A method for repairing water seepage cracks in concrete wall and floor

Abstract

The invention discloses a concrete wall and bottom plate water seepage crack repair method. The method comprises the following steps that wall and bottom plate cracks are found out and marked; the crack of which the width is larger than 0.3 mm is subjected to digging into a V-shaped groove; dust, dirt and loose parts of the surface of concrete in the V-shaped groove area are removed and washed with water; layered dense blocking and maintenance are conducted on the V-shaped groove through a waterproof leaking stoppage part, and meanwhile, a grouting nozzle is implanted; grouting holes are obliquely drilled in the two sides of the crack, and a grouting nozzle is installed; and after final set of the waterproof leaking stoppage part, the grouting holes are circularly subjected to pressure grouting; and after grout is completed solidified, the grouting nozzles are disassembled. According to the method, by obliquely drilling the grouting holes in the two sides of the crack and installing the grouting nozzle, a plurality of channels communicating with the interior of the crack are formed, the water pressure of the interior of the crack can be reduced, grout can be injected into the crackconveniently in the later period, through permeation of the grout, the water seepage crack is sealed after the grout is solidified, and accordingly, the water seepage crack leaking stoppage effect isachieved so that underground construction water seepage accidents can be avoided.

Description

technical field [0001] The invention relates to the field of concrete construction, in particular to a method for repairing water seepage cracks in concrete walls and bottom plates. Background technique [0002] In order to develop and utilize underground space resources, people have built underground projects such as underground houses, underground railways, highway tunnels, underwater tunnels, underground common trenches and underpasses for crossing streets. In underground engineering construction, concrete walls and floors are often poured in order to isolate the underground space from the original strata. When cracks appear in the concrete wall and floor during later use, because the outside of the concrete wall and floor is stratum soil, which has a relatively rich groundwater, the groundwater will seep into the underground project through the cracks, causing underground engineering water leakage accidents . For this reason, when the quality defects of water seepage c...

AI Technical Summary

Problems solved by technology

When cracks appear in the concrete wall and floor during later use, because the outside of the concrete wall and floor is stratum soil, which has a relatively rich groundwater, the groundwater will seep into the underground project through the cracks, causing underground engineering water leakage accidents

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