A method for controlling water seepage from concrete floor and wall cracks

Abstract

The invention discloses a method for controlling water seepage from cracks in concrete floor and wall, which starts from one side of the structural surface of the concrete floor and wall to search for leaks one by one, and marks them with red spray paint; The red mark is to be drilled at an angle of 45° to the base surface at 3~4cm next to the leak point. The drilling depth is between 1 / 2 of the structure thickness and 2 / 3 of the structure thickness. Install grouting at the place where the hole is drilled Nozzle; use an electric grouting machine for grouting, when the grouting volume of each hole section is less than 5L / min, and the water absorption per meter of the inspection hole is less than 1.0L / min, the grouting is over, and then the next construction will be carried out; seal Hole out: After the grouting is finished, chisel off the grouting nozzle, and then seal it tightly with leak-stopping materials. During grouting, because one end of the grouting hole is blocked, the grouting pressure increases, and the cracks and seepage holes are quickly filled, thereby improving the anti-seepage effect; the amount of grouting fluid and cement is greatly reduced, economical and practical, and the construction period is shortened, and there will be no leakage. Large cracks and damage.

Description

technical field [0001] The invention relates to a method for controlling water seepage from cracks in concrete bottom plates and walls. Background technique [0002] Generally, holes are drilled vertically along the water seepage holes or cracks, penetrate the base plate or wall plate, and then press the grouting nozzle. In the holes and cracks, according to this to stop leakage and prevent water seepage. However, this method has two serious shortcomings: first, due to the penetration of the penetration hole, it is impossible to fill the seepage hole and crack with grout, and the anti-seepage effect is not ideal; second, the grouting pressure of the penetration hole is small, Controlling the amount of grouting only by controlling the grouting pressure often leads to not too much grouting (insufficient grouting), and it is easy to cause excessive grouting to accumulate on the upstream surface, breaking the waterproof layer on the upstream surface, or The foundation slab is ...

AI Technical Summary

Problems solved by technology

However, this method has two serious shortcomings: first, due to the penetration of the penetration hole, it is impossible to fill the seepage hole and crack with grout, and the anti-seepage effect is not ideal; second, the grouting pressure of the penetration hole is small, Controlling the amount of grouting only by controlling the grouting pressure often leads to not too much grouting (insufficient grouting), and it is easy to cause excessive grouting to accumulate on the upstream surface, breaking the waterproof layer on the upstream surface, or The foundation slab is lifted (deformation of the wall), causing it to crack, resulting in larger cracks and damage

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