An Experimental Study on the Penetration of Chloride Ions to Concrete Subjected to Wetting and Drying Conditions

건습반복을 받는 콘크리트의 염소이온 침투에 관한 실험적 연구

  • 김은겸 (서울산업대학교 토목공학과) ;
  • 최영규 (서울산업대학교 토목공학과) ;
  • 김승진 (한국건자재시험연구원)
  • Published : 2004.05.01

Abstract

This paper presents the experimental results on the penetration of chloride. ions to ordinary portland cement concrete which is subjected to 2 different artificial environments; consecutive digestion, wetting at $3\%$ NaCl for 1 day and then drying at $40^{\circ}C$ oven for 4 days. The water-cement ratio was $35\%,\;45\%,\;55\%$. Test results showed that the intrusion depth and concentration of chloride ions penetrated into concrete in repeated wetting-drying environments were respectively deeper and higher than those of consecutive digestion environment. The penetration of chloride ions deeply depend on the effect of water to cement ratio.

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