Effect of Blending Materials on the Durability of Concrete (I) Diffusion of Cl-ions through Hardened Cement Paste

염분환경하 콘크리트 경화체의 내구성에 미치는 혼합재의 영향 (I) 시멘트 경화체중에서의 Cl-이온의 확산

  • 김남중 (한양대 공대, 현재 (주)유니온 근무) ;
  • 최상흘 (한양대 무기재료공학과) ;
  • 정재동 (동양중앙연구소 연구실장) ;
  • 한기성 (인하대 무기재료공학과)
  • Published : 1991.10.01

Abstract

Apparent diffusion coefficients of Cl-ions through hardened cement paste(HCP), which were partly substituted blending materials, were determined. Also, pore solution was extracted from HCP which were immersed in NaCl solution, and Cl- concentration of the solution were analyzed. Partly substitution of pozzolanic materials considerably reduced the diffusion rate for Cl-ions and Cl- concentration of pore solution. Binding capacity of Cl- is related to the content of Al2O3 and pozzolanic reactivity.

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