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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.2
- 발행연도
- 2018.2
- 수록면
- 227 - 236 (10page)
이용수
초록· 키워드
오류제보하기
Nuclear power plants are constructed very close to the marine environments for cooling water and the structures are more susceptible to chloride induced corrosion. Cracking in RC structures in mass concrete is unavoidable when they are exposed to chloride contaminated chemical environments. This study is focused on the evaluation of crack and time effect on chloride diffusion rate. Two types of concrete strength grade were taken for nuclear power plant construction and the crack was induced with varying from 0.05 to 1.35 mm of width. The tests for chloride diffusion coefficients from steady-state condition were performed. The influence of crack width on the chloride transmission behavior was discussed and analyzed over an exposure period to one year. The diffusion coefficients due to growing crack width increase in crack width but they decrease with increasing curing period, which yields 57.8–61.6% reduction at the age of 180 days and 21.5–26.6% of reduction at 365 days. Through the parameters of age and crack width which are obtained from regression analysis, the evaluation technique which can consider the effect of crack and time on diffusion is proposed for nuclear power plant concrete.
목차
Abstract
1. Introduction
2. Outline of Test for Chloride Diffusion with Cracks
3. Evaluation of Time and Crack Effect on Diffusion
4. Conclusions
References
참고문헌 (30)
참고문헌 신청
ACI 304.3R-96. (1996). Heavyweight concrete: Measuring, mixing, transporting, and placing. ACI Committee Report, pp. 1?8.
ACI 211.1-91. (2009). Standard practice for selecting proportions for normal, heavyweight, and mass concrete. ACI Committee Report, pp. 1?7.
Andrade, C. (1993). Calculation of chloride diffusion coefficients in concrete from ionic migration measurement. Cement and Concrete Research, 23, 724?742.
Back, C. H., Tae, S. H., Roh, S. J., Lee, J. H., & Shin, S. W. (2011). A study on the requisite elements of LCCO2 evaluation system at planning stage of building. Korean Journal of Construction Engineering and Management, 12(3), 31?41.
Broomfield, J. P. (1997). Corrosion of steel in concrete: understanding, investigation and repair (pp. 1?15). London: E&FN.
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UCI(KEPA) : I410-ECN-0101-2018-532-001807867