Abstract
Long-term pavement performance (LTPP) projects with hot mix asphalt were evaluated using three proposed indicators for low temperature cracking resistance. The primary objectives were to compare ways to combine stiffness and relaxation properties to correlate with cracking, assess data collection schemes in the LTPP relating to the analysis methods, and provide agencies with information to develop approaches for cataloging binders and performance. The Superpave low-temperature specification was compared with the recently developed Glover-Rowe parameter to relate laboratory-measured properties to field cracking. Complex modulus and phase-angle master curves were constructed to plot binder properties in Black Space. Results show the Superpave specification and Glover-Rowe parameter were able to capture one significantly cracked section which had test data obtained within a reasonable amount of time from field measurement. However, the available LTPP data was not ideal for Glover-Rowe analysis, where frequency sweeps at several temperatures are desired. The information presented is particularly relevant as tighter budgets delay maintenance and rehabilitation, exposing pavements to extensive aging.
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Acknowledgments
The authors wish to thank the reviewers and representatives from the Federal Highway Administration and the 2014 Transportation and Development Institute of the American Society of Civil Engineers and LTPP International Data Analysis Contest. This paper was selected as the Runner-Up in the Graduate Category and the insight of the reviewers was critical to the success of this study.
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 10 • October 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: Jun 24, 2015
Accepted: Jan 27, 2016
Published online: Apr 25, 2016
Discussion open until: Sep 25, 2016
Published in print: Oct 1, 2016
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