An experimental study on the post-cracking behaviour of Hybrid Industrial/Recycled Steel Fibre-Reinforced Concrete

Martinelli, Enzo; Caggiano, António; Xargay, Hernán

doi:10.1016/j.conbuildmat.2015.07.007

Cited by 126 publications

(90 citation statements)

References 27 publications

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“…For a low dosage (<0.5% by volume) of steel fibers added in concrete, many studies have suggested that fiber addition has an insignificant effect on the compressive strength of concrete. Existing design guidelines (e.g., RILEM TC 162‐TDF and Model Code 2010) mainly focus on the tensile properties of SFRC, as in most applications (e.g., pavements and tunnel linings), the material is subjected to bending.…”

Section: Introductionmentioning

confidence: 99%

Postcracking tensile behavior of blended steel fiber‐reinforced concrete

Wang

Figueiredo

et al. 2018

Structural Concrete

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Fiber blends have the potential to improve the mechanical and sustainability credentials of steel fiber‐reinforced concrete (SFRC), but at which ratios these can work is not known a priori. This paper investigates the uniaxial tensile stress–strain ( σ − ε) relationship of blended SFRC using manufactured steel fibers on their own, or blended with sorted steel fibers recycled from end‐of‐life tires (recycled tire steel fiber [RTSF]), at total fiber dosages of 30, 35, and 45 kg/m3. The accuracy of two σ − ε relations proposed by RILEM TC 162‐TDF and Model Code 2010 is assessed using the experimental results from concrete prisms. By using nonlinear finite element (FE) analysis, it is found that the RILEM approach can lead to significant overestimation (up to 72%) of peak flexural load and energy absorption capacity (up to 39%), while the Model Code 2010 can provide a rather accurate prediction of the energy absorption capacity and some overestimation (less than 34%) of the peak flexural load. Inverse FE analysis is used to determine indirectly the uniaxial tensile σ − ε relations of the examined SFRC mixes, and a simplified trilinear relation for SFRC is proposed. It is concluded that the tensile strength of SFRC with RTSF at a low total fiber dosage is only marginally improved by fiber addition, and the postcracking tensile strengths at different strains can be determined directly from residual flexural tensile strengths (f Ri) of prisms.

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Section: Introductionmentioning

confidence: 99%

Postcracking tensile behavior of blended steel fiber‐reinforced concrete

Wang

Figueiredo

et al. 2018

Structural Concrete

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“…In this context, authors like Quadir et al [8], Martinelli et al [12], Sengul [13], and Graeff et al [14] used recycled steel particles and steel fibres from End of Life Tyres (ELTs) with the aim of mechanically reinforcing mortars and concrete. Quadir et al [8] partially replaced fine aggregates with recycled steel particles in concrete.…”

Section: Introductionmentioning

confidence: 99%

“…As the main result, flexural resistance of concrete reinforced with steel particles was 38% higher than that of a conventional concrete. Additionally, Martinelli et al [12] studied concrete samples reinforced with two different types of fibres, commercial and recycled steel fibres, in different contents. In this research, they observed that the test samples with higher percentages of recycled fibres presented lower mechanical resistance.…”

Section: Introductionmentioning

confidence: 99%

“…[9], carbon fibres [10], synthetic fibres (e.g., polypropylene, polyethylene, polyvinyl alcohol, etc.) [11], and metallic fibres ( [12][13][14][15][16][17]) are amongst the most used fibre-shaped reinforcements. Nevertheless, over the last few years, the high cost of the commercial fibres has promoted the use of recycled metallic waste [10,18] to develop new cement-based materials that are more resilient [12], environmentally friendly [13], and with advanced properties [18].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Metallic Waste Addition on the Physical and Mechanical Properties of Cement-Based Mortars

et al. 2018

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Featured Application: The development of advance construction materials based on waste valorisation is a reality. The cement-based mortar with recycled metallic waste presented in this study could be potentially used as a building material with crack self-monitoring properties.Abstract: This paper investigates the influence of the type and amount of recycled metallic waste on the physical and mechanical properties of cement-based mortars. The physical and mechanical properties of cement mortars, containing four different amounts of metallic waste (ranged 4 to 16% by cement weight), were evaluated by measuring the bulk density, total porosity, flexural and compressive resistance, and dynamic elastic modulus by ultrasonic tests. All the properties were measured on test specimens under two curing ages: 7 and 28 days. Additionally, the morphological properties and elemental composition of the cement and metallic waste were evaluated by using Scanning Electron Microscopy (SEM), energy dispersive X-ray spectroscopy (EDXS), and X-ray fluorescence (XRF). Main results showed that the addition of metallic waste reduced the bulk density and increased the porosity of the cement-based mortars. Furthermore, it was observed that flexural and compressive strength proportionally increased with the metallic waste addition. Likewise, it was proven that elastic modulus, obtained by compressive and ultrasonic tests, increases with the metallic waste amount. Finally, based on a probability analysis, it was confirmed that the addition of metallic waste did not present a significant effect on the mechanical performance of the cement-based mortars.

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“…Martinelli et al investigated mechanical properties of fiber reinforced concrete containing both virgin (or industrial) and recycled steel fiber (RSF) recovered from waste end-of-life tires [46]. Different contents of industrial and recycled steel fiber (RSF) used to reinforce the plain concrete.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigations on the flexural performance of geopolymers reinforced with short hybrid polymeric fibres

Kheradmand

Mastali

Abdollahnejad

et al. 2017

Composites Part B: Engineering

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a b s t r a c tGeopolymers have much higher drying shrinkage than Portland cement based composites Shrinkage performance is an important property for reinforced concrete composites just because a high shrinkage performance is associated to cracking tendency that leads to future durability problems. This paper provides results experimental and numerical investigations of fly ash based geopolymeric mortars reinforced with short hybrid polymeric fibres (SHPF). The results show that SHPF improved the flexural performance, while reducing the compressive strength and flexural stiffness of geopolymeric mortars. The addition of 0.8% SHPF increased about two times the fracture energy and about 50% the tensile strength. The adopted constitutive model well-captured the flexural performance of the tested beams.

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An experimental study on the post-cracking behaviour of Hybrid Industrial/Recycled Steel Fibre-Reinforced Concrete

Cited by 126 publications

References 27 publications

Postcracking tensile behavior of blended steel fiber‐reinforced concrete

Postcracking tensile behavior of blended steel fiber‐reinforced concrete

Effect of Metallic Waste Addition on the Physical and Mechanical Properties of Cement-Based Mortars

Experimental and numerical investigations on the flexural performance of geopolymers reinforced with short hybrid polymeric fibres

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