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Journal of the Korea Concrete Institute

J Korea Inst. Struct. Maint. Insp.
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  • Korea Citation Index (KCI)

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Title Appraisal Study on Tensile Test Method of Mechanical Properties of FRP Composite Used in Strengthening RC Members
Authors 유영찬 ; 최기선 ; 강인석 ; 김긍환
Page pp.73-80
ISSN 1226-6205
Keywords FRP 복합체 ; 가력속도 ; 매수 ; 인장특성치 ; 시험방법 ; 시험편 폭 ; FRP composite ; Loading rate ; Ply ; Tensile property ; Test method
Abstract Experimental study has been performed in order to construct the standard test methods and appraisal criteria by investigating the influence of specimen types(property, width, layers) and loading rate on the tensile characteristics of FRP used in strengthening RC structures. The FRP composite tested in this study are the unidirectional CFRP sheet/strip and the bidirectional GFRP sheet. Test variables consist of the various width ranging from 10mm to 25mm and number of CFRP sheets plied up to 5 layers. Test results indicated that maximum tensile strength and minimum coefficient of variation are recorded at each different width according to the fiber types and weaving directions. Also, the average tensile strengths of CFRP sheets are decreased as the number of layer of CFRP sheet are increased.