Analysis on the Shear Behavior of Steel-Asphalt Interface Using Discrete Element Method on the Mesoscopic Scale
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 3
Abstract
Shear failure is a major distress in steel bridge deck pavement (SBDP). To investigate the shear behavior of steel-asphalt interface (SAI), experimental study and numerical analysis were proposed and performed. First, the direct shear tests at two temperatures of 30°C and 60°C were carried out to provide verification for numerical analysis. Second, the virtual tests were conducted under the same condition as laboratory test using discrete element (DE) method to evaluate the shear behavior of SAI and analyze the influence of temperature on the development of interlaminar mesocracks. Third, factors affecting the interlaminar mesomechanical properties, including interface roughness and interfacial bubbles, were proposed and analyzed at 30°C. Results show that with the increase of shear displacement lots of interlaminar mesocracks occur rapidly with the decreasing of shear stress. The mesocracks occur more easily under high temperature. The shear strength of SAI increases at first and then decreases with the increase of interface roughness and decreases with the increase of interfacial bubbles.
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Data Availability Statement
Some or all data that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors appreciate the financial support from the National Natural Science Foundation of China (No. 51308193).
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Published In
Journal of Materials in Civil Engineering
Volume 35 • Issue 3 • March 2023
Copyright
© 2022 American Society of Civil Engineers.
History
Received: Dec 14, 2021
Accepted: Jun 24, 2022
Published online: Dec 26, 2022
Published in print: Mar 1, 2023
Discussion open until: May 26, 2023
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