Wang, Z., Cui, B., & Wang, H. (2025). Aging and moisture effect of asphalt binder on adhesion properties. In L. Eberhardsteiner, B. Hofko, & R. Blab (Eds.), Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria (pp. 250–253). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10641
Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria
This study explores the effects of oxidative aging and moisture on the adhesion properties of asphalt binders using atomic force microscopy (AFM) tests and molecular dynamics (MD) simulations. AFM results show that long-term aging substantially reduces asphalt binder adhesion in dry and wet conditions, weakening asphalt-aggregate bonding. After longer time of water immersion, asphalt binder exacerbates the reduction in adhesion, with aged asphalt experiencing more pronounced decrease than asphalt. MD simulations show the consistent trend of asphalt aging effect on adhesion in terms of interaction energy using the experiment-derived molecular models. However, the asphalt model with diffused water shows limitations in capturing the impact of moisture content on adhesion.
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Research Areas:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
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