugging blocks in the reserved hole of the infilled wall, a gap is reserved between the plugging bodies or / and the wall of the reserved hole, and the gap is filled with polyurethane foaming agent. The polyurethane foaming agent expands, so that the gaps are filled with the polyurethane foaming agent, the plugging blocks and the wall of the reserved hole tightly abut against each other, and the reserved hole is plugged; the plugging structure for the reserved hole of the filler wall does not need pouring, mortar and water and electricity, not only is simple in structure and low in construction labor intensity, but also does not cause secondary pollution to the wall surface and the bottom surface, in addition, due to the fact that the rubber bricks are adopted as the plugging blocks and the polyurethane foaming agent is used for filling, materials for plugging are light in weight, the main material is waste rubber, and the cost is low. Energy conservation and emission reduction are facilitated, industrial pollution is reduced, carbon emission is reduced, transportation and construction difficulty is lowered, and construction efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of filling and repairing gaps in fixed buildings, specifically relating to a sealing structure for pre-reserved holes in infill walls. Background Technology

[0002] In buildings, walls are classified as load-bearing walls and non-load-bearing walls according to their load-bearing capacity. Non-load-bearing walls include partition walls, infill walls, and curtain walls. Infill walls are walls constructed between beams and columns of the building's structural frame using bricks or lightweight concrete blocks. During construction, openings are often made in infill walls for ease of construction. These openings may be for construction workers to pass through and transport construction materials, or for pipe installation or for equipment components to pass through the wall. For example, Chinese Patent CN110725561B discloses a method for creating openings in infill walls. After the relevant construction operations are completed, these reserved holes need to be sealed. Currently, the same materials as the infill wall are generally used to seal the reserved holes by casting with formwork or by using shale solid bricks and other blocks with mortar. For example, Chinese Patent CN117605164A discloses a method for sealing reserved hole gaps. However, in the later stages of construction, not only are the blocks and mortar difficult to transport because most of the construction structures and passages are removed or closed, but the casting and mortar construction will also cause secondary pollution to the wall and bottom surfaces, which can easily lead to multiple reworks. Therefore, this type of method has the problems of high labor intensity and slow construction. There is also a reserved hole sealing structure for external walls disclosed in Chinese Patent CN212248722U. This solution is for pipe reserved holes, which not only has many components and complex structure, but is also only applicable to the case of a single pipe passing through the pipe reserved hole in the center, and has a narrow scope of application.

[0003] Therefore, it is necessary to design a sealing structure for reserved holes in infill walls that is simple to construct and has a wide range of applications, so as to reduce the difficulty of sealing reserved holes, improve construction efficiency, and achieve the effects of waste utilization, energy conservation and emission reduction, and carbon emission reduction. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the purpose of this utility model is to provide a sealing structure for reserved holes in infill walls, which solves the technical problems of complex and slow sealing of reserved holes, and achieves the effects of reducing the difficulty of sealing reserved holes, improving construction efficiency, and realizing energy conservation, environmental protection, waste utilization and carbon emission reduction.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A sealing structure for a pre-reserved hole in a filling wall includes a filling wall with a pre-reserved hole. The pre-reserved hole contains at least one sealing body formed by stacking sealing blocks. There is a gap between the sealing bodies and / or the wall of the pre-reserved hole. The gap formed by the gap is filled with polyurethane foam. The polyurethane foam and the sealing body seal the pre-reserved hole.

[0007] Furthermore, rubber bricks are used for the sealing blocks.

[0008] Optionally, the reserved opening has a sealing body, which is formed by stacking sealing blocks from bottom to top, and the gap between the sealing body and the wall of the reserved opening is located above the sealing body.

[0009] The distance between the upper side of the sealing body and the reserved hole wall is 30-50mm.

[0010] Optionally, a pipe is installed in the reserved hole, and the sealing body is located on one or more sides of the pipe.

