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Failure Mode and Design Guideline for Reinforced Concrete Slab Strengthened Using Carbon FRP Grid
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 Title & Authors
Failure Mode and Design Guideline for Reinforced Concrete Slab Strengthened Using Carbon FRP Grid
Park Sang-Yeol; Xian Cui;
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This paper presents the failure mode and strengthening design of reinforced concrete slab strengthened with Carbon Fiber Reinforced Polymer(CFRP) grid. Parameters involved in this experimental study are FRP grid reinforcement quantity, repair mortar thickness, the presence of anchor, and strengthening in compression. In this study, there are different failure types with increasing the CFRP grid strengthening reinforcement. On the low strengthening level, CFRP grid in repair mortar cover ruptures. On the moderate strengthening level, there is a debonding shear failure in the interface of carbon FRP grid because of the excessive shear deformation. On the high strengthening level, diagonal shear failure occurs. With the increasing of FRP grid reinforcement, the strengthening effect increased, but the ductility decreased. By limiting the strengthening level, it can be achieved to prevent shear failure which result in sudden loss in the resisting load capacity. CFRP rupture failure is desirable, because CFRP ruptured concrete slab keeps the same load capacity and ductility haying before strengthening even after failure. Finally, design guideline and procedure are given for strengthening of concrete slab with CFRP grid.
strengthening;carbon FRP grid;slab;ductility;anchor;
 Cited by
MS Asia, '콘크리트 구조물의 보수-보강, New FiberGrid-NEFMAC 공법', Ms-Asia, 2002, pp.3-24

Yoon, S J., Shigeyama, M,Jeong, S. K., and Jung, J.H., 'Retrofitting Mefhod of Concrete Structures withFRP Grids, FRP Composites in Civil Engineering,' Vol-II, CICE2001, 2001,ELSEVIER pp.1101-1108

심낙훈 외, '탄소섬유 그리드를 이용한 RC 보의 보강효과에 관한 연구', 한국구조물진단학회지, 6권 4호,2002. pp.107-118

안동준 외, '탄소섬유그리드를 사용한 콘크리트 구조물의 보수보강', 한국터널협회, 1호, 2000, pp.13-22

윤순종 외, '탄소섬유그리드를 이용한 콘크리트 구조물의 보수보강공법 연구', 홍익대학교 과학기술연구소, 연구보고서, 1999

조병완 외, '격자형탄소섬유로 보강된 R/C 보의 보강효과,' 콘크리트학회논문집, 15권 3호, 2003, pp.377-385

한국콘크리트학회, '건설교통부 제정-콘크리트구조설계기준', 한국콘크리트학회, 2003

한양대학교, MS-Asia, 'NEFMAC 보강공법을 적용한콘크리트 교량 바닥판의 동적시험에 의한 성능향상 효과 분석' 연구보고서, MS-Asia, 2001