Survey on the Recycle Asphalt Pavement

Jianfeng ZHENG

School of Civil Engineering, Chongqing Jiaotong University, Chongqing, 400074, China

Abstract: In this paper ,based on the aging of asphalt pavement, tries to find out how to improve the aging condition of asphalt pavement by analyzing the causes of aging of asphalt pavement, the mechanism of as-phalt pavement regeneration agent and the technology of recycled asphalt. The aging problem of asphalt pavement was analyzed by softening point, needle penetration, ductility and asphalt four components (gum, bitumen, aromatic, saturated) from three indexes of asphalt pavement. The optimum utilization rate of regenerated agent and the improvement of regeneration function of asphalt pavement were given by experiment. At the same time, the road regeneration technique is proposed for the old asphalt pavement. The future design and construction of asphalt pavement regeneration are prospected.

Keywords: Aging of Asphalt Pavement; Regeneration agent; Regeneration pathway; Four components of asphalt