[0011] The pipe is located at the bottom of the reserved hole, and there is a sealing body in the reserved hole located above the pipe. The gap between the sealing body and the wall of the reserved hole is located below the sealing body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. The sealing structure for the reserved opening in the infill wall described in this utility model involves stacking sealing blocks to form at least one sealing body within the reserved opening in the infill wall. A gap is reserved between the sealing bodies and / or the reserved opening wall, and this gap is filled with polyurethane foam. The polyurethane foam expands, not only filling the gap but also causing the sealing blocks to fit tightly against each other and the reserved opening wall, thereby sealing the reserved opening. The sealing structure for the reserved opening in the infill wall does not require pouring, mortar, or water and electricity. It is not only simple in structure and has low labor intensity during construction, but also does not cause secondary pollution to the wall and bottom surfaces.

[0014] 2. The sealing structure for the reserved holes in the infill wall described in this utility model benefits from the use of rubber bricks as sealing blocks and the filling with polyurethane foam. The sealing materials are lightweight, which helps to reduce transportation and construction difficulties and improve construction efficiency. Therefore, the sealing structure for the reserved holes in the infill wall described in this utility model can effectively solve the current problems of complex and slow progress in sealing reserved holes. In addition, the main material of rubber bricks is waste rubber, which is conducive to achieving the effects of waste utilization, energy conservation and emission reduction, and carbon emission reduction. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the construction reserved hole described in the embodiment;

[0016] Figure 2 This is a schematic diagram illustrating the process of piling up materials to form a sealing structure in a pre-reserved construction hole, as shown in the embodiment.

[0017] Figure 3 This is a first schematic diagram of the sealing structure corresponding to the pre-reserved opening in the construction example;

[0018] Figure 4 This is a second schematic diagram of the sealing structure corresponding to the pre-reserved opening in the embodiment;

[0019] Figure 5 This is a schematic diagram of the pre-reserved hole for the pipeline as described in the embodiment;

[0020] Figure 6 This is a schematic diagram illustrating the process of piling up materials to form a seal in the pre-reserved hole of the pipeline in the embodiment.

[0021] Figure 7 This is a third schematic diagram of the sealing structure corresponding to the reserved hole in the pipeline in the embodiment;

[0022] Figure 8 This is a fourth schematic diagram of the sealing structure corresponding to the pre-reserved hole in the pipeline in the embodiment;

[0023] Among them, 1 is the infill wall, 2 is the construction reserved hole, 3 is the pipe reserved hole, 4 is the lintel, 5 is the sealing block, 6 is the gap, 7 is the polyurethane foam, and 8 is the pipe. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0025] Example:

[0026] Please see Figure 1 , Figure 3 and Figure 4A sealing structure for a pre-reserved opening in a filling wall includes a filling wall 1 with a pre-reserved opening. The pre-reserved opening contains at least one sealing body formed by stacked sealing blocks 5. There is a gap between the sealing bodies and / or the wall of the pre-reserved opening. Polyurethane foam 7 is filled into the gap 6 formed by the gap. The polyurethane foam 7 and the sealing body seal the pre-reserved opening. In practice, the sealing blocks 5 can be bricks or masonry blocks, etc. In this embodiment, a lintel 4 is provided above the pre-reserved opening on the filling wall 1 to improve the structural stability of the pre-reserved opening. The sealing blocks 5 are made of rubber bricks. The main components of the rubber bricks are... The raw material is waste rubber, and no harmful substances are produced during the production process. It is an environmentally friendly building material. Compared with bricks and blocks, rubber bricks are lighter, which not only facilitates transportation and transfer and makes it easier for construction workers to handle, but also helps to reduce transportation costs, reduce labor intensity, and improve construction efficiency. In addition, it can effectively reduce the load on infill wall 1 and the ground, which helps to improve the stability of the building structure. Furthermore, rubber bricks can withstand the effects of natural environmental factors such as ultraviolet rays, wind, rain, and temperature changes, and are not easy to age, crack, or fade. They are highly applicable and can meet the usage conditions of sealing reserved holes in infill wall 1.

