Special cement-based repair material and quick repair method for cement concrete pavement

Abstract

The invention discloses a special cement-based repair material, and a corresponding quick repair method for cement concrete pavement is established accordingly. The repair material is made of the following components in specific weight parts: magnesium phosphate cement, sulphoaluminate cement, early strength agent, water reducer, redispersible latex powder, fly ash, corundum, fine sand, crushed stone , carbon fiber, water-soluble polyurethane. The mechanical properties, wear resistance, waterproof and impermeability and durability of the special cement-based repair material of the present invention all meet the application requirements, the required construction equipment is simple, the construction process is simple, and the construction is less affected by climate conditions. It can be constructed under normal temperature and rainy and snowy weather, the maintenance time is short, it can be quickly opened to traffic, has little impact on traffic, has good social and economic benefits, and has broad engineering application prospects.

Description

technical field [0001] The invention belongs to the technical field of maintenance and repair of cement concrete pavement, and in particular relates to a special cement-based repair material and a quick repair method for cement concrete pavement. Background technique [0002] Cement concrete pavement is an important pavement structure form, which is widely used in the road network of our country. However, due to the impact of channelized traffic, vehicle overloading, climatic factors, etc., the cement concrete pavement often has cracks, broken boards, voids and other road surface diseases before reaching the expected service life. Functionality is adversely affected. When repairing cement concrete pavement diseases, commonly used repair materials include inorganic and organic materials, among which organic materials mainly include epoxy resin and asphalt materials, but organic materials generally have poor adhesion to the original pavement and low strength , Single perform...

AI Technical Summary

Problems solved by technology

However, due to the influence of channelized traffic, vehicle overloading, climatic factors, etc., the cement concrete pavement often has road surface diseases such as cracks, broken plates, and voids before reaching the expected service life. Functionality is adversely affected

When repairing cement concrete pavement diseases, commonly used repair materials include inorganic and organic materials, among which organic materials mainly include epoxy resin and asphalt materials, but organic materials generally have poor adhesion to the original pavement and low strength , single performance and other issues

In addition, compared with inorganic materials, organic materials are more expensive and more likely to cause environmental pollution

At present, inorganic repair materials are generally prepared with cement of different components as the base material. Such materials have disadvantages such as slow strength development, long time of closed traffic, poor bonding performance, poor durability, and the need for secondary repairs.