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Flexural Capacity Evaluation of Reinforced Concrete Members with Corroded Steel Expansion and Debonding Area at the Interface Steel to Concrete Surface  

Jung, Woo-Young (강릉대학교토목공학과)
Beak, Sang-Hoon (동호 ENG 구조부)
Yeon, Jong-Ho (POS-AC 기술연구소)
Publication Information
Journal of the Korean Society of Hazard Mitigation / v.8, no.5, 2008 , pp. 7-13 More about this Journal
Abstract
This paper presents experimental and analysis studies about both the corroded steel expansion and the variation of poor bonding range between steel and concrete. A loss of overall bonding capacity at the concrete-steel interface is evaluated experimentally and crack patterns at the bottom of the concrete are presented here. Steel-concrete interface is covered by rubber due to present local loss of the concrete-steel interface bonding capacity. In case of crack analysis performed by commercial FEM programs. we investigated crack‘s pattern and location. Finally, it is concluded that overall flexural capacity of the reinforced concrete structure is increased by the corroded steel expansion and is dependent of the bonding range at the steel- concrete interface. These results give an important factor to decide a life of reinforced concrete structures.
Keywords
Choride; Reinforeced concrete; Bonding capacity; Rubber; Stiffness;
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