Journal ArticleDOI
Stress-strain curves for steel-fiber reinforced concrete under compression
TLDR
In this article, an attempt has been made to generate the complete stress-strain curve experimentally for steel-fiber reinforced concrete for compressive strength ranging from 30 to 50 MPa.Abstract:
Steel-fiber reinforced concrete is increasingly being used day by day as a structural material. The complete stress–strain curve of the material in compression is needed for the analysis and design of structures. In this experimental investigation, an attempt has been made to generate the complete stress–strain curve experimentally for steel-fiber reinforced concrete for compressive strength ranging from 30 to 50 MPa. Round crimped fibers with three volume fractions of 0.5%, 0.75% and 1.0% (39, 59, and 78 kg/m3) and for two aspect ratios of 55 and 82 are considered. The effect of fiber addition to concrete on some of the major parameters namely peak stress, strain at peak stress, the toughness of concrete and the nature of the stress–strain curve is studied. A simple analytical model is proposed to generate both the ascending and descending portions of the stress–strain curve. There exists a good correlation between the experimental results and those calculated based on the analytical model. Equations are also proposed to quantify the effect of fiber on compressive strength, strain at peak stress and the toughness of concrete in terms of fiber reinforcing parameter.read more
Citations
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Journal ArticleDOI
High-performance fiber-reinforced concrete: a review
TL;DR: In this article, the authors present a comprehensive review of the mechanism of crack formation and propagation, compressive strength, modulus of elasticity, stress-strain behavior, tensile strength (TS), flexural strength, drying shrinkage, creep, electrical resistance, and chloride migration resistance of high performance fiber reinforced concrete.
Journal ArticleDOI
Compressive behavior of fiber reinforced high-performance concrete subjected to elevated temperatures
TL;DR: In this article, the effects of elevated temperatures on the compressive strength stress-strain relationship (stiffness) and energy absorption capacities (toughness) of concretes are presented.
Journal ArticleDOI
The relation between fiber orientation and tensile behavior in an Ultra High Performance Fiber Reinforced Cementitious Composites (UHPFRCC)
Su-Tae Kang,Jin-Keun Kim +1 more
TL;DR: In this article, the effect of the fiber orientation distribution on the tensile behavior of UHPFRCC was investigated in two stages; precracking and post-cracking tensile behaviors.
Journal ArticleDOI
Some characteristics of high strength fiber reinforced lightweight aggregate concrete
Obada Kayali,M.N. Haque,B. Zhu +2 more
TL;DR: The effect of polypropylene and steel fibers on high strength lightweight aggregate concrete is investigated in this paper, where Sintered fly ash aggregates were used in the lightweight concrete; the fines were partially replaced by fly ash.
Journal ArticleDOI
Mechanical properties of hybrid fiber reinforced lightweight aggregate concrete made with natural pumice
TL;DR: In this article, the authors used hybrid steel and polypropylene fibers to improve the ductility of pumice lightweight aggregate concrete by incorporating hybrid steel-polypropylene fiber reinforcement system.
References
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Journal ArticleDOI
A numerical approach to the complete stress-strain curve of concrete
TL;DR: In this article, the authors present the experimental justification of two previously published formulas, Eqs. 2 and 6, for the estimation of the complete stress-strain diagram of concrete.
Book
Fiber-Reinforced Cement Composites
TL;DR: In this article, the basic concepts of mechanical properties of fibers - tension, bending constitutive materials mixture proportions - mixing and casting procedures properties of freshly mixed FRC properties of hardened FRC compression, tension and flexure FRC under impact and fatigue loading creep, shrinkage and long-term performance of FRC plastic drying shrinkage fiber-reinforced shotcrete glass fiber reinforced cement (GFRF) thin sheet products slurry infiltrated fiber concrete (SIFCON).
Journal ArticleDOI
Equation for the stress-strain curve of concrete
Prakash Desayi,S. Krishnan +1 more