柔性碎石基层在高等级公路设计中的应用研究

The Application Research of Flexible Crushed Stones Base in High Grade Highway Design

柔性基层所组成的材料以粒料为主而具有较大的孔隙率,其力学特点不受温度、湿度的影响而产生收缩裂缝,相邻间的裂缝也不会通过柔性基层反射到面层,具有良好的抗裂、防裂与阻止反射裂缝扩展的能力,因为孔隙率大而能够及时排除进入路面结构内的雨水,减轻路面结构层的水害影响。

Flexible crushed stones base is given priority to with aggregate and has a larger porosity, it doesn＇t occur the shrinkage cracks because its mechanical characteristics are not affected by temperature, humidity. The cracks between adjacent are not by flexible reflection at the grass-roots level to surface, ITod crack resistance, crack and the ability to prevent reflection crack extension, for large porosity into the pavement structure of rainwater can be timely excluded, it also can relieve the damage of pavement structure layer.