Study on low temperature creep characteristics of recycled asphalt mortar

Abstract

Abstract: In order to study the low-temperature creep characteristics of recycledasphalt binder from reclaimed pavement materials,bending beam rheometer(BBR) tests were performed to evaluate the performance characteristics of both the original reclaimed asphalt binder and rejuvenator-modified asphalt binder.The results show that both the stiffness modulus of the recycled asphalt glue and the recycled asphalt glue gradually decrease with the increase of loading time, while the creep rate gradually increases with the increase of loading time. The blending amount is inversely proportional to the stiffness modulus of the reclaimed asphalt mortar and its creep rate is inversely proportional. Additionally, as the amount of regenerant increases, the low-temperature cracking resistance of the reclaimed asphalt mortar improves.

Key words: recycled asphalt mortar, regenerant, BBR, low temperature creep characteristics, stiffness modulus, creep rate

CLC Number:

U414

ZHANG Gao-fang, LAI Ping, LI Ping, CHEN Long-jian, LI Ning. Study on low temperature creep characteristics of recycled asphalt mortar[J]. Journal of Lanzhou University of Technology, 2025, 51(2): 118-125.

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