Water-seal structure with expansion joint and spraying and filling construction method for forming same

An expansion joint and water-stop technology, which is applied in water conservancy projects, sea area engineering, construction, etc., can solve the problems that materials do not meet the engineering durability and deformation, the durability of expansion joints is difficult to guarantee, and the simple operability is not satisfied. Achieve superior water-stop performance, improve water-stop effect, and good stretching and elasticity

Active Publication Date: 2014-04-02
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited deformation of the moss-based fabric, not only the construction is relatively complicated, but also the durability of the expansion joints is difficult to guarantee due to the repeated expansion and contraction of the concrete temperature every day.
[0006] To sum up, the construction scheme of using rubber belt waterstop, the surface waterstop scheme of caulking with asphalt ointment or polyethylene cement, and the surface sealing scheme of mesh-like moss-based cloth polyurethane do not meet the requirements of simple operability , and the materials used do not meet the requirements of engineering durability and deformability

Method used

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  • Water-seal structure with expansion joint and spraying and filling construction method for forming same
  • Water-seal structure with expansion joint and spraying and filling construction method for forming same

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Embodiment Construction

[0016] Such as figure 1 As shown in the water-stop structure of this expansion joint, a primer layer 3 is provided on the side wall and upper edge of the expansion joint 5, an elastic waterproof filler 4 is filled in the expansion joint, and polyurea elastic is sprayed on the upper edge of the expansion joint. Body waterproof coating1. Expansion joints may be formed from concrete 7 .

[0017] Preferably, the elastic waterproof filling body is arranged at the upper part of the expansion joint in the water-facing direction. Because the elastic waterproof filling body is only arranged on the upper part of the water-facing direction, and does not need to be arranged at other positions, the material used for the elastic waterproof filling body is very small, thereby reducing the cost well.

[0018] Preferably, the bottom 2 of the elastic waterproof filling body is in an upward concave shape. This not only changes the stress-bearing structure, but also saves more materials than t...

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Abstract

The invention discloses a water-seal structure with an expansion joint. The side wall and upper edge of the expansion joint are provided with primer layers; an elastic waterproof filling body is filled in the expansion joint, the upper edge of the expansion joint is provided with a polyurea elastomer waterproof coating. The water-seal structure is good in water-seal property and durability and strong in impact and abrasion resistance, has capability of adapting to three-dimensional deformation of the expansion joint, and is simple in construction. The invention further provides a spraying and filling construction method for forming the water-seal structure.

Description

technical field [0001] The invention belongs to the technical fields of civil engineering and water conservancy engineering, and in particular relates to a water-stop structure for expansion joints and a spraying method for forming the water-stop structure. Background technique [0002] The water sealing of expansion joints of hydraulic structures (such as: water sealing of tunnel lining joints, rockfill dam face water sealing, aqueduct expansion joint water sealing, etc.) is a very important and difficult problem to solve. Especially the expansion joints of important buildings such as pumping stations, water aqueducts, tunnels, and culverts, once leaking will cause serious consequences. While satisfying the durability, the expansion joint filling material should have the elastic characteristics to adapt to three-dimensional deformation, and at the same time, it is required to have good adhesion with the two side walls of the joint, that is, the deformation and failure of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B3/16
Inventor 李炳奇张国新姜云辉周月霞
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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