Seepage-preventing blocking structure and method for screw hole of concrete shear wall

A technology of concrete shear wall and screw hole, which is applied in the direction of building construction, building maintenance, construction, etc., to achieve the effect of easy operation, fast construction speed and simple structure
CN110863667APending Publication Date: 2020-03-06SHANGHAI NO 7 CONSTR
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
SHANGHAI NO 7 CONSTR
Publication Date
2020-03-06

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Abstract

The invention discloses a seepage-preventing blocking structure and method for a screw hole of a concrete shear wall, and belongs to the technical field of seepage prevention of concrete shear walls.The seepage-preventing blocking structure comprises a polyurethane foaming agent arranged in the screw hole, asbestos cement arranged in an expansion hole, a waterproof material which is applied to the outer side of a wall body of the concrete shear wall through brushing and covers the asbestos cement as well as dry and hard cement mortar arranged in the screw hole in the inner side of the wall body of the concrete shear wall in a filling manner. According to the seepage-preventing blocking structure and method, the expansion hole is formed, the asbestos cement is arranged in the expansion hole for blockage, the polyurethane foaming agent is injected into the screw hole, the outer side of the shear wall is brushed with the waterproof material, and a compact structure is formed at the screwhole of a pull screw, so that the purposes of completely eradicating seepage of the screw hole and improving the project quality are achieved.
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Description

technical field

[0001] The invention relates to an anti-seepage sealing structure and method for a screw hole in a concrete shear wall, and belongs to the technical field of anti-seepage of a concrete shear wall. Background technique

[0002] During the construction of concrete shear walls, for parts with high waterproof requirements (especially in the construction of underground structures), the shear wall formwork often uses three-stage water-stop tensioning screws to fix the formwork on both sides of the wall to ensure that the bolts Water repellent effect on the sides. Such as figure 1 As shown, a waterproof steel plate 11 is arranged on the pull screw 10 in the shear wall, and threaded sleeves 12 are arranged at both ends of the pull screw. However, it is easy to loosen the anti-tension screw during construction, so that a gap is formed between the anti-tension screw and the concrete of the shear wall. Body screw hole. Under the influence of various unfavorable cond...

Claims

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