Waterborne Epoxy Resin–Polyurethane–Emulsified Asphalt: Preparation and Properties
Publication: Journal of Materials in Civil Engineering
Volume 31, Issue 11
Abstract
To obtain a waterproof binding material for bridge decks with properties of high bonding strength at high temperatures and high flexibility at low temperatures, a waterborne epoxy resin–polyurethane–emulsified asphalt (WEPEA) was prepared which can be constructed in a cold state and cured rapidly at room temperature. The composition of WEPEA was determined based on the tensile strength and elongation at breaking. The road performance of WEPEA was systematically investigated based on its high-temperature bonding properties, low-temperature flexibility, adhesion, waterproofing performance, and aging resistance. In addition, the performance of WEPEA was compared with that of SBS-modified asphalt and rubber asphalt. The viscosity variation and micromorphology of WEPEA were investigated, and the compatibility and stability of each component were verified. The results show that waterborne polyurethane can effectively improve the flexibility of emulsified asphalt with a high content of waterborne epoxy resin. WEPEA exhibited excellent bonding strength, crack resistance and anti-impact properties, adhesion to aggregates, and water stability. These properties of WEPEA were all superior to those of the SBS-modified asphalt and rubber asphalt.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
This work is supported by Fundamental Research Funds for the Central Universities (Program Nos. 300102218210, 300102218304, and 300102219314), Zhejiang Wenzhou Yongtaiwen Expressway Innovation Project (Program Nos. 220021170007), Science and Technology Planning Project of Shandong Transportation Department (Program Nos. 2018B50), Transportation Science and Technology Development Plan in Tianjin Municipality of China (Program No. 2017A-12) and Science and Technology Project of Henan Transportation Department (Program No. 2018J8). That sponsorship and interest are gratefully acknowledged.
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Published In
Journal of Materials in Civil Engineering
Volume 31 • Issue 11 • November 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Jan 7, 2019
Accepted: May 29, 2019
Published online: Aug 24, 2019
Published in print: Nov 1, 2019
Discussion open until: Jan 24, 2020
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