콘크리트학회논문집 (Journal of the Korea Concrete Institute)

  • 제11권3호
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  • Pages.193-203
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  • 1999
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  • 1229-5515(pISSN)
  • /
  • 2234-2842(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
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콘크리트 내부염소이온에 의한 철근의 부식특성 및 임계 염소이온농도의 결정 연구

Corrosion Characteristics of Steel Reinforcements Induced by Internal Chlorides in Concrete and Determination of Chloride Thresholds

  • 오병환 (서울대학교 토목공학과) ;
  • 장승엽 (서울대학교 토목공학과) ;
  • 신용석 (서울대학교 토목공학과 연구원)
  • 발행 : 1999.06.01
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초록

The corrosion of steel reinforcements in concrete is of great concern in recent years. This study is focused on the corrosion behavior of steel bars induced by internal chlorides in concrete at early ages. The main objective of this study is to determine the chloride thresholds causing depassivation and active corrosion of steel reinforcement in concrete. To examine the threshold concentration of chloride ion, the half-cell potential, chemical composition of expressed pore solutions of concrete and the rate of corosion area of the specimens were measured. Major variables include the added amount of chlorides in concrete, types of binders, and water-to-binder ration. From the present comprehensive experimental results, the factors influencing chloride-induced corrosion are investigated, and the chloride thresholds causing active corrosion of steel bars are proposed. The present study will enable to specify the realistic chloride limit in concrete which can be used in the future technical specification.

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참고문헌

  1. Rilem report 12 Performance Criteria for Cincrete Durability Kdroff, K.;Hisdorf, H. K.
  2. Report of the Technical Committee 60-CSC Corrosion of Steel in Concrete Sciessel, P.
  3. Materials Protection v.6 no.11 Steel Corrosion in Concrete : How Dose It Occur Hausmann, D. A.
  4. British Corrosion Journal v.5 Corrosion & Corrersion in bition of Reinforcing Steel : 1- Immersion in Alkaline Solution Gouda, V. K.
  5. ACI Materials Journal v.84 no.4 Chloride Corrosion Threshold in Concrte Hope, B. B.;Ip, A. K. C.
  6. Materials and Structures v.24 Investigations of Reinforcement Corrosion 2. electrochemical Monitoring of Steel in Choride-Contaminated Concrete Lambert, P.;Page, C. L.
  7. ACI Materials Journal Chloride Threshold for Corrosion of Reinforcement in Concrete Hussain, S. E.;Al-Gahtani, A. S.;Rasheeduzzafar
  8. Cement and Concrete Research v.26 no.4 Chloride Thresholds in Marine Concrete Thomas, M.
  9. Publication No. P-96:6, Division of Building Materials Chloride Transport in Concrte- Maesurement and Prediction Tang, L.
  10. ACI Materials Journal v.89 no.1 Effect of Tricalcium Aluminate Content of Reinforcing Steel in Concrete Rasheeduzzafar, Hussain, S. E.;Al-Saadoun, S. S.
  11. Materials and Structures v.24 Investigations of Reinforcement Corrosion 1. The Pore Electrode Phase in Chloride Contaminated Concrete Page, C. L.;Lambert, P.;Vassie, P. R. W.
  12. Cement and Concrete Research v.11 no.2 Expression and Analysis of Pore Fluids From Hardened Pastes and Moortars Barneyback, R. S.;Diamond, S.
  13. ASTM C 876-87, Annual Book of ASTM Standards v.03.02 Standard Test Methof for Half-cell Potencrete of Uncoated Reinforcing Steel in Soncrete