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Comparative Flexural Performance of Concrete Panels Reinforced with Ring-Type Steel Fibers and with Hooked-End Straight Steel Fibers  

Lee, Chadon (중앙대학교 건축공학부)
Cho, Won-Tack ((주)코펙엔지니어링)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.13, no.1, 2009 , pp. 169-178 More about this Journal
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 $15kg/m^3$ and $30kg/m^3$, 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.
Keywords
Ring-type Steel Fibers; Concrete; Experiments; Toughness Indices; Orientation Factor; Panel;
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  • Reference
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