水稳基层泡沫沥青冷再生配合比设计研究

Mix Proportion Design of Cold In- place Recycling for Foamed Asphalt of Cement Stabilized Base

通过大广高速公路泰赣段路面专项工程泡沫沥青冷再生混合料配合比设计的实例,结合室内试验,确定了所用基质沥青的最佳发泡条件,以及混合料的最佳含水量,研究了不同泡沫沥青含量对冷再生混合料干劈裂强度、湿劈裂强度、干湿劈裂强度比、冻融劈裂强度比的影响,并确定了最佳配合比。

In order to propose the mix proportion of cold in- place recycling for foamed asphalt of cement stablized base,the special project of Taihe- Ganzhou section of Daqing- Guangzhou Freeway was taken as an example to conduct the mix proportion design of foamed asphalt mixture with a cold in- place recycling method.The optimum foaming conditions of matrix asphalt and the optimum water content were determined combined with laboratory tests. The influences of the foamed asphalt contents on the dry splitting strength,wet splitting strength,dry and wet splitting ratio strength and freeze- thaw splitting strength ratio of cold in- place recycling mixtures were analyzed,and the optimum mix proportion was determined.