Proceedings of the Korea Concrete Institute Conference (한국콘크리트학회:학술대회논문집)

Korea Concrete Institute (한국콘크리트학회)
권호 표지

Evaluation of Apparent Chloride Diffusivity of Types of Concretes

콘크리트 종류별 겉보기 염소이온 확산특성 평가

  • 문한영 (한양대학교 공과대학 토목공학과) ;
  • 김홍삼 (한양대학교 산업과학연구소) ;
  • 최두선 (한양대학교 대학원 토목공학과) ;
  • 이승훈 (삼성물산 건설부문 기술연구소) ;
  • 손유신 (삼성물산 건설부문 기술연구소)
  • Published : 2003.11.01
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Abstract

This paper investigated the apparent chloride diffusivity of various concretes. Ten mixtures of concrete were initially prepared and tested to estimate diffusion property. The penetration depth and concentration of chloride ion were examined at the same water-binder ration. The binders were composed of normal portland cement, fly ash, ground granulated blast-furnace slag, and silica fume. From the results, it was concluded that using the mineral admixtures had a filling effect on the pore structure of cements matrix due to those pozzoanic reaction with the hydrates of cement, which increases the tortuosity of pore and makes large pore finer. And diffusivity of chloride is following: NPC100 > F10N90 > F30N70 > F20N80 > F20S05 > G30N70 > F10S05 > G30S05 > G30F15 > G50N50.

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