FraMCoS 7 2010 Jeju, South Korea

Evaluation of shear carried by steel fibers in reinforced concrete beams with steel fibers

Reinforced concrete with steel fiber (RSF) beam is superior to ordinary RC beams in shear strength and ductility because of high energy absorption at fracture. On the other hand, the shear strength of RSF beams with stirrups has not been…

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Year 2010
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Abstract

Reinforced concrete with steel fiber (RSF) beam is superior to ordinary RC beams in shear strength and ductility because of high energy absorption at fracture. On the other hand, the shear strength of RSF beams with stirrups has not been clarified yet. The objective of this study is to explain the shear strength of RSF beams with stirrups. The tension softening diagram, which is one of the fracture parameters, seems to be effective to explain the shear resistance mechanism of RSF beams as well as the increment of shear by mix- ing steel fibers in concrete. The crack width of the diagonal crack has been measured through the image analy- sis, and the shear carried by steel fiber was calculated based on the tension softening curve.