A rubber water stopper and underground external wall formwork sealing bolt hole sealing construction method

Abstract

The invention discloses a rubber water stopping plug which is used for plugging a hole remained after an opposite-pull bolt is detached. A construction method comprises the following steps: after detaching an underground concrete outer wall template, eliminating a PVC (Polyvinyl Chloride) pipe with the depth which is not smaller than the length of the rubber water stopping plug by taking an outer wall as a starting point; carrying out mounting type plugging on the hole by utilizing the rubber water stopping plug; and coating an end close to the outer wall with a sealant, and densely plugging the end and a pipeline by adopting expanding type polymer cement waterproof mortar. The common quality problem that the opposite-pull bolt is not plugged tightly is solved and the risk of leaking water along the hole at a later period is eliminated.

Description

technical field [0001] The invention relates to building waterproof technology, in particular to a construction method for sealing and sealing water-stopping holes of pull bolts by formwork of an underground outer wall. Background technique [0002] At present, there are generally two ways to deal with the holes of the pull bolts in the formwork of the underground exterior wall. One is to adopt a reusable pull screw rod with a PVC sleeve. After the formwork is removed in the later stage, the holes are mostly blocked with a foaming agent. This method is often unrealistic in actual engineering, and it often becomes a leaking channel in the later stage. The other is to use a non-detachable tool-type pull bolt, and a square water-stop ring or a rubber water-stop ring is welded in the middle of the screw. The main disadvantage of this method is that the pull bolts cannot be reused, which increases the project cost, and the square water stop ring of the water-stop steel plate ne...

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that the pull bolts cannot be reused, which increases the project cost, and the square water stop ring of the water-stop steel plate needs to be cut and drilled, and then penetrated into the pull bolts, fixed in the middle position, and then fully circled with the screw rod. Welding and other processes, once there are defects such as burn-through and needle-like pores in the weld, water seepage paths will be formed

Once the underground outer wall leaks or seeps, it will not only be difficult to treat in the later stage, but will also have a damaging effect on the concrete structure. In severe cases, it will threaten the safety of the entire building structure. Therefore, it is particularly important to choose an effective, fast, and easy-to-guarantee sealing quality method.

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