Adhesion of Warm-Mix Recycled Asphalt Aggregate Mixtures Based on Surface Free Energy Theory
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 10
Abstract
The present study proposed an adhesion model that incorporates effects of a warming asphalt agent, asphalt, and aggregate in a nonwater or water environment according to the surface free energy theory. The results indicated that the water stability of the recycled asphalt mixture could be evaluated by the adhesion work ratio under water or nonwater conditions. The polar component of the asphalt and the Lewis acid-base force parameter were changed by adding the warming agent; accordingly, the surface free energy of the asphalt was improved, the adhesion ability of the asphalt and the stone was enhanced, and the water stability of the recycled asphalt mixture was promoted.
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Acknowledgments
The authors would like to gratefully acknowledge the financial support of the National Natural Science Foundation of China (Grant No. 51708072), the Science and Technology Commission project of Chongqing (Grant No. cstc2016jcyjA1499), and the Open Foundation Project of State and Local Area Jointed Lab of Traffic Civil Engineering Material (Grant No. LHSYS-2016-007).
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Information
Published In
Journal of Materials in Civil Engineering
Volume 31 • Issue 10 • October 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Aug 18, 2018
Accepted: Feb 28, 2019
Published online: Jul 17, 2019
Published in print: Oct 1, 2019
Discussion open until: Dec 17, 2019
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