Ultimate shear response of ultra-high-performance steel fibre-reinforced concrete elements

Ţibea, Ciprian Ioan; Bompa, D.V.

doi:10.1007/s43452-020-00051-z

Cited by 28 publications

(12 citation statements)

References 41 publications

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“…From the analysis of the fracture surface, it was observed that the fibers are evenly distributed and orthogonal to the fracture. It is possible to conclude that the steel fibers contributed to the flexural strength of the specimens because the behavior of SFRM is similar to that observed on similar materials with the same amount of fiber volume [19]. In addition, the fracture plane spread to the top of the specimen offering residual flexural strength.…”

Section: Sfrm Residual Flexural Tensile Testsupporting

confidence: 51%

“…5.) with the proportions reported in Table 4 [19]. The steel hooked-end fibers have a length Ls=30 mm, nominal thickness ts=0.55 mm and the mechanical properties reported in Table 5.…”

Section: Sfrm Experimental Characterizationmentioning

confidence: 99%

“…In fact, the use of these materials has been generally studied as a construction material for the design of new structural elements [16,17] and the experimental and numerical research has focused on the evaluation of its mechanical properties (uniaxial tensile strength and tensile fracture properties [18], etc. ), the behavior of new high performance reinforced concrete elements [19], the ultimate shear behavior of hybrid RC beam and steel columns [20], or its use on building applications such as non-structural elements, for instance.…”

Section: Introductionmentioning

confidence: 99%

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Bond behavior of steel fiber-reinforced mortar (SFRM) applied onto masonry substrate

Zampieri

Simoncello

Libreros

et al. 2020

Archiv.Civ.Mech.Eng

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Masonry was the most used material during the last centuries to build constructions. Most of the existing masonry structures (buildings, bridges etc.) were built without considering some important structural considerations that are important nowadays. Moreover, due to factors such as the increasing of service loads, materials aging, structural damage, etc., existing masonry structures require strengthening interventions. The definition of optimal strengthening strategies using traditional and innovative materials is still an important issue of the scientific research. In fact, during the last decade, many researchers focused their attention studying innovative composites materials, such as fiber-reinforced polymers (FRP) and fiber-reinforced cementitious matrix (FRCM) composites, for the strengthening of existing masonry structures. This research has focused on aspects such as the bond behavior between the substrate and the composite materials, the structural behavior of the strengthened masonry and concrete structures, and the compatibility and reversibility of these materials when bonded to existing substrates. In this study, the bond behavior of a composite material known as steel fiberreinforced mortar (SFRM), recently used as for the strengthening of existing structures, applied onto masonry structures is analyzed experimentally and numerically. First, the material is characterized experimentally with the aim of getting insight on its behavior and applicability when applied as an innovative technique for the strengthening of masonry and to obtain mechanical parameters required for the numerical models. Mechanical properties of the SFRM studied included flexural and compressive strength, tensile strength, and residual flexural strength. The SFRM bond behavior on masonry substrates was evaluated by means of double shear lap tests. In addition, the experimental tensile and bond behavior of the SFRM is studied numerically through finite element models validated using the results obtained during the experimental tests. Results show that if an adequate bonded length is provided, the SFRM can fully develop its tensile strength as detachment from the substrate is not observed.

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Section: Sfrm Residual Flexural Tensile Testsupporting

confidence: 51%

“…5.) with the proportions reported in Table 4 [19]. The steel hooked-end fibers have a length Ls=30 mm, nominal thickness ts=0.55 mm and the mechanical properties reported in Table 5.…”

Section: Sfrm Experimental Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bond behavior of steel fiber-reinforced mortar (SFRM) applied onto masonry substrate

Zampieri

Simoncello

Libreros

et al. 2020

Archiv.Civ.Mech.Eng

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show abstract

“…The flexural strength of a fibre-reinforced mortar is highly dependent on the embedment length and the aspect ratio of the fibre [62]. This would also be the case for an RPVC fibre/granule -mortar matrix.…”

Section: Constitutive Modellingmentioning

confidence: 97%

Constitutive modelling and mechanical properties of cementitious composites incorporating recycled vinyl banner plastics

Bompa

Elghazouli

2021

Construction and Building Materials

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“…Few studies have reported on the seismic behaviour of reinforced concrete elements with SFRC. Tibea et al [13] examined the experimental performance of ultra-high-performance steel fibre reinforced concrete (UHPSFRC) beams. The test results showed that higher fibre content resulted in an increase in the ultimate capacity and some enhancement in terms of the ductility.…”

Section: Introductionmentioning

confidence: 99%

Seismic behaviour of cross-shaped steel fibre reinforced concrete columns

Sun

Wei

et al. 2020

Archiv.Civ.Mech.Eng

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This paper proposes a novel cross-shaped column in which steel fibre reinforced concrete (SFRC) is integrated with a highstrength stirrup to enhance its seismic behaviour. An experimental investigation was conducted on eight cross-shaped column specimens subjected to cyclic lateral loading. All of the specimens were evaluated in terms of their cracking patterns, failure modes, hysteresis behaviour, deformation and ductility, strength and stiffness degradation, and energy dissipation performance. The effects of the stirrup strength, stirrup spacing, steel fibre content, and axial load ratio were investigated. The experimental results demonstrated that all of the specimens exhibited flexural failure. The cracked concrete of the specimens with steel fibres could be prevented from spalling. The hysteresis loops of all of the specimens were relatively full without a readily observable pinching phenomenon and the specimens possessed a satisfactory energy dissipation capacity. Compared with the normal specimens, the specimens with high-strength stirrups, close stirrup spacing, and steel fibre exhibited a higher energy dissipation capacity, lateral bearing capacity, displacement ductility, and initial stiffness. However, the ductility rapidly decreased as the axial load ratio increased. Additionally, neither the incorporation of steel fibre nor the reduction of the stirrup spacing or the axial load ratio substantially mitigated the stiffness degradation. Based on the test results, calculation models were proposed for calculating the seismic bending moment capacities of the specimens. The calculated values were in accordance with the test results.

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Ultimate shear response of ultra-high-performance steel fibre-reinforced concrete elements

Cited by 28 publications

References 41 publications

Bond behavior of steel fiber-reinforced mortar (SFRM) applied onto masonry substrate

Bond behavior of steel fiber-reinforced mortar (SFRM) applied onto masonry substrate

Constitutive modelling and mechanical properties of cementitious composites incorporating recycled vinyl banner plastics

Seismic behaviour of cross-shaped steel fibre reinforced concrete columns

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