Study on the adhesion property between asphalt binder and aggregate: A state-of-the-art review

The adhesion property between asphalt binder and aggregate significantly influences structural stability, service performance, and damage evolution of the asphalt mixture. However, the understanding of adhesion property is still immature. Some research gaps still exist and need to be investigated further, including the adhesion mechanism cannot explain the moisture damage phenomenon well, the adhesion characterizations under different scales are weakly associated, and the key factors that play the dominant role in the adhesion property are not clear enough. In this paper, in order to have a comprehensive understand about adhesion property between asphalt binder and aggregate, the common and recent researches about mechanism, evaluation methods and indexes, influence factors, improvements of adhesion property between asphalt binder and aggregate has been reviewed. In addition, further recommendations are also suggested for a better understanding the adhesion property to improve the service life of roads. (C) 2020 Elsevier Ltd. All rights reserved.