Estimation on the Sulfate Ion Diffusivity in Concrete by Accelerated Test

촉진시험에 의한 콘크리트중의 황산이온 확산계수 추정

  • 문한영 (한양대학교 공과대학 토목공학과) ;
  • 김성수 (대진대학교 이공대학 토목공학과) ;
  • 김홍삼 (한양대학교 대학원 토목공학과 박사과정 수료) ;
  • 이승태 (한양대학교 대학원 토목공학과) ;
  • 최두선 (한양대학교 대학원 토목공학과)
  • Published : 2000.10.01

Abstract

When concrete structures are exposed to sulfate or marin environments, sulfate ions penetrated into concrete make it deteriorate. An accelerated test under potential difference method was performed to evaluate not only the sulfate ion diffusivity in ordinary portland cement and ground granulated blast-furnace slag cement concretes but the effect of slag replacement and water-cement ratio on the sulfate ions diffusivity. As the result of this study, we assumed the sulfate ion diffusivity was significantly related with total passed charge and initial current in concrete. Moreover sulfate ions penetration resistance of ordinary portland cement concrete was superior to that of ground granulated blast-furnace slag cement concrete.

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