Table of Contents Author Guidelines Submit a Manuscript
Advances in Materials Science and Engineering
Volume 2017, Article ID 3154634, 12 pages
https://doi.org/10.1155/2017/3154634
Research Article

Laboratory Evaluation of Aging Behaviour of SBS Modified Asphalt

Key Laboratory of Road Structure & Material, Research Institute of Highway, Ministry of Transport, Beijing 100088, China

Correspondence should be addressed to Jie Wang; nc.hoir@gnaw.j

Received 12 April 2017; Revised 8 June 2017; Accepted 21 June 2017; Published 27 August 2017

Academic Editor: Hainian Wang

Copyright © 2017 Jie Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

To study the effect of aging SBS modified asphalt on the performance of asphalt pavement, aging at various times and temperatures was conducted with thin film oven, and then tests were made about the penetration, softening point, ductility, viscosity, toughness, and fluorescence microscopy of modified asphalt with different aging levels. The results show that, with the increasing of aging time, the penetration and ductility of modified asphalt decrease while its softening point and viscosity increase, and the variation trend of the toughness and tenacity is related to the aging temperature; the aging dynamic model with viscosity as parameter can well characterize the aging process of modified asphalt; at microlevel, with the decreasing of SBS particle size, the uniformity of particle size is better. Analysis of macroscopic properties, microscopic characteristics, and significance shows that the SBS particle area ratio has a significant correlation with tenacity as the aging temperature changes. When the aging temperature is 163°C, the SBS particle area ratio still has a significant correlation with tenacity as the aging time changes.