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Title |
Development of Strengthening Method Using the Vacuum Impregnation in RC Members
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Keywords |
진공함침 ; 보강공법 ; 탄소섬유 ; 철근콘크리트 부재 Vacuum impregnation ; Strengthening method ; Carbon fiber ; RC members |
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Abstract |
Deterioration and weakening is advanced in compliance with flowing of time and the change of environment in RC structures. Consequently, strength and serviceability decreases, finally, the life of infrastructure shortens and safety characteristics decreases. Accordingly, in this study, a new method to develop a strengthening method using the vacuum impregnation, which increases durability of the infrastructure occurred the safety reduction due to the performance degradation and increases the life of infrastructure by improving the durability compared to the existing method, was planned. For flexural tests, the maximum strength was a low-end order from high order as follows: ① vacuum impregnation with 2 fold reinforcement, ② fiber sheet 2 fold reinforcement, ③ vacuum impregnation with 1 fold reinforcement, ④ fiber sheet 1 fold reinforcement, and ⑤ nothing. Also, for confirmation results about durability, when the fiber reinforcement is being exposed to the inferior environment, the remaining tensile strength exceeded of 90% or more for all environments. This is because the reinforcement used in this research shows the excellent resistance in severe environment.
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