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탄소섬유그리드를 이용한 RC보의 보강효과에 관한 실험적 연구
이인희,심낙훈,김정재,박영석 명지대학교 산업기술연구소 2001 産業技術硏究所論文集 Vol.20 No.-
Reinforced concrete structures are damaged by material, environmental, and physical factors during service period. Also, when we designed, the stiffness of member should be increased because of unexpected overloads and decreased durability. So, recently, repair and strengthening are became a concern on reinforced concrete structure. On this study, damaged reinforced concrete member are reinforced using carbon fiber grid, new multi cumulated material. And effect of reinforcement is experimentally analyzed. First of all, material properties of carbon fiber grid, uncontracted polymer mortar, and rapidly hardening mortar are experimentally researched. And then, application is verified by shear test and attachment test with two kinds test specimen, respectively. Using five actual size RC beam (width 40cm, height 50cm, length 650cm), yield strength test and bending test are carried out. Finally, yielded five specimens are reinforced with each other methods and fracture strength test is carried out. That results are compared and analyzed to confirm the reinforcement effect.