Do the tension bolts have a water-stopping effect?
Answer: Due to the different purposes and usage methods of the pull bolts, they do not have a water-stopping effect. Use casings to control the size of the formwork, and then the pull bolts control the internal dimensions of the formwork and reduce the deformation of the outer shape.
For water-stopping purposes, it is used in basement wall panels. Generally, water-stopping sheets are welded in the middle of pull bolts for water-stopping purposes and are directly buried in the concrete. Nowadays, some people are using casings to pull bolts (reused), and they use the short ends of steel bars as wedges in this hole, which is also quite effective. Enthusiastic netizens talked about: using threaded screws. A young man who has been to Japan. He applied for a patent for threaded screw accessories and pull bolts. He left me a set of samples (which I think are very good, but cannot be promoted currently from a price point of view). He did not talk to me in detail about how screw threads can also increase water content. The role of the penetration path, but I think the opinions of enthusiastic netizens are reasonable, but only through comprehensive and comparative experiments of multiple projects can we say its effectiveness and advantages and disadvantages.