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Bond Behavior between Parent Concrete and Carbon Fiber Mesh
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 Title & Authors
Bond Behavior between Parent Concrete and Carbon Fiber Mesh
Yun, Hyun-Do; Sung, Soo-Yong; Oh, Jae-Hyuk; Seo, Soo-Yeon; Kim, Tae-Yong;
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The strengthening of concrete structures in situ with externally bonded carbon fiber is increasingly being used for repair and rehabilitation of existing structures. Because carbon fiber is attractive for this application due to its good tensile strength, resistances to corrosion, and low weight. Generally bond strength and behavior between concrete and carbon fiber mesh(CFM) is very important, because of enhancing bond of CFM. Therefore if bond strength is sufficient, it will be expect to enhance reinforcement effect. Unless sufficient, expect not to enhance reinforcement effect, because of occuring bond failure between concrete and CFM. In this study, the bond strength and load-displacement response of CFM to the concrete by the direct pull-out test(the tensile-shear test method) were investigated using the experiment and the finite element method analysis with ABAQUS. The key variables of the experiment are the location of clip, number of clips and thickness of cover mortar. The general results indicate that the clip anchorage technique for increasing bond strength with CFM appear to be effective to maintain the good post-failure behavior.
carbon fiber mesh(CFM);bond strength;bond failure;FE models;ABAQUS;
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