Interfacial Bond Properties of Underwater Concrete Coated with Bisphenol A Epoxy Resins
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Title
- Interfacial Bond Properties of Underwater Concrete Coated with Bisphenol A Epoxy Resins
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Author(s)
- Kim, Sung Won; Yi, Jin-Hak; Hong, Hye Min; Choi, Seoung Ik; Kim, Dongchan; Kim, Min Ook
- KIOST Author(s)
- Yi, Jin-Hak(이진학); Hong, Hye Min(홍혜민); Choi, Seoung Ik(최성익)
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Alternative Author(s)
- 김성원; 이진학; 홍혜민; 최성익
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Publication Year
- 2023-11
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Abstract
- This study investigated changes in the interfacial properties of epoxy-coated concrete exposed to various conditions, regarding the epoxy type, coating equipment, and exposure environment and period. The measured coating thickness and pull-off bond strength exhibited diverse trends, depending on the exposure period and conditions. In the real sea (RS) environment, the average bond strengths for bisphenol A (BPA) (E1), BPA with zinc powder (E2), and BPA with cresyl glycidyl ether (E3) were 1.26, 1.93, and 1.92 MPa, respectively. The coating method did not significantly affect the measured coating thickness and strength values. The conventional roller (D1) exhibited the highest thickness variation, with a value of 214.45 μm. The RS condition significantly increased the coating thickness (34% to 158%) compared to the tap water (TW) condition. The exposure conditions had little impact on bond strength except for E3, which showed an increased strength (2.71 MPa) over 7–91 days, especially under RS conditions, while E2 remained constant at approximately 1.82 MPa. This study offers insights into factors influencing marine concrete coating performance and discusses limitations and future work.
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ISSN
- 2073-4360
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/44721
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DOI
- 10.3390/polym15214290
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Bibliographic Citation
- Polymers, v.15, no.21, 2023
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Publisher
- MDPI Open Access Publishing
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Keywords
- epoxy coating; interfacial properties; marine environment; exposure duration; bond strength; concrete substrate
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Type
- Article
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Language
- English
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Document Type
- Article
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