Failure Mode and Bonding Evaluation at the Interface between Asphalt Surface and Semirigid Base
Publication: Journal of Materials in Civil Engineering
Volume 29, Issue 9
Abstract
In this paper, two interface treatments were applied to improve the interface condition, and the shear failure test and repeated shear test were conducted to evaluate the bonding conditions. It is found that the interface shear strength and horizontal shear reaction modulus are largest for the roughening-treated specimen, meaning the improvement on the interface bonding condition of roughening treatment is the best. For all three kinds of specimens, both the horizontal shear reaction modulus and the interface bonding percentage decrease with the loading cycles, meaning the interface bonding condition becomes worse due the repeated loading effects. Compared with the untreated and emulsified asphalt-treated specimen, the roughening-treated specimen has the largest shear reaction modulus, the largest bonding percentage, and the smallest modulus reduction ratio, meaning the antidecay property of roughening treatment is the best. However, even with the best treatment of roughening, the interface is not good enough to ensure the full bonding condition.
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Acknowledgments
This work was supported by the National Natural Science Foundation of China (Nos. 51378073 and 51408043), the Department of Science & Technology of Shaanxi Province (Nos. 2016KJXX-69 and 2016ZDJC-24), the Special Fund for Basic Scientific Research of Central College of Chang’an University (Nos. 310821153502 and 310821173501), and the Fundamental Research Funds for the Central Universities of Hohai University (No. 2015B17014). The authors gratefully acknowledge their financial support.
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Information
Published In
Journal of Materials in Civil Engineering
Volume 29 • Issue 9 • September 2017
Copyright
©2017 American Society of Civil Engineers.
History
Received: Sep 26, 2016
Accepted: Jan 24, 2017
Published ahead of print: Apr 18, 2017
Published online: Apr 19, 2017
Published in print: Sep 1, 2017
Discussion open until: Sep 19, 2017
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