Simulation of Permanent Deformation in High-Modulus Asphalt Pavement Using the Bailey-Norton Creep Law
Publication: Journal of Materials in Civil Engineering
Volume 28, Issue 7
Abstract
The objective of this research is to evaluate the permanent deformation of high-modulus asphalt concrete (HMAC) pavement in terms of the viscoelastic theory. Based on the Bailey-Norton creep law, parameters of HMAC were obtained from the creep test. Combined with theses parameters, a finite-element model of a pavement with HMAC in the middle course was constructed and its deformation was simulated. In addition, the impact of HMAC modulus, temperature, and axle load as well as asphaltic thickness on the deformation was analyzed. Results indicate that the deformation of the HMAC pavement was less than that in the asphalt concrete (AC) pavement, and the deformation of the former decreased with the rise of HMAC modulus. Moreover, the optimum modulus ranging from 2,000 to 2,400 MPa is recommended for application. In addition, the pavement deformation increased linearly with depths of the AC courses whereas it decreased with the increase of the HMAC thickness in a cubic polynomial way. Finally, a model to predict rutting in the HMAC pavement is proposed.
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Acknowledgments
This research was supported by the Transportation Department of Shandong Province (Grant No. 2008Y007), the National Natural Science Foundation (Grant No. 51008033), the Transportation Department of Hebei Province (Grant No. T-2012107, Y-2012014), the Transportation Department of Hainan Province (Grant No. 201000005) and the Transportation Department of Hubei Province of China (Grant No. Ejiaokejiao [2013] 731).
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Published In
Journal of Materials in Civil Engineering
Volume 28 • Issue 7 • July 2016
Copyright
© 2016 American Society of Civil Engineers.
History
Received: May 7, 2015
Accepted: Oct 20, 2015
Published online: Jan 19, 2016
Discussion open until: Jun 19, 2016
Published in print: Jul 1, 2016
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