ORIGINAL RESEARCH article
Front. Mater.
Sec. Polymeric and Composite Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1655313
Performance Evaluation of Epoxy-60% Zinc Coating for Steel Bridge Decks: Physical Properties Analysis and Optimal Application Window Determination
Provisionally accepted
- 1Changda Municipal Engineering (Guangdong) Co., Ltd., Zhongshan, China
- 2Poly Changda Engineering Co., Ltd., Guangzhou, China
- 3Foshan University, Foshan, China
- 4XIAONING INSTITUTE OF ROADWAY ENGINEERING, Guangzhou, China
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Evaluating the performance of epoxy-60% zinc coatings on steel bridge decks is essential for determining the optimal construction window to ensure long-term corrosion resistance and preventing delamination of overlay layers. The research systematically assessed the curing process, environmental exposure effects, and interlayer bonding strength of the epoxy-60% zinc coatings. Curing characteristics were analyzed, revealing that full curing is achieved within 7.5 to 8 days at 25°C, while bonding strength significantly decreases after 60 days of natural environmental exposure. The effect of surface cleaning before applying the waterproof bonding layer was also examined, showing a substantial enhancement in bonding strength. The findings indicate that epoxy-60% zinc coating provides effective protection against corrosion and maintains structural integrity when applied within 60 days of curing. It is recommended to limit environmental exposure to no more than 60 days, with regular monitoring and proper surface preparation ensuring optimal performance. These insights contribute to understanding the performance of epoxy-60% zinc coatings and offer valuable guidelines for their application on steel bridge decks.
Keywords: Epoxy-60% zinc coating, steel bridge deck, Curing process, natural environmental exposure, Bonding strength, construction window period
Received: 27 Jun 2025; Accepted: 12 Aug 2025.
Copyright: © 2025 Tang, Mao, Wan, Xiong, Chen and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Xuetang Xiong, Foshan University, Foshan, China
Bo Chen, Foshan University, Foshan, China
Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.