Study on Aging Characteristics of Warm Mix Asphalt: Using Softening Point as a Parameter of the Aging Kinetics Model

Abstract:

In order to indicate the aging process and evaluate the aging resistance of warm mix asphalt, thin film oven tests of original asphalts and warm mix asphalts were conducted, and the softening points of different asphalts in aging process were compared. Then, using softening point as a parameter, the aging kinetics model was established and the kinetics parameters were also calculated to reflect the aging performance of different asphalts. It is indicated that warm mix asphalt has larger activation energies and lower reaction rate constant than those of original asphalt, and the aging performance of warm mix asphalt after are better. The aging behavior of warm mix asphalt could be well evaluated by the aging kinetics model.

• Periodical: Applied Mechanics and Materials (Volumes 34-35)
• Pages: 227-231
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.34-35.227
• Online since: October 2010
• Authors: Jiu Peng Zhang, Jian Zhong Pei, Shi Cui Xu, Yu Feng Bi
• Keywords: Aging Kinetics, Aging Performance, Softening Point, Warm Mix Asphalt (WMA)

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