Correspondence Principle for Characterization of Asphalt Concrete
Publication: Journal of Materials in Civil Engineering
Volume 7, Issue 1
Abstract
In this paper, Schapery's nonlinear elastic-viscoelastic correspondence principle based on pseudostrain concept is introduced as a means of separately evaluating important mechanisms of asphalt concrete under cyclic loading, including time dependence, damage growth, and fracture healing. Earlier work by Kim and Little and the findings from this present study have demonstrated that the correspondence principle can be applied to most of the testing conditions encountered in testing of asphalt concrete. The importance of using proper analytical representation of relaxation modulus in course of calculating pseudostrain is demonstrated using the cyclic data. At the loading frequencies typically used in asphalt-concrete testing (faster than 10 Hz), the creep or relaxation data must be represented in a form that can accurately describe the short time behavior, such as the modified power law. It is concluded that the correspondence principle provides a means of more accurately modeling the damage growth and fracture healing of asphalt concrete under complex cyclic loading.
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References
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Harvey, J., Sousa, J. B., Deacon, J. A., and Monismith, C. L. (1991). “Effect of sample preparation and air-void measurement on asphalt concrete properties.”Transp. Res. Record No. 1317, Transportation Research Board, Washington, D.C., 61–67.
2.
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3.
Kim, Y. R., and Little, D. N. (1989). “Evaluation of healing in asphalt concrete by means of the theory of nonlinear viscoelasticity.”Transp. Res. Record No. 1228, Transportation Research Board, Washington, D. C., 198–210.
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6.
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Copyright © 1995 American Society of Civil Engineers.
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Published online: Feb 1, 1995
Published in print: Feb 1995
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