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Journal of the Korean Ceramic Society 1984;21(2): 143. |
시멘트 초기 수화과정에 대한 유기혼화제의 영향(I) |
문정연, 최상홀1 |
한양대학교 무기재료공학과 1쌍용중앙연구소 |
Effect of Organic Admixture(Calcium Lignosulfonate) (I) on the Early Hydration Process of Protland Cement |
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ABSTRACT |
In this study we mainly dealt with the effects of organic retarder(calcium lignosulfate) on the early hydration process of clinker minerals. From a consideration of the hydration process of tricalcium silicate $(C_3S)$ tricalcium silicate $(C_3S)$-tricalcium aluminate $(C_3A)$ tricalcium silicate $(C_3S)$-tetracalcium aluminof-errite $(C_4AF)$ systems with calcium lignosulfate the following results were obtained. 1. when 0.25wt% of CLS was added to $C_3S$ the hydration process was progressed normally but adding of 0.5wt% its hydration was greatly retarded. 2. The hydration of $C_3S$-$C_3A$ system was progressed normally up to 0.5wt% but by adding gypsum its hydration was retarded slightly. 3. The hydration of $C_3S$-$C_4AF$ system was greatly retarded even with 0.25wt% of CLS but by adding gypsum its hydration process was recovered normally. |
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