[0027] The sealing structure for pre-reserved holes in infill walls described in this utility model involves stacking sealing blocks 5 to form at least one sealing body within the pre-reserved hole in the infill wall 1. A gap 6 is reserved between the sealing bodies and / or the wall of the pre-reserved hole, and this gap 6 is filled with polyurethane foam 7. The polyurethane foam 7 expands, not only filling the gap 6 but also ensuring tight contact between the sealing blocks 5 and the wall of the pre-reserved hole, thereby sealing the pre-reserved hole. This sealing structure for pre-reserved holes in infill walls does not require pouring, mortar, or water and electricity. It is not only simple in structure and low in labor intensity during construction, but also does not cause secondary pollution to the wall and bottom surfaces. In addition, thanks to the use of rubber bricks as sealing blocks 5 and the filling with polyurethane foam 7, the sealing materials are lightweight, which helps to reduce transportation and construction difficulty and improve construction efficiency. Therefore, the sealing structure for pre-reserved holes in infill walls described in this utility model can effectively solve the current problems of complex and slow progress in sealing holes, and is conducive to reducing the difficulty of sealing pre-reserved holes and improving construction efficiency.

[0028] Specifically, the rubber bricks used in this embodiment comprise 50%-70% rubber, 10%-20% binder, 1%-3% azo foaming agent, 5%-10% flame retardant, 10%-15% filler, 2%-5% phthalate plasticizer, and 1%-2% pigment or stabilizer by weight. The rubber, as the main material, is rubber granules obtained from processed rubber waste such as tires, used to provide elasticity and sound insulation to the rubber bricks. The binder is polyurethane or epoxy resin, used to enhance the structural strength and durability of the rubber bricks. The azo foaming agent forms a microporous structure in the rubber bricks to improve their sound insulation and heat insulation performance. The flame retardant is aluminum hydroxide, used to improve the fire resistance of the rubber bricks and reduce the risk of combustion. The filler is quartz sand or calcium carbonate, used to increase the hardness of the rubber bricks and reduce costs. The phthalate plasticizer improves the processing fluidity of the rubber. The pigment is used to adjust the color of the rubber bricks. The stabilizer improves the UV aging resistance of the rubber bricks.

[0029] The production process of this rubber brick is as follows: Raw material pretreatment: Waste rubber is crushed into rubber particles of 3mm-5mm, cleaned to remove impurities and dried. The filler is sieved to ensure uniform particle size and less than or equal to 0.5mm; Mixing and stirring: The dry materials such as rubber particles, filler, flame retardant and plasticizer are mixed evenly, liquid binder and foaming agent are added, and stirred until completely coated to obtain a mixture; Molding: The mixture is loaded into a mold with a brick size of 200×100×50mm, and pre-formed under pressure of 5MPa-10MPa. Depending on the type of foaming agent, the temperature is controlled at 100℃-150℃ and the time is controlled at 10min-30min to complete foaming and curing; Post-treatment: After demolding, it is left to stand for 24 hours to cool and set naturally; The surface of the rubber brick can be coated with a waterproof or sound-absorbing coating, such as a polyurea coating.

[0030] In addition, the proportion of foaming agent can be increased to form a closed-cell structure in the rubber bricks. Sound-absorbing fibers (such as polyester fibers) or acoustic cotton particles with a weight ratio of 3%-5% can be added to the components to enhance the sound insulation effect of the rubber bricks. Alternatively, phase change materials (such as paraffin microcapsules with a weight ratio of 5%-8%) can be added to the components to adjust the heat capacity of the rubber bricks and improve their thermal insulation performance. Water-based polyurethane binders can be used to reduce VOC emissions. Photocatalytic materials (such as nano-TiO2 with a weight ratio of 1%-2%) can be added to the components to decompose pollutants and improve environmental friendliness. When manufacturing or selecting rubber bricks, the sound insulation performance should be ensured as follows: airborne sound insulation ≥40dB (tested according to GB / T 19889), compressive strength ≥5MPa (tested according to GB / T 5486), fire resistance rating B1 (according to GB 8624), and thermal conductivity ≤0.15 W / (m·K) (according to GB / T 10294).

