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Journal of the Korean Ceramic Society 1985;22(1): 5. |
시멘트 초기수화과정에 대한 유기혼화제의 영향(III) |
문정연, 최상홀 |
한양대학교 무기재료공학과 |
Effect of Organic Admixture(Calcium Lignosulfonate) on the Early Hydration Process of Portland Cement(III) |
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ABSTRACT |
The effect of calcium lignosulfonate (CLS) on the early hydration characteristics for clinker minerals was investigated. In the presence of CLS and unsufficient gypsum The hydration of $C_3$A lowered CLS adsorption to form ettrin-gite and the residual CLS in the liquid phase accelerated the solubility of C4AF hydration. As the result unreacted $Fe^{3+}$ in the liquid phase would be precipitated gelatinously on $C_3$ hydrates and the hydration of $C_3$ could be retarded. But by addition of optimum gypsum into the cement with CLS the presence of $Fe^{3+}$ in the liquid phase were lowered and $C_3$ hydration would be normallized. |
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