Application of Shakedown Theory in Characterizing Traditional and Recycled Pavement Base Materials
Publication: Journal of Transportation Engineering
Volume 136, Issue 3
Abstract
To facilitate the use of recycled materials in pavement construction, a mechanistic-based approach is required to better characterize pavement base materials. This paper demonstrates the application of the shakedown theory to characterize the behavior of traditional and recycled base materials based on laboratory repeated load triaxial (RLT) tests and full-scaled accelerated loading tests. A new approach that is based on dissipated energy is proposed to explain different shakedown responses of tested materials under repeated loading. The dissipated energy approach illustrated that there are two responses during RLT tests, namely, stable and unstable responses, which are dependent on the loading levels and type of tested material. It was also observed that the transition from the stable to unstable response represents gradual microstructural adjustments of tested materials to accommodate the applied loading. This gradual transition explains the difficulties in identifying some material responses within the shakedown theory based only on the permanent strain rate criteria. Based on the results of this study, a mechanistic-based design procedure to incorporate various recycled materials into pavement bases is recommended.
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Information & Authors
Information
Published In
Journal of Transportation Engineering
Volume 136 • Issue 3 • March 2010
Pages: 214 - 222
Copyright
© 2010 ASCE.
History
Received: Sep 14, 2007
Accepted: Oct 20, 2009
Published online: Feb 12, 2010
Published in print: Mar 2010
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