Repairing and fixing structure for cracks of roads and bridges

Abstract

The invention discloses a repairing and fixing structure for cracks of roads and bridges and particularly relates to the field of road and bridge construction. The structure comprises a bridge body and a grouting part, a crack body is arranged in the bridge body, a first caulking groove is formed in the position, close to the crack body, of the bridge body, a second caulking groove is formed in the top of the first caulking groove, and a grouting sealing layer is arranged between the first caulking groove and the crack body. According to the invention, the grouting sealing layer is manufactured through the grouting part; grouting liquid of an epoxy resin material is injected into the material storage cavity of the grouting part; then the slurry is guided to the crack body and the groutingsealing layer formed on the inner wall of the first caulking groove through the slurry separation holes; according to low heat release, small contractibility and excellent adhesion to concrete after hardening of the epoxy resin material, the formed grouting sealing layer has good bonding performance with old concrete, re-crack expansion of the crack body due to hardening is avoided, and the problem of water seepage or reverse osmosis at the crack can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of road and bridge construction, and more specifically, the invention relates to a repairing and fixing structure for road bridge cracks. Background technique [0002] Road bridges are generally composed of several parts such as roadbed, road surface, bridge, tunnel engineering and traffic engineering facilities. Among them, roadbed engineering: roadbed is a linear structure built with soil or stone. It bears its own weight of rock and soil and the gravity of the road surface, as well as the driving load transmitted by the road surface, and is an important part of the entire road structure. Highway subgrade mainly includes several parts such as subgrade body, side slope, side ditch and other auxiliary facilities; pavement is a layered structure paved with various road construction materials or mixtures layered on the highway subgrade for vehicles to drive. Its function is to ensure that the car can run on ...

AI Technical Summary

Problems solved by technology

[0003] The road surface is the most vulnerable to damage in road bridges. Due to various reasons, cracks are easily generated, and the generation of cracks not only reduces the service life of road bridges, but also affects the roadbed due to the infiltration of rainwater. The existing road surface repair technology is through simple Filling concrete to complete the repair of cracks, this method has a short duration of action and cannot fundamentally avoid the expansion of cracks, and the waterproof effect is poor, the repair efficiency is low, and the asphalt concrete at the cracks is prone to peeling off, resulting in secondary formation crack

In addition, for the problem of water seepage or reverse seepage at the repaired cracks, plugging king or ordinary Portland cement plus waterproof admixture is basically used for repairing, but because of its large shrinkage and expansion coefficient, it may cause cracks. Fissures proliferate, resulting in less effective sealing and less effective restorations

Images