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Title |
Evaluation of Hydrophobic Performance and Durability of Concrete Coated with Cellulose Nanofiber Mixed Antifouling Coating Agent
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Authors |
장낙섭(Nak Sup Jang) ; 노치훈(Chi Hoon Nho) ; 오홍섭(Hongseob Oh) |
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DOI |
https://doi.org/10.11112/jksmi.2023.27.5.1 |
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Keywords |
방오성능; 콘크리트; 내구성; 소수성; 자가세척 Antifouling; Concrete; Durability; Hydrophobic; Self-cleaning |
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Abstract |
Marine and hydraulic structures are subject to durability damage not only due to the penetration of sea water but also due to the attachment of marine organisms. Therefore, in this study, we tried to develop an antifouling coating agent with self-cleaning function for marine concrete. It was confirmed that the antifouling coating agent mixed with AKD, cellulose nanofibers and BADGE had sufficient antifouling performance at a well hydrophobicity of around 140° in contact angle and an inclination angle of 15°. In the abrasion resistance test of the surface, only a maximum loss of 0.015 g occurred. In the durability test, as a result of the chloride ion permeation test, almost no chloride ion permeation occurred in the variable where the coating agent was applied, and carbonation and freeze-thaw damage also rarely occurred, so it was analyzed that it was effective in securing durability of concrete.
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