Discussion on the Design Method of Modified Pac-asphalt Mixture Mix 

Haojie Cai 

Chongqing Jiaotong University, Chongqing, 400070, China 

Abstract: In order to design a meet the drainage and satisfy the road performance of PAC asphalt mixture, first from the drainage asphalt surface structure and characteristics are expounded the characteristics of pave-ment drainage, and then according to the characteristics of the drainage pavement on PAC asphalt mixture is put forward, according to the requirements of related to the performance of raw materials were tested, the mixing ratio of raw materials selected to meet the requirements. Then, the gradation and the optimal ratio of asphalt were determined, and finally, the performance of drainage asphalt was tested to meet the relevant spe-cifications. 

Keywords: Drainage pavement; The PAC; High viscosity modified asphalt; Oil-stone rati; Asphalt mix ratio