[0031] For rectangular construction openings 2 without pipes 8 or equipment components running through their inner sides, during implementation, sealing blocks 5 can be stacked laterally inside the opening to form a sealing body. The gap 6 between the sealing body and the opening wall is located laterally. While this method allows the sealing body to fit tightly against the opening wall laterally, it may be difficult to maintain a tight fit vertically, and gaps may even exist, potentially affecting the structural stability of the sealing body in the opening. Figure 1 , Figure 2 and Figure 3 As shown, a sealing block 5 can also be stacked from bottom to top in the reserved hole to form a sealing body, so that the gap 6 between the sealing body and the reserved hole wall is located above the sealing body. This method is not only simple to operate, but also can make the sealing block 5 tightly abut against the sealing block 5 and the reserved hole wall in the vertical direction by using the weight of the sealing block 5 itself. However, similarly, the sealing body is only tightly abutted in the vertical direction. It may be difficult for the sealing body to maintain a tight abutment with the reserved hole wall in the horizontal direction, and there may even be gaps, which can easily affect the structural stability of the sealing body sealing the reserved hole.

[0032] Therefore, please see Figure 1 and Figure 4 In this embodiment, two sealing bodies are formed by stacking sealing blocks 5 from bottom to top in the reserved hole, with the two sealing bodies arranged laterally at intervals and a gap left between the upper side of the sealing body and the wall of the reserved hole. This creates a gap 6 between the two sealing bodies and between the upper side of the sealing body and the wall of the reserved hole. Polyurethane foam 7 is filled into the gap 6. This not only simplifies the operation, but also ensures that the polyurethane foam 7 expands, allowing the sealing blocks 5 to fit tightly against the wall of the reserved hole both vertically and laterally. This helps to ensure the stability of the sealing body in the reserved hole and improves the reliability of the sealing structure of the reserved hole in the filling wall. In addition, for the case where rubber bricks are used for sealing blocks 5, rubber adhesive can be placed between each rubber brick to connect them together, thereby improving the stability and reliability of the sealing structure by enhancing the integrity of the sealing body.

[0033] For pipe openings 3 with pipes 8 or equipment components running through them on the inside, sealing bodies can be installed on one or more sides of the pipe 8, such as... Figure 5 , Figure 6 and Figure 7As shown, when the pipe 8 is at the bottom of the reserved hole, sealing blocks 5 can be stacked from bottom to top to form a sealing body based on the pipe 8. The lower side of the sealing body forms a gap 6 with the wall of the reserved hole, and the pipe 8 is also in this gap 6. After filling with polyurethane foam 7, the expansion of polyurethane foam 7 can make the sealing blocks 5 tightly abut against and move upward as a whole, reducing the pressure on the pipe 8. In addition, thanks to the use of lightweight rubber bricks for sealing blocks 5, the pressure of the sealing body on the pipe 8 is also small before filling with polyurethane foam 7, which will not damage the pipe 8. There is no need to set up additional auxiliary structures to temporarily support and stack the sealing blocks 5, making the construction operation simple and efficient. Figure 8 As shown, when the pipe 8 is located in the middle of the reserved hole, the sealing blocks 5 can be stacked from bottom to top based on the bottom of the reserved hole wall and the pipe 8 to form a sealing body, so that a gap 6 is formed between the two sealing bodies. The pipe 8 is located in the gap 6. After the polyurethane foam 7 is filled, the expansion of the polyurethane foam 7 can make the sealing block 5 above the pipe 8 fit tightly and move upward as a whole, reducing the pressure on the pipe 8, and can make the sealing block 5 below the pipe 8 fit tightly.

