(1) During construction, the mixing is uneven, especially the mixing of fly ash and lime is not good. You can't see it when there is water in the construction, and fly ash can fly loosely when it is dry.

(2) Due to lack of water or poor health in construction, the lime-fly ash did not fully react.

(3) Floating ash scattered on the surface during construction.

(4) The quality of lime or fly ash is not high or gravel contains soil. Harm is a, the connection between the base and the surface layer is preferably the connection between the gravel surface layer and the surface layer, and the lime-fly ash plays an isolation role in this process. B. When vertical and horizontal cracks appear on the pavement, rain, snow and water may penetrate into the pavement, and float ash will be discharged along the cracks.

Out, it is often said that white slurry is exposed on asphalt pavement, which accelerates pavement damage under repeated driving of vehicles.