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Title |
Durability and Bioassay of a Sulfur Polymer Surface Protecting Agent for Concrete Structures
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Authors |
석병윤(Byoung-Yoon Seok) ; 이병재(Byung-Jae Lee) ; 김윤용(Yun-Yong Kim) |
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DOI |
http://dx.doi.org/10.11112/jksmi.2015.19.6.029 |
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Keywords |
유황폴리머 ; 콘크리트 구조물 ; 내구성 ; 표면보호재 ; 생물독성 Sulfur polymer ; Concrete structures ; Durability ; Surface protecting agent ; Bioassay |
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Abstract |
In this study, to examine the use of sulfur polymer as a coating agent for concrete, durability and hazard evaluations were performed. The result of the evaluation indicated that the chemical resistance of the coating agent for concrete was outstanding against acidic, base, and alkaline solutions. The evaluation of the bond strength after an accelerated weathering test depending on the mixing condition indicated that the most outstanding strength characteristic was obtained when silica powder and fly ash were mixed at the same time. The bond strength exceeded 1 MPa in every mixing condition even after the repeated hot and cold treatment of the coating agent specimen for concrete, and the SFS mix proportion showed the highest bond strength. The examination of the accelerated carbonation and chloride ion penetration resistance of the concrete coated with the coating agent indicated that the specimen coated with the coating agent using silica powder as a filler showed the most outstanding durability. When a fish toxicity test was performed to examine the hazard of the use of the functional polymer as a coating agent for concrete, the functional polymer was found to have no effect on the organisms. When the chemical resistance, freezing and thawing resistance, carbonation, and chloride ion penetration resistance of the coating agent were considered, substituting silica powder and fly ash as the fillers of the functional polymer by 20%, respectively, was the optimal level in the range of this study.
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