Effect of Aging on the Low Temperature Performance of Asphalt Binder

Ning Li Li; Xin Po Zhao; Cai Li Zhang; Hu Hui Li; Qing Yi Xiao

doi:10.4028/www.scientific.net/AMM.438-439.369

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 438-439Effect of Aging on the Low Temperature Performance...

Effect of Aging on the Low Temperature Performance of Asphalt Binder

Abstract:

During the service of asphalt pavement, the aging makes asphalt binder become brittle, gradually lose flexibility and adhesion. All these result in the low-temperature properties of asphalt pavement to be poor. This paper conducts the rolling thin film oven test (RTFOT) and pressure aging vessel (PAV) test on base asphalt and rubber-modified asphalt respectively. The bending beam rheometer (BBR) test was conducted on original asphalts, rolling thin film oven test (RTFOT) residuals and RTFOT + pressure aging vessel (PAV) residuals of base asphalt and rubber-modified asphalt respectively. Results indicate that the low-temperature properties of all aged asphalts were declined. The attenuation of low-temperature properties of RTFOT + PAV residuals is larger than that of the RTFOT residuals. The attenuation of different types of asphalt is different. From the overall trend, effect of aging on the low-temperature properties of asphalt binder reduced as the test temperature reduction. The rubber-modified asphalt has superior low-temperature performance than that of base asphalt, and its low-temperature performance decreases more slowly than the base asphalt.

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Periodical:

Applied Mechanics and Materials (Volumes 438-439)

Pages:

369-372

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.438-439.369

Citation:

Cite this paper

Online since:

October 2013

Authors:

Ning Li Li, Xin Po Zhao, Cai Li Zhang, Hu Hui Li, Qing Yi Xiao

Keywords:

Aging, Asphalt Binder, Bending Beam Rheometer (BBR), Pressure Aging Vessel (PAV), Rolling Thin Film Oven Test (RTFOT)

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