Effects of bearing capacity and load transfer efficiency of jointed concrete pavements on reflective cracking in hot-mix asphalt overlays

J. Baek, I. L. Al-Qadi

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Reflective cracking is a major distress in hot-mix asphalt (HMA) overlays and is induced in the vicinity of discontinuities beneath the overlay due to environmental and vehicular loading. This study investigated the mixed-mode fracture mechanism of load-associated reflective cracking in HMA overlay placed on jointed concrete pavement (JCP). Using a three-dimensional finite element model, the joint response to loading was evaluated using virtual falling weight deflectometer (FWD) testing. In addition, a transient moving vehicular load was applied on the HMA overlay surface. The behavior of reflective cracking was investigated with respect to bearing capacity as well as load transfer efficiency (LTE) of the JCP. Reflective cracking potential was investigated using FWD average deflection, δ ave, and deflection ratio, δ u/δ l. This study concluded that 1) critical tensile and shear stresses at the joint primarily depend on pavement subgrade bearing capacity and 2) bearing capacity highly affects mode I reflective cracking initiation.

Original languageEnglish (US)
Title of host publicationBearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
Pages1039-1049
Number of pages11
StatePublished - Dec 1 2009
Event8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCR2A'09 - Champaign, IL, United States
Duration: Jun 29 2009 → Jul 2 2009

Publication series

NameBearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
Volume2

Other

Other8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCR2A'09
CountryUnited States
CityChampaign, IL
Period6/29/09 → 7/2/09

ASJC Scopus subject areas

  • Civil and Structural Engineering

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    • Cite this

    Baek, J., & Al-Qadi, I. L. (2009). Effects of bearing capacity and load transfer efficiency of jointed concrete pavements on reflective cracking in hot-mix asphalt overlays. In Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields (pp. 1039-1049). (Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields; Vol. 2).