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Advances in Materials Science and Engineering
Volume 2018 (2018), Article ID 8026798, 9 pages
https://doi.org/10.1155/2018/8026798
Research Article

Evaluation of Fracture Resistance of Asphalt Mixtures Using the Single-Edge Notched Beams

1CCCC First Highway Consultants Co., Ltd., Xi’an, Shaanxi 710065, China
2School of Architecture and Civil Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi, China
3Guangxi Key Lab of Road Structure and Materials, Guangxi Transportation Research & Consulting Co., Ltd., Nanning, Guangxi, China
4Key Laboratory for Special Area Highway Engineering of Ministry of Education, Chang’an University, Xi’an, Shaanxi, China
5School of Highway, Chang’an University, Xi’an, Shaanxi, China

Correspondence should be addressed to Xiaolong Zou; moc.361@4321_gnoloaixuoz

Received 25 October 2017; Accepted 20 March 2018; Published 12 April 2018

Academic Editor: Hiroshi Noguchi

Copyright © 2018 Biao Ding 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 determine and compare the fracture properties of different asphalt mixtures, single-edge notched beam (SENB) tests using three types of asphalt mixtures were applied in this study under the conditions of different notched depths and different temperatures. The effects of notched depths and temperatures on the fracture toughness and fracture energy were analyzed. The results indicate that the notch depth has no significant effects on the fracture toughness and the fracture energy, but the gradation has relatively obvious effects on the fracture energy, which the larger contents of course aggregate leads to increase the discreteness of the fracture energy of the specimen. The temperature has significant effects on the ultimate loads, fracture energy, and fracture toughness. The ultimate loads of the SENBs reach the peak value at 0°C, which could be resulted in that viscoelastic properties of asphalt mixture depend with temperatures. The fracture toughness at −20°C of continuously graded asphalt mixtures are higher than those of gap-graded asphalt mixtures. On the contrary, the fracture toughness of gap-graded asphalt mixtures is higher at temperatures from −10°C to 20°C. The fracture energy increases with temperatures, and the fracture energy of SMA-13 is significantly larger than those of AC-13 and AC-16.