Repairing mortar for bridge pavement repairing paving, and preparation method and construction method thereof

Abstract

The invention provides a repairing mortar for bridge pavement repairing paving, and a preparation method and a construction method thereof. The repairing mortar for bridge pavement repairing paving is prepared through adding ingredients to bisphenol A epoxy resin, a curing agent, an active diluent and aggregates and mixing above materials, the repairing method has a fast setting speed, the early compression strength, the early bending strength and the early bonding bending strength of the repairing mortar can met fitted traffic opening strength indexes, the later strength of the repairing mortar is high, and the repairing mortar also has good ductility, and can well meet local rapid repairing technology requirements of a cement concrete bridge pavement paving layer; the preparation method of the repairing mortar for bridge pavement repairing paving has the advantages of simple operation flow, easy onsite construction operation, and suitableness for local rapid repairing of the bridge paving layer pavement; and the pavement repairing laying construction method of the repairing mortar combines the advantages of high compression strength, high bending strength and high bonding bending strength, and realizes good repairing quality and long service life of the repaired paving position.

Description

technical field [0001] The invention relates to the technical field of bridge pavement repair materials, in particular to a repair mortar used for bridge pavement repair and pavement, a preparation method and a construction method. Background technique [0002] Because bridges are mostly traffic nodes, the damage of bridge pavement is limited by traffic and environmental factors, and the disease often cannot be repaired and rectified in time, which seriously affects the safe driving of vehicles and the service life of bridges. At present, the repair work of cement concrete bridge pavement mainly has the following three treatment methods: 1. The overall asphalt overlay of the bridge pavement; No matter it is overall renovation or local excavation and repair, the common problem is that the traffic is closed for a long time. Usually, the traffic needs to be closed for more than 7 days after the repair construction. This will bring huge pressure to the traffic of urban roads and...

AI Technical Summary

Problems solved by technology

However, it has been proved by practice that generally the cement concrete road (bridge) surface repaired by special cement will have the phenomenon of late strength shrinkage, as well as problems such as wear resistance and unsatisfactory bonding performance of new and old concrete; the construction of fiber concrete repair materials is more complicated and requires The mechanical strength properties such as compressive strength and flexural strength can reach the road use index with a longer curing time, so it takes a long time to close the traffic, which cannot meet the requirements of a shorter closed traffic time for cement concrete bridge pavement construction; The hydration reaction of concrete with admixtures and admixtures is likely to be uneven due to uneven distribution of admixtures or excessive additions, resulting in uneven hydration reactions and unsatisfactory final repair effects; polymer concrete must be reasonably controlled to add Developed high-quality and practical rapid repair materials, the material configuration is difficult, and it is difficult to be suitable for construction on the road repair site

In fact, there are many deficiencies in various repair materials used in actual projects, and their effects are not ideal. At present, the pavement of cement concrete bridges in my country is still very serious.

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