Characterization of Shear Resistance of Interlayer between Concrete Bridge Deck and Asphalt Concrete Overlay Utilizing Inclination Shear Test
Publication: Journal of Materials in Civil Engineering
Volume 34, Issue 2
Abstract
Hot-mix asphalt (HMA), which can be employed as a wearing course on concrete bridge decks, provides a smooth surface for riding. However, some bridge deck asphalt surfaces experienced layer slippage, which is a result of failure of interlayer between HMA overlay and concrete deck due to the lack of layer bonding. In this study, the shear properties of the interlayer between concrete decks and HMA overlay were evaluated through inclination shear tests. Three types of interlayer materials were investigated, including asphalt emulsion, asphalt cement, and epoxy asphalt. The inclination shear test procedure was developed to determine the envelope of shear strength and energy consumption during the shear test. This test was used to evaluate the contribution of internal friction angle and cohesion to shear resistance. Results indicated that as the temperature increased, the contribution of cohesion to shear resistance decreased. The contribution of internal friction angle was associated with the applied normal stresses. The energy consumption of cohesion was sensitive to temperature. Epoxy asphalt interlayer exhibited better shear resistance performance than the other two types of material.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Disclaimer
The contents of this paper reflect the views of the authors, who are responsible for the facts and the accuracy of the data presented herein, and do not reflect the views of Tennessee DOT. The contents do not constitute a standard, specification, or regulation.
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© 2021 American Society of Civil Engineers.
History
Received: Oct 30, 2020
Accepted: Jun 3, 2021
Published online: Nov 19, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 19, 2022
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