Diffusion of Ion in Hardened Cement Paste Containing Slag-Siliceous Powder (I) Diffusion of Cl- Ion

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J. Korean Ceram. Soc. > Volume 24(3); 1987 > Article

Journal of the Korean Ceramic Society 1987;24(3): 282.

슬래그-규산질 미분말을 함유하는 시멘트 경화체중에서의 이온의 확산 (I) Cl-이온의 확산

민경소, 김태현, 최상흘, 한기성¹

한양대학교 무기재료공학과
¹인하대학교 무기재료공학과

Diffusion of Ion in Hardened Cement Paste Containing Slag-Siliceous Powder (I) Diffusion of Cl- Ion

ABSTRACT

ment paste with slag and siliceous powder such as silica fume and white carbon was investigated. The addition of admixtures reduces the content of Ca(OH)2, which is the main cause of pore formation by corrosive action of sea-water. The addition of admixtures makes the hardened cement paste dense, thereby restricting the diffusion of Cl- ion and improving the resistance to sea-water. Apparence diffusion coefficient of Cl- ion in hardened ordinary portland cement paste was 3.7${times}$10-8$textrm{cm}^2$/sec, while that for the hardened cement paste with the admixture was 1.2∼3.2${times}$10-8$textrm{cm}^2$/sec.