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Computers and Concrete Volume 8, Number 3, June 2011 , pages 357-369 DOI: https://doi.org/10.12989/cac.2011.8.3.357 |
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Modeling of concrete containing steel fibers: toughness and mechanical properties |
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Ismail H. Cagatay and Riza Dincer
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| 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 (vf) 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. | ||
| Key Words | ||
| fiber reinforcement, toughness, mechanical properties, compressive strength, flexural strength. | ||
| Address | ||
| Ismail H. Cagatay: University of Cukurova, Civil Engineering Department, Adana, Turkey Riza Dincer: University of Cukurova, Vocational School of Adana, Adana, Turkey | ||