A repair method for water leakage from joints and other parts of underground structures that demonstrates a water-stopping effect over a long period, eliminating the need for repeated repair work!
The "KS Method" is a repair technique designed to stop water leakage from joints and cracks in concrete structures such as underground joint trenches, tunnels, box culverts, and manholes. It is a resin-based sheet-type waterproofing method that excels in long-term durability. 【Features】 ■ With a double structure of waterproof sheets and protective nets, it demonstrates resistance to groundwater pressure and can adapt to external water pressure of 0.1 MPa or less (equivalent to a water depth of 10 m). ■ It follows horizontal displacements (up to 20 mm) caused by earthquakes, preventing re-leakage from the repaired area. ■ It does not require special construction tools, minimizing the need for cable relocation even in tunnels with congested cables, thus demonstrating high workability. *For more details, please download the PDF or feel free to contact us.
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【Construction Procedure】 01. Preparation Work ・Relocation of cables and other items, protective measures ・Removal of joint materials at water stop locations, floating parts of walls, etc. 02. Substrate Treatment and Shaping ・Grinding substrate treatment ・Substrate cleaning, etc. 03. KS Method ・Installation of water stop dam ・Substrate cleaning and drying, etc. 04. Cleanup ・Return of cables and other items, removal of protective measures *For more details, please download the PDF or feel free to contact us.
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Our company was established in 1999 with the purpose of centrally managing the operations related to the underground infrastructure facilities owned by NTT, as well as promoting contributions to society through the enhancement and advancement of social infrastructure in the general market. We aim to protect the NTT Group's "communication services" and fulfill our role in contributing to local communities through the creation of "safe, secure, and comfortable" urban environments.