Hybrid short fiber reinforcement system in concrete: A review

Pakravan, Hamid Reza; Latifi, Masoud; Jamshidi, Masoud

doi:10.1016/j.conbuildmat.2017.03.059

Cited by 271 publications

(99 citation statements)

References 95 publications

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“…Hybrid fibers have been demonstrated very useful to improve the mechanical properties of cementitious composites and CaCO 3 whisker would further enhance this effect . Considering the performance of hybrid fiber reinforced cementitious composites (HFRCC), steel fibers with different sizes, steel‐polypropylene and steel‐PVA hybrid fibers are most widely used . For the past few years, numerical methods have been developed widely to calculate mechanical properties of structural members .…”

Section: Research Significancementioning

confidence: 99%

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Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Cao

Xie

et al. 2018

Structural Concrete

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Introduction of hybrid fiber and calcium carbonate (CaCO 3 ) whisker could improve the properties of cementitious composites. Nevertheless, little attention has been paid to influences of steel-polyvinyl alcohol (PVA) hybrid fiber and whisker on stress-strain behavior of hybrid fiber reinforced cementitious composites (HFRCC). In this research, 19 groups of mixtures have been used to explore this topic. The results present that CaCO 3 whisker can improve the compressive strength, peak strain and prepeak strain energy of steel-PVA HFRCC. Generally, HFRCCs reach better compressive behavior when the fibers size are grading. For example, 13 mm steel fiber+ 6 mm PVA fiber+ whisker and 35 mm steel fiber+ 12 mm PVA fiber+ whisker are better than 13 mm steel fiber+ 12 mm PVA fiber + whisker and 35 mm steel fiber+ 6 mm PVA fiber+ whisker. The results are employed to develop formulas for calculating the strength, deformation, and toughness of HFRCC. Two models were developed to evaluate the stress-strain response of HFRCC. The prediction results of prepeak stress-strain curves using Model 2 (piecewise function involves a cubic parabola and a rational fraction) are closer to the experimental curves and lower than those using Model 1 (continuous rational power function). Therefore, Model 2 is recommended if more accurate prediction of the prepeak stress-strain curve is required. Otherwise, the simpler Model 1 can be used.

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Section: Research Significancementioning

confidence: 99%

“…Considering the performance of HFRCC, steel‐polypropylene fibers, steel fibers with different sizes, and steel‐PVA fibers are most widely used in cementitious composites . The stress–strain behaviors have been studied on these HFRCC.…”

Section: Introductionmentioning

confidence: 99%

Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Cao

Xie

et al. 2018

Structural Concrete

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“…Fibers within the cement based materials prevent or control the cracks and improve the tensile strength, ductility, toughness, and durability of the concrete [6,7]. There are variable fibers including carbon, polyvinyl alcohol, steel, and glass fibers that may theoretically increase the strength as a result of high modulus whereas some low strength fibers such as polypropylene, nylon, and acrylic improve ductility and reduce cracking [8].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Polyolefin Fiber-Reinforced Light Weight Concrete

Sedaghatdoost

Amini

2017

cej

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The utilization of polyolefin fibers in reinforced concrete can potentially enhance the properties of the concrete by changing the interfacial properties of the fiber-matrix interface. The objective of this research was to determine the mechanical properties of polyolefin fiber reinforced lightweight concrete (LWC). Compressive, flexural, and splitting tensile strengths of the sample were measured. Polyolefin fibers were added to the reinforced composite in variable amounts (0-2%). The lightweight concrete was designed to achieve compressive strength target of at least 30 MPa with a density value of 1800 kg/m 3 after 28 days of storage. The results showed that the highest compressive strength was obtained in LWC containing 1% fiber led to an increase of about 8%. However, a reduction in compressive strength was observed when the amount of fiber was increased. Moreover, increasing the amount of fiber presented a growth in rupture modulus as well as splitting tensile strength.

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“…Various types of fibers are tested and are being used in the construction sector like carbon fiber, steel fiber, glass fiber, plastic fiber, and nylon fibers, etc. [6]. and EN 14889-2 [7], these standards classify the types of fibers which can be used in the concrete mixture.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Concrete under the Addition of High Volume of Polyolefin Macro Fiber and Fly Ash

Adhikary

Rudžionis

2018

Fibers

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This paper deals with behavior of concrete's compressive and bending strengths with the addition of high amount of polyolefin macro fibers. Polyolefin fiber is used to increase the bending strength and compressive strength, these experiments are done to investigate the cracking behavior and found the bending strength and compressive strength of polyolefin fiber reinforced concrete. Normally, concrete is mixed with various amount of fiber, but in this experiment five different specimens were prepared, S-1 is without fiber; S-2, homogeneous mixing of fiber volume of 10 kg/m 3 ; S-3, homogeneous mixing of fiber volume of 25 kg/m 3 ; S-4, homogeneous mixing of fiber volume of 35 kg/m 3 ; and S-5, which contains 25 kg/m 3 fiber mixed by hand in three different layers. A small amount of fly ash (18.18% of cement mass) is also mixed in the concrete specimens for better results. Concrete specimens were tested on 7th day and 28th day of the curing process. Water absorption capacity and compressive strength tests were done in the dry state and wet state to find the strength difference. More than 50% of flexural strength was gained on the 28th day of the destructive test. Post-cracking behavior was observed on the 28th day of the test, the specimens with fiber content were found to take load after cracking and hold more load to failure.

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Hybrid short fiber reinforcement system in concrete: A review

Cited by 271 publications

References 95 publications

Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Mechanical Properties of Polyolefin Fiber-Reinforced Light Weight Concrete

Behavior of Concrete under the Addition of High Volume of Polyolefin Macro Fiber and Fly Ash

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Hybrid short fiber reinforcement system in concrete: A review

Cited by 271 publications

References 95 publications

Effects of CaCO3 whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Effects of CaCO3 whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Mechanical Properties of Polyolefin Fiber-Reinforced Light Weight Concrete

Behavior of Concrete under the Addition of High Volume of Polyolefin Macro Fiber and Fly Ash

Contact Info

Product

Resources

About

Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites

Effects of CaCO₃ whisker, hybrid fiber content and size on uniaxial compressive behavior of cementitious composites