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http://dx.doi.org/10.11112/jksmi.2015.19.1.139

Strength Development of Sulfur-Polymer-Based Concrete Surface Protecting Agents Depending on Curing Condition and Hazard Assessment of Sulfur Polymers  

Lee, Byung-Jae ((주)제이엔티아이엔씨 기술연구소)
Lee, Eue-Sung (충남대학교 토목공학과)
Kim, Seung-Gu (충남대학교 토목공학과)
Kim, Yun-Yong (충남대학교 토목공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.19, no.1, 2015 , pp. 139-146 More about this Journal
Abstract
The amount of by-product from sulphur increases in domestic industrial facilities. However, the amount of its consumption is limited so that the amount of unused sulphur continues to increase. Therefore, in this study, the use sulfur polymer as the concrete surface protecting material was conducted. The compressive strength showed that as the substitution ratio of filler increased up to 40%, the compressive strength also increased. A high compressive strength was shown at the curing temperature of $40^{\circ}C$ (SS, FA) and $60^{\circ}C$ (OPC) according to the type of filler. The difference of compressive strength between air dry curing and water curing was insignificant so that there was no significant influence of moisture during curing process. The evaluation result of bond strength showed that the highest bond strength was shown at the air-dry condition of $40^{\circ}C$ regardless of type of filler. Bonding didn't occur properly during water curing in comparison to air dry curing. Also, in case of the specimen cured at $60^{\circ}C$, discoloration and hair cracks appeared due to the influence of temperature, and the highest bond strength was shown at the substitution ratio of 20% (SS, FA) and 30% (OPC) according to the type of filler. The releasing test result of harmful substance showed that no harmful substance was released, so there is no harmfulness in the surface protecting material using sulfur polymer. As a conclusion drawn in this study, it is most appropriate to substitute silica by approximately 20%, mix and cure at the air-dry condition of $40^{\circ}C$ in order to use sulfur polymer as the surface protecting material.
Keywords
Sulfur polymer; Concrete surface protecting agent; Strength; Hazard assessment; Curing condition;
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Times Cited By KSCI : 5  (Citation Analysis)
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