The work of Aoude, Cook, and Mitchell (2009) reports a studying which "a series of 13 full-scale axial compression tests was conducted on reinforced concrete (RC) and steel fiber-reinforced concrete (SFRC) columns." (p.1) Results of the study are stated to indicate that "the addition of steel fibers can partially substitute for the confinement reinforcement in columns, thereby improving constructability while achieving significant confinement." (p.1) The work of Klemens (2004) entitled: "New Fibers Add Flexibility: Precast Concrete is an Ideal Use for the Product" states that the idea for steel fiber reinforcement for concrete emerged through research at the University of Michigan more than a decade ago. The resulting product, which greatly increases the effectiveness of steel fibers, is just now becoming commercially available." (p.1) It is related in this study that a screw type shape is used to reinforce the steel and that this serves to increase the bonding strength of the concrete." (Klemens, 2004, p.1) Klemens additionally states that this steel additive was originally developed for the purpose of enabling concrete to "...behave more like steel in blast- and earthquake-resistant structures, these steel fibers are likely to be added in concrete where added strength, flexibility, and fewer cracks are desired. And because less material is required and the fibers are small and flexible, the have good mixability and do not form clumps. They also lie flat in the finished concrete and finish as smooth as untreated concrete." (Klemens, 2004, p.1)
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