Extracting Damping Information from Resilient Modulus Tests
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 12
Abstract
In addition to the dynamic moduli, the damping properties of the different pavement layers are required by most algorithms used for modeling the dynamic responses of pavement caused by moving or impact loads. The importance of the damping properties in estimating the proper responses is well documented in the geotechnical engineering community. The dynamic moduli are typically estimated in the laboratory using the cyclic triaxial (resilient modulus) tests. The feasibility of estimating the damping properties with resilient modulus tests is explored in this paper. The most promising algorithm among the alternatives studied was preliminarily established from the resilient modulus tests carried out on 17 gravel bases, sandy subgrades, and clayey subgrades. The selected method was used to develop a database for further evaluation. The damping coefficient was correlated to the applied stresses, the measured strains, and the nonlinear stiffness parameters (–) obtained from a nonlinear constitutive model commonly used in mechanistic-empirical pavement analysis methodology.
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Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 12 • December 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Dec 7, 2016
Accepted: May 31, 2017
Published online: Sep 23, 2017
Published in print: Dec 1, 2017
Discussion open until: Feb 23, 2018
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