Anti-seepage construction method of window sill tongue and groove prefabricated panels

Abstract

The present invention relates to the technical field of housing construction, and in particular to a method for preventing seepage in prefabricated window sill tongue-and-groove panels. The method comprises embedding wooden strips within reinforced concrete shear wall formwork to form a tongue-and-groove on the concrete surface; embedding anti-cracking wire mesh within the prefabricated panels; inserting longitudinal reinforcement for the top beam at the top beam location; constructing a masonry wall with masonry blocks; tying the top beam reinforcement, setting up formwork, and pouring concrete to complete the top beam construction; waterproofing the inner corners of exterior wall components; hanging wire mesh at the junction of different base layers; and finally, performing decorative and finishing work. The present invention imparts the same high anti-seepage properties to existing masonry areas, such as exterior wall windows, as to concrete walls while also reducing construction costs.

Description

Technical Field

[0001] The invention relates to the technical field of house construction, in particular to an anti-seepage construction method for a window sill tongue-and-groove prefabricated plate. Background Art

[0002] In the field of housing construction, especially residential projects, shear wall structures are generally used. To control costs, shale porous brick masonry structures are used as external protective structures at some windows. According to quality problem feedback from multiple residential projects, exterior wall leakage often occurs in the masonry walls. Water seepage in the masonry walls causes dampness in the wall surface. Rainwater enters the space between the structure and the insulation layer through gaps in the exterior wall insulation layer. The mortar joints in the masonry walls are the weakest part of the protective structure, so water in the insulation layer can seep into the interior through the mortar joints.

[0003] Usually, in residential buildings with shear wall structures, a portion of masonry walls is reserved for windows and other locations due to stress and economic considerations. Shale porous bricks are generally used for exterior walls. The price is slightly higher than that of interior cavity fillings, but they have better thermal insulation, waterproofing, and moisture-proof properties. Normally, rainwater is blocked outside the exterior wall by exterior wall finishes and coatings, but if the exterior wall is large, there will be various openings for air conditioning, gas, ventilation, etc., as well as reverse slope water storage at waistlines, window sills, air conditioning panels, etc., which allow rainwater to flow into the insulation layer. Concrete structure walls have good anti-seepage properties and there is no risk of leakage, but masonry walls are the weakest part of the exterior wall. Rainwater can penetrate deep into the interior wall through the mortar joints and repeated freezing and thawing over a long period of time will affect the usability of the wall maintenance structure. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention proposes an anti-seepage construction method for window sill tongue-and-groove prefabricated panels, which aims to solve the problem that traditional masonry walls have poor anti-seepage performance and the risk of leakage.

[0005] The present invention adopts the following technical solutions:

[0006] A method for anti-seepage construction of a window sill tongue-and-groove prefabricated plate is carried out according to the following steps:

[0007] Step 1: Reserve the tongue and groove. When constructing reinforced concrete shear walls, embed wooden strips in the formwork to form a tongue and groove on the concrete surface.

[0008] Step 2: Precast slab production: Use rigid formwork to produce concrete precast slabs. The thickness of the precast slabs should be greater than or equal to 50mm. Anti-cracking steel mesh is embedded inside the precast slabs. The anti-cracking steel mesh is laid to the tongue and groove. The upper part of the anti-cracking steel mesh extends out of the precast slab, and the extended length is sufficient to anchor it into the pressure beam.

[0009] Step 3: Planting reinforcement, planting longitudinal reinforcement of the top beam at the top beam position;

[0010] Step 4: Block filling wall construction, using aerated concrete blocks to build the remaining wall thickness;

[0011] Step 5: Top construction: tie the top beam reinforcement, use the precast slab as the formwork on one side of the top beam, and support the formwork on the other side to pour concrete to complete the top beam construction. Remove the formwork after the top beam concrete reaches the demoulding strength;

[0012] Step 6: Waterproof layer construction: Use waterproof coating to waterproof the inner corners of the exterior wall components, and press polypropylene cloth into the waterproof coating at the gaps between the prefabricated panels and the structure;

[0013] Step 7: Hang the wire mesh at the junction of different base layers;

[0014] Step 8: Decoration and construction, carry out decoration construction work according to design requirements.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention reserves a tongue and groove at the window masonry height during concrete structure construction, and manufactures concrete precast panels according to the window size, with the shape consistent with the reserved tongue and groove, effectively avoiding through-seam leakage at the gap position, and arranges an anti-cracking steel wire mesh in the precast panel, which extends out from the top of the precast panel and is connected with the steel bars in the post-cast pressure beam, thereby enhancing the anti-cracking strength of the precast panel; aerated concrete block filling walls are built within the remaining wall thickness range on the inner side, and since there are concrete precast panels on the outer side, the aerated concrete blocks are avoided from being directly used as exterior walls and failing to meet the anti-seepage requirements, and the cost is also reduced compared to shale porous bricks; a single-sided formwork is adopted on the upper part, and the precast concrete panel on the other side is used as a template for pouring concrete pressure top; finally, a waterproof layer is constructed at the inner corner, and a steel wire mesh is buried at the joints of different base layers, and then decorative construction is carried out, thereby reducing construction costs while improving construction quality.

