Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Temporal Correlation of Long-term Exposure Test and Accelerated Corrosion Test of Rebar

장기폭로 시험과 철근 부식 촉진시험의 시간적 상관성에 관한 연구

  • Lee, Min-Woo (Department of Civil Engineering, Sang Myung University) ;
  • Park, Sang-Soon (Department of Civil Engineering, Sang Myung University)
  • 이민우 (상명대학교 건설시스템공학과) ;
  • 박상순 (상명대학교 건설시스템공학과)
  • Received : 2014.11.21
  • Accepted : 2014.12.18
  • Published : 2014.12.30
Download PDF
⟨ Previous Next ⟩

Abstract

Recent interest in the increased structural performance and durability evaluation of this concrete structure in a salt damage environment is increasing. The most secure and reliable method of accelerated corrosion test is a method to carry out the rebar corrosion monitoring can be exposed directly to the marine test site exposure. However, long-term exposure testinghas the disadvantage that a long period is necessary. So, a lot of research on RC of salt damage environment have beenpromoted as alternatives to replace this. However, accelerated corrosion test, in the short term only is appropriate and is but an accelerated test method to evaluate the critical chlorine concentration, there is a difficult problem that you still get the answer. It is one of the correlation problems accelerated test correspond to a certain period of exposure environment. Therefore, in this study, to clarify the differences rebar corrosion beginning, through the actual corrosion accelerated test in corrosion time and laboratory test chamber of the structure of the marine environment results in both environments, it is an object of correlation coefficient derived.

부식촉진시험의 가장 확실하고 신뢰성이 높은 방법은 해양폭로 시험장에 직접 폭로시켜 철근부식모니터링을 실시하는 방법이지만 장기간이 소요되는 단점이 있다. 그래서 이를 대체하는 수단으로 많은 연구들이 진행되어 왔다. 하지만 부식촉진시험이 폭로환경의 어느 정도 기간에 상응하느냐는 상관성에 대한 규정은 정해져 있지 않은 상황이다. 본 논문에서는 간만대, 침지내 환경을 재현한 철근부식촉진시험과 장기폭로시험을 실시하였다. 환경조건을 변수로 시험을 실시하였으며, 반전지전위법을 통한 철근부식 모니터링을 실시하였다. 부식촉진 시험결과 시험조건 별 상대부식개시시점 도출을 할 수 있었으며, 내구성 해석 프로그램인 Life365와 염화물적정시험을 통해 염화물침투해석을 실시하였다.

Keywords

References

  1. ASTM C 876-91 (1999). Standard Test Method for Half-cell Potentials of Uncoated Reinforcing Steel in Concrete.
  2. ASTM G 109 (2007). Standard test method for determining the effects of chemical admixtures on corrosion of embedded steel reinforcement in concrete exposed to chloride environments.
  3. Choi, J.N. (2009). "Study on Durability Life Evaluation of Concrete Bridges that Have Been Exposed to Seawater" M.S. Hankyung University, Korea.
  4. JCI SC3 (1991). "The accelerated corrosion test for reinforcing steel in concrete".
  5. Jo, Y.K. and So, S.Y. (2004). "A Study on the Evaluation of the Water-soluble Chloride Content and Free-chloride Content in Blast Furnace Slag Cement Pastes" KCI, 4(4). https://doi.org/10.5345/JKIC.2004.4.4.095
  6. Jung, J.W. (2013). "A Study of Accelerated Corrosion Test and Chloride Penetration Analysis with Artificial Seawater Immersion Condition" M.S. Sangmyung University, Korea.
  7. Kim, M.W. (2014). "A Study on the Accelerated Corrosion test and Chloride Penetration Analysis for Each Concrete Mixture Based on the Wetting and Drying Condition of Artificial Seawater" M. S. Sangmyung University, Korea.
  8. KS F 2584 (2010). "Accelerated Carbonation Test Method of Concrete" Korean Industrial Standards.
  9. KS F 2599-2 (2008). "Standard test method for the accelerated corrosion of reinforced concrete (wet-drying cycles method)" Korean Industrial Standards.
  10. KS F 2713 (2012). "Analysis Test Methods Chloride of Concrete and Concrete Material" Korean Industrial Standards.
  11. Oh, B.H. and Jang, S.Y., Shin, Y.S. (1999). "Corrosion Characteristics of Steel Reinforcements Induced by Internal Chlorides in Concrete and Determination of Chloride Thresholds" KCI, 11(3).
  12. Park, S.S. and Jung, J.W. (2014). "A Study of Accelerated Corrosion Test and Chloride Penetration Analysis with Artificial Seawater Immersion Condition" KCI, 18(1). https://doi.org/10.11112/jksmi.2014.18.1.093
  13. Park, S.S. and Kim, M.W. (2014) "Evaluate the Concrete mix by Type Accelerated Corrosion Test and Chloride Penetration Analysis with Artificial Seawater Cyclic Wet and Dry Condition." JRCR, 1(3).