Concrete gap repairing and anti-seepage treatment method

Abstract

The invention relates to a concrete gap repairing and anti-seepage treatment method. The method comprises the following steps of (1) forming a groove in a concrete structure by taking a gap of the concrete structure as a center; (2) embedding a grouting nozzle in the groove, and keeping a gap between the grouting nozzle and the gap of the concrete structure; (3) fixing the grouting nozzle in the groove by adopting a plugging material, and plugging and compacting the rest part of the groove; (4) then, grouting through a grouting nozzle till the interior of the gap reaches a saturated grouting state; (5) dismounting the grouting nozzle, and the completely plugging and filling the groove with a plugging material; and (6) coating the cured and blocked groove and the periphery of the cured and blocked groove with a waterproof layer, and then completing treatment. According to the method, true and false leakage cracks can be distinguished in advance, so that the grouting workload is reduced, the grouting efficiency and accuracy are improved, the grout leakage phenomenon in a traditional grouting process can be effectively solved, and meanwhile, concrete is prevented from secondary damage caused by drilling.

Description

technical field [0001] The invention belongs to the technical field of building waterproofing, and relates to a concrete gap repair and anti-leakage treatment method. Background technique [0002] In recent years, my country's urbanization process has been accelerating, and the scale of buildings has continued to increase. There are more and more underground concrete structure projects such as underground parking lots, shopping malls, and civil air defense projects. However, in the process of concrete structure construction, due to materials, design, and construction Various factors such as poor maintenance and insufficient maintenance lead to various cracks in the concrete structure. At the same time, the concrete cannot be poured continuously due to factors such as unstable concrete mixture, insufficient vibration, sudden failure of pouring equipment, and engineering construction needs. Interruption occurs. When the interruption time exceeds the initial setting time of concr...

AI Technical Summary

Problems solved by technology

Most of the gaps inside the concrete are tortuous. If you always drill and grout on one side of the gap, once the direction of the gap inside the concrete is biased to the other side, you will not be able to get the grouting and water sealing at all. Therefore, grouting by means of cross-drilling can ensure that at least one side of the drilling grouting on both sides of the gap can achieve the grouting and water-stopping effect, so this cross-drilling grouting is actually a kind of "probabilistic" Grouting", that is: only part of the drilled grouting that has been constructed has played a role, and many others are ineffective, which causes a huge waste of grouting materials and grouting nozzles

[0006] (3) The effect of drilling and grouting has a lot to do with the location of the drilling. The direction and distribution of the internal gaps in the concrete are unknown to the construction personnel. To a large extent, drilling depends on experience. If the position is not good, it is necessary to re-drill and grout, which will not only increase the damage to the concrete structure, but also cause waste of grout and grout nozzles

[0007] (4) Since the location of the gap in the concrete structure cannot be seen, it is difficult to grasp the depth of the drilling and the depth of the buried grouting nozzle, or the drilling depth is not enough to pass through the gap, and the slurry cannot be poured into the gap ; or the grouting nozzle is buried too deep, and the discharge port has passed through the gap. After the grouting nozzle is tightened, the expansion rubber will disconnect the discharge port from the gap, and the grouting material cannot enter the gap, and the drilling cannot be guaranteed. The effect of grouting

[0008] (5) The treatment method of single drilling grouting or first drilling and grouting and then sealing the gaps, most of the grouting materials will flow out from the concrete surface along the gaps, and less slurry flows to the internal gaps of the concrete, which is difficult Guarantee the water-stop effect of grouting; at the same time, for high water pressure leakage, this operation mode is even more inapplicable, and the grouting material used will be washed away by high-pressure water, which not only brings difficulties to construction, but also causes waste of materials

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