Effects of Aging on the Low Temperature Properties of Asphalt Binder and its Mixture

Abstract:

Effect of aging on physical properties of asphalt binder was studied. The relationship between degradation of the low temperature properties of asphalt binder and asphalt mixture was also investigated. After the thin film oven test (TFOT) with different aging time, the AH-70 binder and the SBS modified asphalt binder were used to prepared asphalt mixture samples. The binder was characterized using penetration, ductility and Beam Bending Rheometer (BBR), and the low temperature cracking resistance of asphalt mixture was studied by Three-point Bending Fracture (TBF). The correlation between different physical parameters of binder, as well as between different aging properties of the binder and asphalt mixture, was examined. The results showed that aging influenced binder physics significantly, and resulted in a decline in the properties of low temperature cracking resistance of asphalt mixture. Although, aging susceptibility of binder and asphalt mixture may be ranked differently when different evaluation methods ware used, a strong correlation was observed between the aging of binder and asphalt mixture.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 2018-2022
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.2018
• Online since: June 2017
• Authors: Zhang Chao Cui*, Ling Pang, Nai Zhi Zhang, Xue Mei Zhang, He Chuan Li
• Keywords: Aging, Asphalt Mixture, Binder, Low-Temperature Properties

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