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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 Comparative Flexural Performance of Concrete Panels Reinforced with Ring-Type Steel Fibers and with Hooked-End Straight Steel Fibers
Authors 이차돈 ; 조원택
Page pp.169-178
ISSN 1226-6205
Keywords 링 형태 강섬유 ; 콘크리트 ; 실험 ; 인성지수 ; 방향계수 ; 패널 Ring-type Steel Fibers ; Concrete ; Experiments ; Toughness Indices ; Orientation Factor ; Panel
Abstract Ring-type steel fibers (RSFs) of the closed circular shape, have different resistance mechanisms other than straight steel fibers. RSFs also maintain the same value of the orientation factor for the plane enclosed by the fiber ring perimeter. In this research, comparative studies were performed for the panels reinforced with RSFs and with straight steel fibers of 15kgm3 and 30kgm3, respectively. Resisting mechanisms of RSFs were identified and higher toughness indices were experimentally observed for the concrete panels reinforced with RSFs than with straight steel fibers. Orientation factor for the RSF was suggested. It was found that RSFs were more effective in increasing toughness for the panel specimens with relatively thinner thickness than beam specimens.