Yin, F., Moraes, R., Verma, M., Montanez, J., Tran, N., Epps Martin, A., & Arambula-Mercado, E. (2025). Impact of Virgin Binders on IDEAL-CT Results of RAP Asphalt Mixtures. 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. 201–204). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10666
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 evaluated the impact of virgin binders on the Indirect Tensile Asphalt Cracking Test (IDEAL-CT) results of asphalt mixtures containing reclaimed asphalt pavement (RAP). A total of 14 RAP mixtures were tested, covering two U.S. climate zones, four mix designs, and six virgin binders. Each virgin binder underwent rheological characterization at three aging conditions: unaged, rolling thin film oven (RTFO) plus 20-hour pressure aging vessel (PAV) aging, and RTFO plus 40-hour PAV aging. The test results showed that using a softer virgin binder improved the IDEAL-CT results, whereas using a polymer modified asphalt binder did not show similar benefits. The impact of binder source on the IDEAL-CT results was found to vary depending on the RAP mix design. Moreover, the modified Glover-Rowe (G-R) parameter at 15°C and 10 Hz after 40-hour PAV aging demonstrated the strongest correlation to the IDEAL-CT results, suggesting its potential utility as a mix design tool for screening virgin binders to assess the cracking resistance of RAP mixtures.
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Research Areas:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
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