Stress-Strain Behavior of Steel Fiber-Reinforced Concrete in Compression

Bencardino, Francesco; Rizzuti, Lidia; Spadea, Giuseppe; Swamy, R.N.

doi:10.1061/(asce)0899-1561(2008)20:3(255)

Cited by 205 publications

(69 citation statements)

References 11 publications

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“…Lok and Xiao, 1999;Rilem Technical Committees, 2000Tlemat et al, 2006) suggests that the compressive behaviour of SFRC can be conveniently assumed to be similar to that of plain concrete. Investigations carried out by Bencardino et al (2008) support this conclusion as the observed results show that the addition of steel fibres does not significantly affect the compressive strength of concrete (with potential improved ultimate strain safely ignored). Therefore, in the present work, the steel fibres are considered to have no effect on the compressive behaviour of plain concrete.…”

Section: Compressive Behavioursupporting

confidence: 63%

Shear behaviour of steel-fibre-reinforced concrete simply supported beams

Abbas

Mohsin

Cotsovos

et al. 2014

Proceedings of the Institution of Civil Engineers - Structures

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The structural behaviour of steel-fibre-reinforced concrete beams was studied using non-linear finite-element analysis and existing experimental data. The work aim was to examine the potential of using steel fibres to reduce the amount of conventional transverse steel reinforcement without compromising ductility and strength requirements set out in design codes. To achieve this, the spacing between shear links was increased while steel fibres were added as a substitute. Parametric studies were subsequently carried out and comparisons were also made with BS EN 1992-1-1 predictions. It was concluded that the addition of steel fibres enhanced the load-carrying capacity and also altered the failure mode from a brittle shear mode to a flexural ductile one. The provision of fibres also improved ductility.However, interestingly it was found that adding excessive amounts of fibres led to a less-ductile response. Overall, the study confirmed the potential for fibres to compensate for a reduction in conventional shear reinforcement.energy absorption of the control specimen M rd bending moment capacity P lateral monotonic load P BMC load calculated based on bending moment capacity P max load-carrying capacity P max,EXP load-carrying capacity based on experimental data P max,DES load-carrying capacity based on current design guidelines P max,FEA load-carrying capacity based on finite-element analysis P max,0 load-carrying capacity of the control specimen P sc load calculated based on shear capacity P u ultimate load P y load at yield P y,0 load at yield of the control specimen SI stirrup spacing increased V f volume fraction of the fibres V rd shear capacity ä y deflection at yield ä u ultimate deflection ì ductility ratio ì, 0 ductility ratio of the control specimen

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Section: Compressive Behavioursupporting

confidence: 63%

Shear behaviour of steel-fibre-reinforced concrete simply supported beams

Abbas

Mohsin

Cotsovos

et al. 2014

Proceedings of the Institution of Civil Engineers - Structures

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“…This is apparent in Figure 18 where softening appears soon after the conventional reinforcement yields. In general, experimental studies on fibre reinforced cementitious composites show a considerable variability in the behaviour and this is largely attributed to a poor control of the fibre distribution which results in uneven orientations of fibres in different specimens [11,46]. Significant effort has been directed towards engineering the mix and casting processes for such composites in order to obtain uniform distributions and orientations of fibres [50][51][52].…”

Section: Test Casementioning

confidence: 99%

“…A number of macroscopic models have been proposed for simulating the compressive behaviour of FRCs; Bencardino et al [11] provides a review of four empirical models for the stressstrain behaviour of steel fibre-reinforced concrete in compression [12][13][14][15] and compares their performance against several sets of experimental data. The study concludes that each of the models studied agrees well with the experimental data from which the model relations were derived but that the models do not show the same level of agreement when compared with other experimental data.…”

Section: Introductionmentioning

confidence: 99%

A plastic-damage constitutive model for the finite element analysis of fibre reinforced concrete

Mihai

Jefferson

Lyons

2016

Engineering Fracture Mechanics

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A unique constitutive model for fibre reinforced concrete (FRC) is presented, which combines a number of mechanics-based sub models for the simulation of directional cracking, rough crack contact and the crack-bridging action of fibres. The model also contains a plasticity component to simulate compressive behaviour. The plasticity component employs a frictional hardening/softening function which considers the variation of compressive strength and strain at peak stress with fibre content. Numerical results from a range of single-point and finite element simulations of experimental tests show that the model captures the characteristic behaviour of conventional fibre reinforced concrete with good accuracy.

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“…Furthermore, the bond strength can exist because of the presence and the combination action of bond components such as physical and chemical adhesion between fibers and matrix, the mechanical component of bond (type of fiber such as hooked-end, crimped, or straight), and fiber-to-fiber interlock (Naaman and Najm 1991). The mechanical behavior of SFRC is also influenced by the characteristic of each component, synergistic interaction, and mix proportion in the mixture (Bencardino et al 2008). Moreover, the other important characteristics of steel fiber are shape of steel fiber, length of steel fiber, diameter of steel fiber, aspect ratio of steel fiber, and fiber volume fraction (Bencardino et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Compressive Stress-Strain Relationship of High Strength Steel Fiber Reinforced Concrete

Liao

Perceka

Liu

2015

ACT

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Many stress-strain models of high strength steel fiber reinforced concrete (SFRC) were proposed to account for major characteristics of SFRC; however, the presence of bond strength between steel fibers and matrix was not considered in most studies. In this study, the bond strength is considered in the proposed stress-strain model. The empirical expressions for determining the proposed stress-strain model are obtained by regressing 61 of stress-strain curves of SFRC. The compression tests on SFRC specimens are also conducted to verify the proposed stress-strain model. In addition, the comparison study between pullout energy obtained from fiber pullout tests and that obtained by using empirical equation are presented, since the bond strength is an important parameter to describe fiber characteristics. By treating steel fibers as confinements, the mechanical properties of SFRC are expressed in terms of reinforcing index, equivalent bond strength, and ultimate compressive stress. The proposed stress-strain model has good agreements with the experimental stress-strain curves obtained either in this study or by other researchers. Furthermore, by considering the bond strength between fibers and matrix and treating steel fibers as confinements, the post-peak behavior of SFRC can be well described and avoid either overestimating or underestimating the post-peak behavior.

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Stress-Strain Behavior of Steel Fiber-Reinforced Concrete in Compression

Cited by 205 publications

References 11 publications

Shear behaviour of steel-fibre-reinforced concrete simply supported beams

Shear behaviour of steel-fibre-reinforced concrete simply supported beams

A plastic-damage constitutive model for the finite element analysis of fibre reinforced concrete

Compressive Stress-Strain Relationship of High Strength Steel Fiber Reinforced Concrete

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