Mechanics Analysis of Asphalt Pavement with Crumb Rubber Modified Cement Stabilized Macadam Base

Abstract

Reuse of the waste tires in highway engineering is very important for reducing pollution, protecting environment and resources. At present, the rubber chippings from waste tire have been widely used in construction and maintenance of asphalt concrete road surface. But there is little research about cement stabilized macadam base with crumb rubber. This paper used the large-scale finite element analysis software ANSYS to build the pavement structure model, assuming the contact conditon as continuity, analyzed the effect of asphalt pavement by changing the thickness and modulus of cement stabilized macadam base with crumb rubber. The results showed that the value of vertical displacement of crumb rubber modified cement stabilized macadam base is larger than the value of cement stabilized crushed stones base, and increasing the thickness and reducing the modulus of base can decrease tension stress of base bottom.