Application method of tunnel longitudinal construction joint cement-based crystallization type waterproof material

Abstract

The invention discloses an application method of a tunnel longitudinal construction joint cement-based crystallization type waterproof material. The application method comprises the steps that the cement-based crystallization type waterproof material is adopted, the material is blended to be in a cement mortar shape according to the water cement ratio of 0.3:1 and then brushed to the joint of a water-stop belt buried in a tunnel longitudinal construction joint and cement concrete, a gap between a longitudinal water-stop belt and inverted arch concrete is filled up, and the waterproof effect isachieved. According to the adopted application method of the tunnel longitudinal construction joint cement-based crystallization type waterproof material, the permanent and double waterproof performance, the extremely high water-pressure resistant capability, the reinforcing action to a concrete structure and the like of the cement-based crystallization type waterproof material are utilized to blend the water cement ratio again, then the material is brushed to the longitudinal construction joint, coating construction is simple, the waterproof capability and the construction efficiency of a tunnel inverted arch and the secondary lining longitudinal construction joint are greatly improved, and the construction quality is ensured.

Description

technical field [0001] The invention relates to an application method of a waterproof material, in particular to an application method of a cement-based crystalline waterproof material for tunnel longitudinal construction joints, and belongs to the technical field of tunnel engineering. Background technique [0002] The East Tianshan Extra-Long Tunnel is a key project of the PPP construction project of the Balikun-Hami Highway on the G575 line. It is a strategic support point for building the "Silk Road Economic Belt", accelerates the construction of the "Silk Road Economic Belt", and promotes the economic and social modernization of Xinjiang Autonomous Region. It is an important part of the "National Highway Network Planning". It is an important communication channel connecting the G30 Lianhuo Expressway, G7 Jingxin Expressway, G335, and G312. It has become an important north-south direction in eastern Xinjiang. The traffic artery, with a total length of 11.9km, adopts the ...

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Problems solved by technology

[0005] As one of the most commonly used waterstops, rubber waterstops have better water penetration resistance and certain compression elastic sealing performance. At the interface that is in close contact with concrete, the compression rebound sealing force is large and the sealing is relatively reliable; but its It is difficult to install and fix, and it is easy to bend and deform under the vibrating force of concrete pouring, or even fall down, forming voids in concrete pouring, which affects the water-stop effect