Influence of Recycling Technology on Hot-recycled Asphalt Mixture’s Low Temperature Anti-cracking Performance

Abstract

Low temperature anti-cracking performance of hot-recycled asphalt mixture was studied, and the influences of different recycling technologies were analyzed (including proportion, pre-heating in mixing processing, time of mixing, and rejuvenating-agent mix technology) on the relative index, including cleavage strength, tensional strain, stiffness modulus, and strain energy density. The experiment result indicate that increasing the proportion of new mixture, sufficient pre-heating the recycled-mixture and increasing the time of mixing will enhance low temperature anti-cracking performance. And changing the rejuvenating agent mix technology can also guarantee recycled-mixture low temperature performance.