Rapid repair method and system for expansion joints based on elastic concrete

Abstract

The invention discloses a method and a system for fast repairing an expansion joint based on elastic concrete. The system is used for an expansion joint notch, and comprises polyurethane elastic concrete, an expansion joint elastic sealant, a bottom sizing agent and a bottom sealing foam stick. The polyurethane elastic concrete is a bi-component polyurethane fast-curing concrete fast-repairing product which is blent with aggregates for increasing structural strength; the polyurethane elastic concrete fills the broken position of the expansion joint notch; the durability and expansion amount of the used expansion joint elastic sealant can meet the expansion amount deformation requirements of substituting expansion joints below D80. According to the method and the system for fast repairing the expansion joint based on the elastic concrete, the main technical problem that traffic is opened when the concrete at two sides of the expansion joint is maintained insufficiently in the prior art due to the fact that the time of pouring and curing the concrete is too long is solved.

Description

technical field [0001] The invention relates to the repair technology of elastic concrete applied to expansion joints of roads and bridges, in particular to a method and system for quickly repairing expansion joints based on elastic concrete. Background technique [0002] Elastic expansion joints are a kind of asphalt-filled bridge expansion joints. At present, in the technical field of road and bridge expansion joint notch damage repair technology, since the expansion joint device itself is a prefabricated part, the repair process of road and bridge expansion joints needs to be repaired. Construction, followed by pouring of concrete and expansion joint devices, followed by concrete curing. At present, in the process of replacing expansion joints of highways and urban bridges, the two main links that take a long time are the construction of reserved slots and the pouring of concrete in expansion joints Concrete placement and curing, especially due to the long time it takes f...

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Problems solved by technology

[0003] The object of the present invention is to provide a quick repair method and system for expansion joints based on elastic concrete. The repair method and system have fast construction speed, and the elastic concrete used is solidified quickly and has strong durability, so as to solve the problem of expansion joints in the prior art. Insufficient concrete maintenance on both sides means that it is open to traffic, and the time required for post-concrete pouring and maintenance is too long, which restricts the technical problems of traditional expansion joint repair and replacement

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