[0034] To facilitate a better understanding of the sealing structure for the reserved opening in the infill wall described in this utility model, the corresponding sealing method is introduced as follows:

[0035] 1) Clean up any remaining concrete or mortar protrusions on the reserved hole wall; this facilitates the tight stacking of the sealing block 5 and ensures that the sealing block 5 can be tightly pressed against the reserved hole wall when pushed by the polyurethane foam 7.

[0036] 2) At least one sealing body is formed in the reserved hole by stacking sealing blocks 5, and a gap 6 is formed between the sealing body and the wall of the reserved hole; such as Figure 1 and Figure 2 As shown, when the reserved opening is construction reserved opening 2, sealing blocks 5 are stacked from bottom to top in the reserved opening to form a sealing body, and a gap 6 is formed between the upper side of the sealing body and the wall of the reserved opening. The gap 6 formed between the upper side of the sealing body and the wall of the reserved opening is 30-50mm; Figure 5 and Figure 6 As shown, when the reserved hole is a pipe reserved hole 3, a sealing block 5 is stacked above the pipe 8 in the reserved hole to form a sealing body, and a gap 6 is formed between the lower side of the sealing body and the wall of the reserved hole;

[0037] 3) Fill the gap 6 with polyurethane foam 7. The polyurethane foam 7 expands and fills the gap 6, making the sealing body formed by the stacking of sealing blocks 5 tight, as shown in the figure. Figure 3 and Figure 7As shown; during implementation, in order to avoid excessive expansion of polyurethane foam 7 in the horizontal direction, which would affect the pushing effect on the sealing block 5, a wooden board can be used to cover the reserved hole on the filling wall 1 after filling polyurethane foam 7, so as to limit the expansion direction of polyurethane foam 7. Since polyurethane foam 7 generally begins to expand rapidly a few minutes after release, this operation can be completed by workers holding wooden boards, and it will not have a significant impact on construction efficiency and labor intensity.

[0038] 4) The polyurethane foam 7 and the sealing body seal the reserved hole and clean up the polyurethane foam 7 that has expanded and protruded from the wall surface of the infill wall 1; in this way, the wall surface formed by filling the reserved hole can be kept flat with the infill wall 1, so as to facilitate the subsequent painting and decoration of the infill wall 1.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and not to limit the technical solutions. Those skilled in the art should understand that any modifications or equivalent substitutions to the technical solutions of this utility model that do not depart from the spirit and scope of this technical solution should be covered within the scope of the claims of this utility model.

Claims

1. A sealing structure for pre-reserved holes in an infill wall, characterized in that: The device includes a filling wall with a pre-reserved hole. The pre-reserved hole contains at least one sealing body formed by stacking sealing blocks. There is a gap between the sealing bodies and the wall of the pre-reserved hole. The gap formed by the gap is filled with polyurethane foam. The polyurethane foam and the sealing body seal the pre-reserved hole.

2. The sealing structure for a pre-reserved hole in an infill wall according to claim 1, characterized in that: The reserved opening contains a sealing body, which is formed by stacking sealing blocks from bottom to top. The gap between the sealing body and the wall of the reserved opening is located above the sealing body.

3. The sealing structure for a pre-reserved hole in an infill wall according to claim 2, characterized in that: The distance between the upper side of the sealing body and the reserved hole wall is 30-50mm.

4. The sealing structure for a pre-reserved hole in an infill wall according to claim 1, characterized in that: A pipe is installed in the reserved hole, and the sealing body is located on one or more sides of the pipe.

5. The sealing structure for a pre-reserved hole in an infill wall according to claim 1, characterized in that: The sealing blocks are made of rubber bricks.

6. The sealing structure for a pre-reserved hole in an infill wall according to claim 4, characterized in that: The pipe is located at the bottom of the reserved hole, and there is a sealing body in the reserved hole located above the pipe. The gap between the sealing body and the wall of the reserved hole is located below the sealing body.

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