Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Effect of Organic Admixture(Calcium Lignosulfonate) on the Early Hydration Process of Portland Cement(III)

시멘트 초기수화과정에 대한 유기혼화제의 영향(III)

  • 문정연 (한양대학교 무기재료공학과) ;
  • 최상홀 (한양대학교 무기재료공학과)
  • Published : 1985.01.01
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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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References

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