Pulverizing treatment method for high-speed railway base plate

Abstract

The invention relates to the technical field of railway engineering, in particular to a high-speed railway base plate pulverization treatment method which comprises general pulverization surface treatment and severe pulverization surface treatment, a base plate or a base layer of a supporting layer needs to be cleaned firstly during treatment, and different cleaning modes are adopted according todifferent pulverization degrees; then MPC neat paste and MPC concrete are blended for a common pulverized surface and a severely pulverized surface respectively, the MPC neat paste and the MPC concrete are sprayed to the surface of the treated base layer respectively, small pits and cracks in the surface of the base layer are filled, the maintenance purpose is achieved, and the MPC repairing material has the characteristics of rapid hardening, high early strength, high bonding performance and the like, and is high in curing speed and repairing efficiency; repairing can be completed within a short skylight time, the traffic requirement is met, the compactness is high in the using process, the sealing performance is good, and the method has a good effect of preventing continuous degradationof reinforced concrete caused by external erosion.

Description

technical field [0001] The invention relates to the technical field of railway engineering, in particular to a method for treating pulverization of a high-speed railway base plate. Background technique [0002] After the current high-speed railway has been put into use, it has been found through various investigations that the concrete damage of the railway base plate and supporting layer is mainly caused by concrete pulverization and spalling. In some sections, the concrete powdering of the base plate and supporting layer is serious, and surface concrete spalling and internal reinforcement appear. The exposed situation has seriously affected the durability of the concrete structure of the ballastless track. At present, according to the degree of pulverization of the base plate / support layer concrete, it is divided into severe pulverization and general pulverization. In the case of area drop, defect, exposed rock or even exposed ribs, etc., generally pulverization refers to ...

AI Technical Summary

Problems solved by technology

[0002] After the current high-speed railway has been put into use, it has been found through various investigations that the concrete damage of the railway base plate and supporting layer is mainly caused by concrete pulverization and spalling. In some sections, the concrete powdering of the base plate and supporting layer is serious, and surface concrete spalling and internal reinforcement appear. The exposed situation has seriously affected the durability of the concrete structure of the ballastless track. At present, according to the degree of pulverization of the base plate / support layer concrete, it is divided into severe pulverization and general pulverization. In the case of area drop, defect, exposed rock or even exposed ribs, etc., generally pulverization refers to the occurrence of partial cracking, peeling off of the surface layer of the base plate / supporting layer concrete without exposed ribs, exposed sand, etc. Therefore, in view of the above problems, a high-speed railway Base plate pulverization remediation method