碎石封层在路面结构下封层中的应用

Application of Chip Seal in Pavement Sub-seal layer

碎石封层用于路面结构的下封层,具有防水、应力吸收、层间联结、调平等功能。作为路面结构的功能层,既可以应用于旧路改造结构设计中,又可以应用于新建路面结构中。碎石封层设计应根据其在结构层中的特点进行设计。

Chip seal used in pavement sub-seal layer has many merits,such as waterproofing,stress absorbing,inter-layer connecting, leveling and so on.As a function layer,it can be applied not only in new pavement construction,but also in old pavement reconstruction. Chip seal should be design in accordance with its structural function.