Effect of State of Stress on the Resilient Modulus of Base Layer Containing Reclaimed Asphalt Pavement

Abstract

The use of Reclaimed Asphalt Pavement (RAP) as a base layer is a sustainable rehabilitation method and reduces local agency cost. Proper characterizations of the stressdependent behavior of pavement layers have significant impact on the accuracy of pavement response predictions. This research examines which constitutive model is the most appropriate for predicting the resilient behavior of RAP as a base layer. The Resilient modulus (MR) was examined in the laboratory for specimens containing different ratios of RAP and aggregate. The MR of RAP/aggregate blends were higher, less sensitive to bulk stress and more sensitive to confining pressure compared to base aggregate. The MEPDG model that presented the nonlinear resilient behavior of unbound layers fitted the RAP material and was mathematically stable.

Department(s)

Civil, Architectural and Environmental Engineering

Keywords and Phrases

Base Layer; RAP; Reclaimed Asphalt Pavement; Resilient Modulus

International Standard Serial Number (ISSN)

1468-0629

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2011 Taylor & Francis, All rights reserved.

Publication Date

01 Jan 2011

Link to Full Text

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