Waterproof construction method for preventing leakage of deformation joint

Abstract

The invention discloses a waterproof construction method for preventing leakage of a deformation joint. The waterproof construction method comprises the steps that an arc-shaped supporting strip is arranged in the deformation joint along a central buried waterstop belt, and a cavity is formed between the inner wall of the arc-shaped supporting strip and the central buried waterstop belt; a first layer of leaking-stoppage materials are arranged on the outer wall of the arc-shaped supporting strip along the deformation joint; grouting water-stopping materials are injected into the cavity; jointfilling materials and a second layer of leaking-stoppage materials are sequentially arranged on the outer wall of the first layer of leaking-stoppage materials along the deformation joint; and an external waterstop belt is arranged on the second layer of leaking-stoppage materials along the deformation joint. The arc-shaped supporting strip is arranged in the deformation joint along the central buried waterstop belt and fixed in the deformation joint by the first layer of leaking-stoppage materials, then the grouting water-stopping materials are injected into the cavity, the grouting water-stopping materials injected into the deformation joint are made compact and uniform by the arc-shaped supporting strip, and thus, the anti-leakage effect of the grouting water-stopping materials is improved; and a waterproof structural layer is additionally arranged, so that the anti-leakage effect of the deformation joint is further improved, and the waterproof effect after repair is improved through rigid-flexile combination.

Description

technical field [0001] The invention relates to the technical field of building leakage control, and more particularly relates to a waterproof construction method for deformation joint leakage. Background technique [0002] "Technical Regulations on Leakage Control of Underground Engineering" (JGJ / T212-2010) stipulates the main methods of leakage control of cast-in-place concrete structures. The rigid waterproof layer should meet the following requirements: [0003] 1. For the construction joints with intact pre-embedded grouting system, it is advisable to use the pre-embedded grouting system to inject ultra-fine cement or water-soluble grouting materials to stop water; The measures for fast sealing and water-stopping of materials should comply with the provisions of Article 4.2.1 of this regulation; 3. The leakage of the construction joints of the reverse-built structure wall should be water-stopping and reinforced by drilling and grouting. The grouting water-stop materia...

AI Technical Summary

Problems solved by technology

[0019] The purpose of the present invention is to provide an improved deformation joint leakage construction method for the existing construction method in which the waterproof joint filling material and the grouting material are in the same maintenance layer, which is prone to have gaps and cause material unevenness, so as to improve the maintenance efficiency after maintenance. waterproof effect

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