Modified Waterborne Epoxy as a Cold Pavement Binder: Preparation and Long-Term Working Properties
Publication: Journal of Materials in Civil Engineering
Volume 33, Issue 5
Abstract
The purpose is to enhance the working properties of waterborne epoxy resin and improve the quality of cold pavement binder usage. In this study, a modified waterborne polyurethane/epoxy composite was prepared. The influence of the type and content of the polyurethane on the working properties of a composite was studied. The optimum composition and ratio of the composite were determined. The properties of the waterborne epoxy at different working conditions and treatment times were analyzed. The long-term evolution law of property of waterborne epoxy was clarified. The correlation between different working properties of waterborne epoxy was studied. The results show polyurethane can improve the working properties of waterborne epoxy resin. Considering the tensile, bending, and bonding properties, the suitable type of polyurethane is toluene diisocyanate-polybutylene adipate (TDI-PBA), and the suitable content is 15%–20%. With the increase of hydrothermal aging time, the strength of waterborne epoxy resin increases 5%–10%, the flexibility reduces 6%–12%, and the bonding property decreases 70%–75%. After polyurethane modification, the property stability of waterborne epoxy resin is enhanced. The retention rate of the bonding property increases significantly, at approximately 120%–150%.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was sponsored by the Fundamental Research Funds for the Central Universities (300102219701 and 300102219314), the Science and Technology Project of Qilu Transportation Development Group Co., Ltd. (2019QL07), the Science and Technology Planning Project of the Transportation Department in Shandong Province of China (2018B50), and the Transportation Science and Technology Plan in Henan Province of China (2018J8).
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Published In
Journal of Materials in Civil Engineering
Volume 33 • Issue 5 • May 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: May 20, 2020
Accepted: Oct 9, 2020
Published online: Feb 26, 2021
Published in print: May 1, 2021
Discussion open until: Jul 26, 2021
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