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http://dx.doi.org/10.12989/cac.2011.8.3.357

Modeling of concrete containing steel fibers: toughness and mechanical properties  

Cagatay, Lsmail H. (University of Cukurova, Civil Engineering Department)
Dincer, Riza (University of Cukurova, Vocational School of Adana)
Publication Information
Computers and Concrete / v.8, no.3, 2011 , pp. 357-369 More about this Journal
Abstract
In this study, effect of steel fibers on toughness and some mechanical properties of concrete were investigated. Hooked-end steel fibers were used in concrete samples with three volume fractions (${\nu}_f$) of 0.5%, 0.75% and 1% and for two aspect ratios (l/d) of 45 and 65. Compressive and flexural tensile strength and modulus of elasticity of concrete were determined for cylindrical, cubic and prismatic samples at the age of 7 and 28 days. The stress-strain curves of standard cylindrical specimens were studied to determine the effect of steel fibers on toughness of steel-fiber-reinforced concrete (SFRC). In addition, the relationship between compressive strength and the flexural tensile strength of SFRC were reported. Finally, a simple model was proposed to generate the stress-strain curves for SFRC based on strains corresponding to the peak compressive strength and 60% of peak compressive stress. The proposed model was shown to provide results in good correlation with the experimental results.
Keywords
fiber reinforcement; toughness; mechanical properties; compressive strength; flexural strength;
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