[0017] Furthermore, the preferred embodiment of the present invention is:

[0018] The distance between the tongue and groove and the outer side of the exterior wall is greater than or equal to 20mm, and the depth and width of the tongue and groove are both greater than or equal to 20mm. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 for Figure 1 AA cross-sectional view;

[0021] In the figure: precast panel 1; anti-cracking steel wire mesh 2; cut-block filling wall 3; top beam 4; steel wire mesh 5; waterproof layer 6; tongue and groove 7; air conditioning panel 8; reinforced concrete shear wall 9. Implementation Method

[0022] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0023] The present invention discloses a method for anti-seepage construction of prefabricated window sill tongue and groove panels. The process mainly includes reserving the tongue and groove, manufacturing the prefabricated panels, planting reinforcement, building the block filling wall, top pressure construction, waterproofing layer construction, hanging steel mesh, and decoration and finishing. The construction is specifically carried out in the following steps:

[0024] Step 1: Reserve a tongue and groove. When constructing the reinforced concrete shear wall 9, embed wooden strips in the template to form a tongue and groove 7 on the concrete surface. The distance between the tongue and groove 7 and the outer side of the outer wall is 20 mm, and the depth and width of the tongue and groove 7 are both 20 mm.

[0025] Step 2: Precast panel 1 is made by using rigid formwork to make concrete precast panels. The thickness of precast panel 1 is greater than 50 mm. Anti-cracking steel wire mesh 2 is embedded in the interior of precast panel 1. Anti-cracking steel wire mesh 2 is laid to the tongue and groove 7. The upper part of anti-cracking steel wire mesh 2 extends out of the top of precast panel 1, and the extended length meets the length required for anchoring into the pressure top beam 4. The outer side of precast panel 1 is made into a smooth surface to facilitate the subsequent construction of the exterior wall, while the inner side of precast panel 1 is made into a rough surface to facilitate connection with aerated concrete blocks and pressure top beam 4.

[0026] Step 3: Planting reinforcement. Plant the longitudinal reinforcement of the top beam at position 4 of the top beam.

[0027] Step 4: Build the block-filled wall 3, using aerated concrete blocks to build the remaining wall thickness. During the construction, the aerated concrete blocks are bonded to the prefabricated panels 1 using mortar.

[0028] Step 5: Top construction, tie the steel bars of the top beam 4, use the prefabricated plate 1 as the template on one side of the top beam 4, and support the template on the other side to pour concrete to complete the construction of the top beam 4. Remove the template after the concrete of the top beam 4 reaches the demoulding strength.

[0029] Step 6: Construction of waterproof layer. Use waterproof coatings such as polyurethane to waterproof the inner corners of the exterior wall components such as the air conditioning panel 8. Press polypropylene cloth into the waterproof coating at the gap between the prefabricated panel 1 and the structure to prevent cracking.

[0030] Step 7: Hang the wire mesh 5 at the intersection of different base layers, such as the intersection of the precast panel and the reinforced concrete shear wall 9 and the intersection of the inner aerated concrete block and the reinforced concrete shear wall 9.

[0031] Step 8: Decoration and renovation construction, carry out decorative construction work such as plastering and insulation according to design requirements.

[0032] The present invention reserves a tongue and groove at the window masonry height during the construction of the concrete structure, and manufactures concrete precast panels according to the window size, the shape of which is consistent with the reserved tongue and groove, thus effectively avoiding leakage through the gaps, and arranging an anti-crack steel wire mesh in the precast panel, which extends out from the top of the precast panel and is connected with the steel bars in the post-cast pressure beam to enhance the anti-crack strength of the precast panel; aerated concrete block filling wall is constructed within the remaining wall thickness range on the inside, and because there is a concrete precast panel on the outside, it is avoided that the aerated concrete block cannot meet the anti-seepage requirements when directly used as the exterior wall, and the cost is also reduced compared with shale porous bricks; the precast panel is prefabricated with a rigid template, the outside is smooth for exterior wall construction, and the inside is rough for easy connection with the block filling wall; the upper part adopts a single-side formwork, and the precast concrete panel on the other side is used as a template for pouring concrete pressure top; finally, a waterproof layer is constructed at the inner corner, and a steel wire mesh is buried at the joints of different base layers, and then decorative construction is carried out, which reduces construction cost and improves construction quality.

[0033] The above is only a specific implementation method of the present invention, but the protection of the present invention is not limited to this. All equivalent changes or replacements of the technical features of the technical solution that can be thought of by technicians in this technical field are included in the protection scope of the present invention.

Claims

1. A method for anti-seepage construction of window sill tongue-and-groove prefabricated panels, characterized in that: Follow these steps: Step 1: Reserve the tongue and groove. When constructing reinforced concrete shear walls, embed wooden strips in the formwork to form a tongue and groove on the concrete surface. Step 2: Precast slab production: Use rigid formwork to produce concrete precast slabs. The thickness of the precast slabs should be greater than or equal to 50mm. Anti-cracking steel mesh is embedded inside the precast slabs. The anti-cracking steel mesh is laid to the tongue and groove. The upper part of the anti-cracking steel mesh extends out of the precast slab, and the extended length is sufficient to anchor it into the pressure beam. Step 3: Planting reinforcement, planting longitudinal reinforcement of the top beam at the top beam position; Step 4: Block filling wall construction, using aerated concrete blocks to build the remaining wall thickness; Step 5: Top construction: tie the top beam reinforcement, use the precast slab as the formwork on one side of the top beam, and support the formwork on the other side to pour concrete to complete the top beam construction. Remove the formwork after the top beam concrete reaches the demoulding strength; Step 6: Waterproof layer construction: Use waterproof coating to waterproof the inner corners of the exterior wall components, and press polypropylene cloth into the waterproof coating at the gaps between the prefabricated panels and the structure; Step 7: Hang the wire mesh at the junction of different base layers; Step 8: Decoration and construction, carry out decoration construction work according to design requirements.

2. The anti-seepage construction method of window sill tongue-and-groove prefabricated panels according to claim 1, characterized in that: The distance between the tongue and groove and the outer side of the exterior wall is greater than or equal to 20mm, and the depth and width of the tongue and groove are both greater than or equal to 20mm.

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