Journal Published Online: 10 August 2018
Volume 47, Issue 4

Effects of Loading Rate and Temperature on Cracking Resistance Characteristics of Asphalt Mixtures Using Nonnotched Semicircular Bending Tests

CODEN: JTEVAB

Abstract

In this study, the effects of loading rate and temperature on the cracking resistance of asphalt mixtures under static loading were examined by a nonnotched, semicircle bending test. Twenty-four test conditions combined by eight loading rates (0.1, 0.75, 3, 7.5, 15, 30, 50, and 80 mm/min) and three temperatures (−10°C, 0°C, and 15°C) were selected to be conducted using one stone matrix asphalt mixture. Five cracking parameters, namely, peak force (Fmax), peak displacement (Dp), work of before-cracking (Wc), cracking failure displacement (Dcf), and work of cracking failure (Wcf), were proposed in order to evaluate the cracking resistance of asphalt mixtures. According to the results of this study, the cracking failure mode of asphalt mixtures can be divided into three conditions: brittle cracking, flexible damage, and fall in between. For the test condition of a higher loading rate and lower temperature, the cracking failure mode would be closer to brittle cracking. Both loading rate and temperature influence the test results of all cracking parameters in different ways. According to the statistical analysis, peak force is sensitive to loading rate, and the displacement and energy parameters are sensitive to temperature variation.

Author Information

Jiang, Jiwang
College of Transportation Engineering, Southeast University, Nanjing, China
Dong, Qiao
College of Transportation Engineering, Southeast University, Nanjing, China
Ni, Fujian
College of Transportation Engineering, Southeast University, Nanjing, China
Zhao, Yanjing
Nanjing Vocational Institute of Transport Technology, Nanjing, China
Pages: 15
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: JTE20170711
ISSN: 0090-3973
DOI: 10.1520/JTE20170711