Impact of Temperature Gradient on Modulus of Asphaltic Concrete Layers
Publication: Journal of Materials in Civil Engineering
Volume 18, Issue 4
Abstract
Temperature is one of the most dominant factors that impact the variation in modulus of asphalt concrete (AC) layers. An accurate relationship between temperature and modulus is necessary to successfully characterize asphalt concrete pavements. The variation in modulus is typically related to the average temperature of a layer. However, the temperature gradient within a layer also plays a role in that relationship. The impact of temperature gradient on modulus of AC layers is reported in this paper. A test setup that can simulate the variation in temperature with time of day was developed and used. With the data obtained, a preliminary relationship between temperature gradient and modulus has been developed. The next step of this study is to develop a model that can be used in pavement analysis.
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Acknowledgments
This work was supported by the Texas Department of Transportation. The writers would like to express their sincere appreciation to Stephen Smith, David Head, and Mark McDaniel for their ever-present support and valuable advice.
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Information & Authors
Information
Published In
Journal of Materials in Civil Engineering
Volume 18 • Issue 4 • August 2006
Pages: 492 - 499
Copyright
© 2006 ASCE.
History
Received: Jan 5, 2004
Accepted: Aug 30, 2005
Published online: Aug 1, 2006
Published in print: Aug 2006
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