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- W4311772425 endingPage "135587" @default.
- W4311772425 startingPage "135587" @default.
- W4311772425 abstract "Incorporating reclaimed asphalt pavement (RAP) increases concern about long-term fatigue and cracking resistance of the resultant mixture due to the presence of an aged binder. Using a rejuvenator is one of the most promising methods to prolong the aging time for initial cracking and allow the inclusion of higher RAP content. Many discrepancies exist in the literature about rejuvenators' effectiveness in improving the fatigue performance of RAP binder and mixture. These ambiguous and contradictory findings are attributed to using different rejuvenator types and dosages, RAP sources and percentages, binders and mixture fatigue testing approaches. This paper comprehensively reviews and investigates the existing literature to fully understand the rejuvenation mechanism and its impact on the fatigue and cracking resistance of RAP binder and mixture using the most available tests and indicators. In addition, a rigorous laboratory study is carried out to determine the sensitivity of indicators to mix composition and variability. It is concluded that the inclusion of rejuvenators into RAP binders and mixtures may not improve their fatigue and cracking performance to the same level as virgin materials. But by utilizing polymer modification, the bonding between materials increases significantly, which results in better fatigue performance of rejuvenated RAP materials. Despite the positive impact of rejuvenators on RAP mixture fatigue performance, a comparison of different tests results does not offer a consistent indicator for determining fatigue resistance. Hence, it is recommended that the future research should be carried out with reasonable test methods, more complicated analytical techniques, service life characterization models, and climate identical test conditions, to clarify the durability index. Also, a complete evaluation of field performance utilizing RAP and rejuvenator is valuable." @default.
- W4311772425 created "2022-12-28" @default.
- W4311772425 creator A5031133008 @default.
- W4311772425 creator A5049027665 @default.
- W4311772425 creator A5052262562 @default.
- W4311772425 creator A5054482380 @default.
- W4311772425 creator A5079014547 @default.
- W4311772425 date "2023-01-01" @default.
- W4311772425 modified "2023-10-02" @default.
- W4311772425 title "Fatigue and intermediate-temperature cracking performance of rejuvenated recycled asphalt binders and mixtures: A review" @default.
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