Effect of Bond Condition on Flexible Pavement Performance
Publication: Journal of Transportation Engineering
Volume 131, Issue 11
Abstract
This paper summarizes a theoretical study undertaken to provide a deeper understanding of the consequences of poor bond on flexible pavement performance. Two different modeling approaches have been used. In the first, the pavement structure was analyzed using a layered linear elastic program taking into account different degrees of interface bond between pavement layers and a static horizontal load in addition to the standard vertical dual load. The results indicate that the condition of the bond between the binder course and the base can reduce the life of the pavement structure by up to 80%. For poor bond between the surface course and binder course, the pavement life was found to be particularly sensitive to any horizontal loading applied by the traffic. Static linear two-dimensional (2D) finite element (FE) modeling confirmed these results. Nonlinear 2D FE modeling was also performed to investigate the effect of more realistic bond conditions between pavement layers. The results cast additional light on the overall structural performance of pavement with different degrees of bond subjected to both horizontal and vertical forces.
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Acknowledgments
The research presented herein was carried out at the School of Civil Engineering, Nottingham University, U.K., under a contract financially supported by the Engineering and Physical Sciences Research Council (EPSRC), U.K. The following organizations also provided support for the project: Aggregate Industries, Dynatest, Nottinghamshire County Council, Nynas, and Scott Wilson Pavement Engineering and Tarmac.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 131 • Issue 11 • November 2005
Pages: 880 - 888
Copyright
© 2005 ASCE.
History
Received: Nov 19, 2004
Accepted: Feb 15, 2005
Published online: Nov 1, 2005
Published in print: Nov 2005
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