해안해양 콘크리트구조물의 철근부식시점에 대한 탄산화 영향 평가

Title
해안해양 콘크리트구조물의 철근부식시점에 대한 탄산화 영향 평가
Alternative Title
EVALUATION OF CARBONATION-INDUCED CORROSION INITIATION FOR COASTAL CONCRETE STRUCTURE
Author(s)
한상훈; 박우선
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2009-04-01
Abstract
In the long-term performance of concrete structure, the corrosion of steel bars is the major cause decreasing the durability of concrete structure and carbonation is one of principal factors initiating corrosion. So this paper investigates the effect of carbonation on the soundness of coastal concrete structure and quantifies the influence of carbonation based on in-situ data tested at 369 points in 69 harbor facilities. The relationships between carbonation depth and cover depth are studied and the failure probability of durability, that is the initiation probability of steel corrosion, is appraised on the basis of reliability concept. The in-situ test results showed that the ratio of carbonation depth to cover depth was less than 0.2, and the carbonation depth increased with age. In most cases, the probability of corrosion initiation by carbonation was less than 10%. As a result, the influence of carbonation on the durability of harbor concrete structure is smaller than other factors deteriorating the durability of harbor concrete structure.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29586
Bibliographic Citation
NUCPERF 2009, pp.313 - 320, 2009
Publisher
RILEM
Type
Conference
Language
English
Publisher
RILEM
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

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