Modeling of concrete containing steel fibers: toughness and mechanical properties


ÇAĞATAY İ. H. , DİNÇER R.

COMPUTERS AND CONCRETE, cilt.8, ss.357-369, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 8 Konu: 3
  • Basım Tarihi: 2011
  • Doi Numarası: 10.12989/cac.2011.8.3.357
  • Dergi Adı: COMPUTERS AND CONCRETE
  • Sayfa Sayıları: ss.357-369

Özet

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 (v(f)) of 0.5%, 0.75% and 1% and for two aspect ratios (1/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.