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http://dx.doi.org/10.11112/jksmi.2016.20.2.010

Evaluation of Load Capacity Reduction in RC Beam with Corroded FRP Hybrid Bar and Steel  

Oh, Kyung-Suk (한남대학교 건설시스템 공학과)
Moon, Jin-Man (한남대학교 건설시스템 공학과)
Park, Ki-Tae (한국건설기술연구원)
Kwon, Seung-Jun (한남대학교 건설시스템 공학과)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.20, no.2, 2016 , pp. 10-17 More about this Journal
Abstract
Steel corrosion is a very significant problem both to durability and structural safety since reinforcement has to support loads in tensile region in RC(Reinforced Concrete) member. In the paper, newly invented FRP Hybrid Bar and normal steel are embedded in RC beam member, and ICM (Impressed Current Method) is adopted for corrosion acceleration. Utilizing the previous theory of Faraday's Law, corrosion amount is calculated and flexural tests are performed for RC beam with FRP Hybrid Bar and steel, respectively. Corrosion amount level of 4.9~7.8% is measured in normal RC member and the related reduction of flexural capacity is measured to be -25.4~-50.8%, however there are no significant reduction of flexural capacity and corrosion initiation in RC samples with FRP Hybrid Bar due to high resistance of epoxy-coated steel to corrosion initiation. In the accelerated corrosion test, excellent performance of anti-corrosion and bonding with concrete are evaluated but durability evaluation through long-term submerged test is required for actual utilization.
Keywords
Durability; Steel corrosion; Steel; FRP Hybrid Bar; Flexural capacity;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
연도 인용수 순위
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