TY - GEN
T1 - Effects of bearing capacity and load transfer efficiency of jointed concrete pavements on reflective cracking in hot-mix asphalt overlays
AU - Baek, J.
AU - Al-Qadi, I. L.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Conference contribution
AN - SCOPUS:84859884946
SN - 9780415804325
T3 - Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
SP - 1039
EP - 1049
BT - Bearing Capacity of Roads, Railways and Airfields - Proceedings of the 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields
T2 - 8th International Conference on the Bearing Capacity of Roads, Railways and Airfields, BCR2A'09
Y2 - 29 June 2009 through 2 July 2009
ER -