Comparative Study on Temperature Stresses in Asphalt Material Using Nonlinear Viscoelastic Approach
Publication: Journal of Transportation Engineering
Volume 137, Issue 10
Abstract
An accurate estimate of temperature stress in asphalt pavements is an important consideration for colder regions. In asphalt, a viscoelastic material, the developed stress depends on the trend of temperature variation and the relaxation modulus of the asphalt mix. This paper presents a comparative study of the temperature stresses by considering different temperature profiles for the same temperature differential and different relaxation models for the same asphalt mix. A nonlinear viscoelastic approach was used for the stress calculation. From this study, it was concluded that both the temperature profile and the relaxation model significantly affect the stress profile. Also, for cases in which the rate of change of the temperature was nonlinear, the computed maximum stress value for a given temperature profile seemed to be different within few cycle periods.
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Information
Published In
Journal of Transportation Engineering
Volume 137 • Issue 10 • October 2011
Pages: 717 - 722
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Dec 24, 2009
Accepted: Dec 28, 2010
Published online: Dec 30, 2010
Published in print: Oct 1, 2011
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