Journal Published Online: 01 November 2018
Volume 48, Issue 4

Dynamic Compressive Behavior of Asphalt Concrete Material under Impact Load

CODEN: JTEVAB

Abstract

In this article, the dynamic compressive behavior of asphalt concrete was investigated through the servo-hydraulic compressive test and Split Hopkinson Pressure Bar (SHPB) test. At a given temperature, asphalt concrete deformed slowly and permanently under quasi-static to low strain rate loading. Under higher strain rates loading, it suffered fracture. The failure plane of the asphalt concrete under low strain rates loading occurred at binder, while under high strain rates loading along the binder and aggregates. It was also found that the first branch of Dynamic Increase Factor (DIF) curve performed a smooth increase in strength, while the second branch increased sharply at the strain rate of 100 s−1. The suitability of the input DIF curve for numerical simulation was also discussed. A numerical model of asphalt concrete subjected to the SHPB test was developed and validated. It suggests the obtained compressive DIFs of asphalt concrete should be modified to avoid the duplication of the inertial effects. The modified DIF curve for current asphalt concrete material was also given. This research will be of direct importance to both practitioners and researchers involved with pavement design.

Author Information

Wu, Jun
School of Urban Railway Transportation, Shanghai University of Engineering Science, Administration Building, Shanghai, China
Liu, Xuemei
School of Civil Engineering and Built Environment, Queensland University of Technology, Brisbane, Australia
Wu, Hao
College of Civil Engineering, Tongji University, Shanghai, China
Li, Liang
Key Laboratory of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing, China
Liu, Zhongxian
Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin, China
Pages: 18
Price: $25.00
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Details
Stock #: JTE20180001
ISSN: 0090-3973
DOI: 10.1520/JTE20180001