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http://dx.doi.org/10.4334/JKCI.2006.18.3.361

Prediction of Flexural Capacities of Steel-Fiber Reinforced Concrete Beams  

Kim, Woo-Suk (Kumoh National Institute of Technology)
Kwak, Yoon-Keun (Kumoh National Institute of Technology)
Kim, Ju-Bum (Clarkson University)
Publication Information
Journal of the Korea Concrete Institute / v.18, no.3, 2006 , pp. 361-370 More about this Journal
Abstract
The results of previous tests by many researchers have been compiled to evaluate the flexural strength of steel-fiber reinforced concrete beams. Existing prediction equations for flexural strength of such beams were examined, and a new equation based on mechanical and empirical observations, was proposed. In other words, the constitutive models for steel fiber reinforced concrete(SFRC) were proposed, which incorporate compressive and tensile strength. A steel model might also exhibit stain-hardening characteristics. Predictions based on the model are compared with the experimental data. For the collection of tests, a variation of the Henager equations, modified to apply to fiber-reinforced concrete beams, provided reliable estimates of flexural strength. The proposed equations accounted for the influence of fiber-volume fraction, fiber aspect ratio, concrete compressive strength and flexural steel reinforcement ratio. The proposed equations gave a good estimation for 129 flexural specimens evaluated.
Keywords
steel-fiber reinforced concrete; strain-hardening;
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