Settlement joint cement-based flexible waterstop and construction process thereof

Abstract

The invention relates to a settlement joint cement-based flexible waterstop and construction process thereof. A cross section of the waterstop is in an omega shape, the waterstop comprises a flexible water-proof layer and a reinforcing layer, wherein the flexible water-proof layer is integrally adhered with the reinforcing layer, the flexible water-proof layer is a polymer cement-based water-proof coating layer, and a multi-layer structure is formed by sequentially laminating, pressing and brushing non-fabric woven layers. The construction process comprises the steps of coating and brushing the water-proof layer in the middles of non-woven fabrics to obtain a prefabricated waterstop, arranging the prefabricated waterstop on a settlement joint, inwards folding the prefabricated waterstop into the omega shape, pressing and brushing the non-woven fabrics on two sides on a main body on two sides through water-proof coating, after the water-proof coating is dried, repeating the construction method to obtain the flexible water-proof layer, and adhering the stainless steel wire net reinforcing layer outside the flexible water-proof layer in a thick mode. The settlement joint cement-based flexible waterstop and the construction process of the settlement joint cement-based flexible waterstop solve the problem of leakage of underground facilities caused by the fact that after a settlement joint flexible waterstop is competed, damage is caused in a short term, achieves customization and a breaking strength which is more than one time of the national standard, and have the advantages of being resistant to deformation and corrosion, capable of preventing chloridion invasion and the like.

Description

[technical field] [0001] The invention relates to the technical field of settlement joint waterstops, in particular to a settlement joint cement-based flexible waterstop and its construction technology. [Background technique] [0002] At present, for the reconstruction and repair of deformation joints of underground facilities, the settlement joint waterstops of domestic and foreign underground facilities have been stuck on an old standard, and the original standards (national and international standards) can no longer meet the existing geological deformation. parameters. Therefore, the settlement joint waterstop will be damaged in a short period of time after completion, causing leakage of underground facilities, which is also an unsolvable problem in construction and use. Effective service life of underground facilities. [0003] In addition, conventional rubber waterstops have been used in the design and construction of underground engineering settlement joints, and the...

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Problems solved by technology

[0004] According to the current situation of the waterstop, it has the following disadvantages: it is mainly composed of organic materials, which is toxic, smelly, and hot in construction; it is easy to react with ultraviolet rays and is easy to age; it cannot be used for post-back water surface construction and repair. ; Breaking elongation ≤ 240%; low temperature temperature: -40 ℃ to start cracking; tear strength (B grade) ≥ 30KN / M; deformation size is ± 2mm

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