전기저항 및 전류밀도 측정법에 의한 철근 부식률 예측

다국어 초록 (Multilingual Abstract)

The purpose of this study is to identify corrosion mechanism and develop qualitative measurement method of corrosion level Fist of all, structural behavior of each different level of corrosion states have been evaluated And mathematical models that can predict corrosion level in terms of electric potential, corrosion intensity, and Ohmic resistance are proposed<br/>
Corrosion rate in reinforcing bar was investigated in this study using accelerated corrosion method due to electric potential differences based on Faradays law Total 288 measurement spots were designed in terms of corrosion rates, diameter of reinforcing bars, and concrete cover thickness corrosion current densities, corrosion potentials, and ohmic resistances of concrete were measured on these specimens using Gecor device<br/>
This study suggested the relationship between corrosion levels, measured electrical resistance and measured electric current density as follows<br/>
y = 0.17x₁²-3.57x₁+ 18.81 (R²=0.89)<br/>
y = -0.64x₂²+ 17.63x₂- 2.58 (R²=0.86)<br/>
where x₁is electric current density, x₂is electric resistance, and y is corrosion level.

목차 (Table of Contents)

• Abstract
  
• 1. 서론
  
• 2. 실험
  
• 3. 실험결과
  
• 4. 실험결과의 분석 및 고찰
  
• 5. 결론
  
• 감사의 글
  
• 참고문헌

참고문헌 (Reference)

1 조승호, "콘크리트 내부 철근 부식의 비파괴 측정방법에 관한 연구" 18 (18): 19-26, 2002.8

2 이종득, "철근부식진단" 도서출판 일광 1996

3 조승호, "철근 부식에 따른 철근콘크리트 부재의 부식량 측정기법에 관한 연구" 20 (20): 225-228, 2000.10

4 小林豊治, "鐵筋腐食にかかわる耐久性の診斷手法" 26 (26): 37-39, July1988

5 CEB Bulletin No243, "Strategies for Testing and Assessment of Concrete" 1998.5

6 "Standard Test Method for Half Cell Potentials of Reinforcing Steel in Concrete" ASTM C 876 1980.

7 J. W, "Development of Inspection Techniques for Reinforced Concrete" 1985.