Fatigue and Healing of Asphalt Mixtures: Discriminate Analysis of Fatigue Curves
Publication: Journal of Transportation Engineering
Volume 132, Issue 2
Abstract
Fatigue laws obtained by means of laboratory tests do not usually take into account the fact that asphalt mixtures in highways have rest periods (without loads). These rest periods tend to increase the fatigue life of mixtures due to the phenomenon known as healing. A new fatigue test which includes rest periods has been developed. In order to study healing, tests with and without rest have been carried out on asphalt concrete, and the corresponding fatigue curves have been obtained. The test results show an increase of five to ten times fatigue strength. This paper summarizes the main experiences. The testing method used in the research is described. The results are analyzed by means of a statistical technique called discriminate analysis.
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Acknowledgments
The writers are grateful to the Spanish Road Research Center (CEDEX), for supporting this research work at its facilities.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 132 • Issue 2 • February 2006
Pages: 168 - 174
Copyright
© 2006 ASCE.
History
Received: Apr 13, 2004
Accepted: May 5, 2005
Published online: Feb 1, 2006
Published in print: Feb 2006
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