A Comprehensive Study on the Rejuvenation Efficiency of Compound Rejuvenators for the Characterization of the Bituminous Binder, Mortar, and Mixture
Mingliang Li (Research Institute of Highway Ministry of Transport)
Song Ren (TU Delft - Pavement Engineering)
X. Liu (TU Delft - Pavement Engineering)
Zhe Wu (Jiangsu Aoxin Science & Technology)
Haopeng Zhang (Sinopec Fuel Oil Shandong)
Weiyu Fan (China University of Petroleum (East China))
P. Lin (TU Delft - Pavement Engineering)
Jian Xu (Research Institute of Highway Ministry of Transport)
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Abstract
This study aims to comprehensively investigate the rejuvenation efficiency of various self-developed compound rejuvenators on the physical, mechanical, and aging properties of aged bitumen, asphalt mortar, and mixture. The results revealed that the restoration capacity of vacuum distilled-oil rejuvenators on high-and-low temperature performance-grade of aged bitumen is more significant. In contrast, an aromatic-oil based rejuvenator is good at enhancing low-temperature grade and aging resistance. Moreover, the temperature and time of the curing conditions for mixing recycling of asphalt mixture were optimized as 150 °C and 120 min. Furthermore, the sufficient anti-rutting, structural stability, and moisture resistance of recycled asphalt mixture affirmed the rejuvenation efficiency of compound rejuvenators.
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