APR还原再生剂修复老化沥青性能研究

A Study of Restoring the Performance of Aged Asphalt with APR Reductant

通过室内模拟道路沥青不同阶段的老化程度,使用不同剂量的APR还原再生剂修复老化沥青,并结合对路面沥青混合料抽提后的沥青进行试验,验证了APR还原再生剂具有修复老化沥青的功能。试验结果表明老化时间越短则修复效果越好,路面铺筑后实际使用2~3 a后的老化程度使用效果最佳。

Through simulating the indoor aging degree of roads at different stages,using different doses of APR reduction regenerant to repair the aged asphalt,and in combination with the tests of the asphalt extracted from the asphalt mixture,the aged-asphalt-repairing function of APR reduction regenerant is proved.The experimental results show that the shorter the aging time is,the better the repairing effect will be,and the best effect will be obtained when the pavement is actually used for 2 to 3 years.