In the AC+CRCP composite pavements,the concrete overlays should have good density,stability,durability,low temperature crack resistance,mechanics performance including intensity and deformation performance,and little permeate coefficient.

This article depends on the project of Yunnan Education Committee science and technology, which name was“the new technology research of Expressway Asphalt Pavement Seal in Yunnan”, and begin its systematic research on the maintenance technologies of asphalt pavement by paved thin overlay of the warm mix asphalt of SMA.

Optimum design of asphaltum concrete cover-layer and interlayer;