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Flexural Behaviors of Reinforced Concrete Beams Strengthened with Fiber-Steel Composite Plates  

Cho, Baik-Soon (경성대학교 건설환경공학부)
Kim, Seong-Do (인제대학교 건설기술연구소 토목공학과)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.21, no.5, 2008 , pp. 483-491 More about this Journal
Abstract
The effectiveness of a new fiber-steel composite plate designed specifically to be used for strengthening of reinforced concrete members has been investigated. Twelve reinforced concrete beams were tested. Seven of the beams were strengthened with carbon fiber-steel composite plate(CSP), four of the beams were strengthened with glass fiber-steel composite plate(GSP), and one beam was used as a control specimen. The experimental results showed that new strengthening system controls the premature debonding and provides a more ductile failure mode than other conventional strengthening systems. The observed ductility ratios were $3.01\sim3.81$ and $3.55\sim4.95$ for strengthened beam with CSP and GSP, respectively. The maximum load was increased by 115% and 107% for strengthened beam with CSP and GSP, respectively, comparing with control beam. In addition, experimental and analytical results were well agreed.
Keywords
strengthened RC beam; CSP; GSP; flexural behavior;
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