Prediction of shear behavior of steel fiber-reinforced rubberized concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars

Hosseini, Seyed Ataollah; Nematzadeh, Mahdi; Chastre, Carlos

doi:10.1016/j.compstruct.2020.113010

Cited by 39 publications

(7 citation statements)

References 26 publications

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“…2 h0 is the effective height of the cross-section. 3 fc', ft and Ec are the axial co pressive strength, tensile strength and elasticity modulus, respectively.…”

Section: Experimental Programmentioning

confidence: 99%

“…Nevertheless, external prestressed steel bars are exposed to the service environment and thus suffer from corrosion. To overcome this shortcoming, fiber-reinforced polymer (FRP) bars, composed of carbon, basalt or glass fibers, have been developed and proffered as an alternative to conventional steel bars [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…The number represents the FRP bar amount; "L" and "H" represent prestress levels of 60 MPa and 100 MPa, respectively. 2 h 0 is the effective height of the cross-section 3. f c ', f t and E c are the axial compressive strength, tensile strength and elasticity modulus, respectively.…”

mentioning

confidence: 99%

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Flexural Performance and Stress Calculation of External Prestressed Fiber-Reinforced Polymer-Bar-Strengthened One-Way Concrete Slabs

Fang,

Gao,

Ding

et al. 2024

Materials

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External prestressing is widely employed in structural strengthening engineering due to its numerous advantages. However, external prestressed steel bars are prone to corrosion when exposed to the service environment. This paper is dedicated to examining the use of fiber-reinforced polymer (FRP) bars as external prestressing materials to strengthen one-way concrete slabs. Five one-way concrete slabs were strengthened with externally prestressed FRP bars with different prestress levels and different amounts of FRP bars, while one non-strengthened slab was used for comparison. The effects of strengthening on the flexural behavior, specifically the cracking load, ultimate load, stiffness and failure mode, were analyzed systematically. Moreover, the ductility and cost–benefit optimizing properties of the reinforcing design were discussed. The results show that external prestressed FRP bars significantly improve the cracking load, ultimate load and stiffness of one-way concrete slabs. The absence of a bond between the concrete and FRP bars overcomes the brittleness of the FRP bars, while the strengthened slabs exhibit satisfactory ductility and a higher post-yield stiffness and bearing capacity. Additionally, the cost/benefit ratio is optimized by increasing the prestress level, while a higher number of prestressed FRP bars is beneficial to ductility. Finally, a method for calculating the stress in prestressed FRP bars at ultimate loads was proposed. Irrespective of the prestressing material, this method is applicable to both strengthened beams and one-way slabs.

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“…2 h0 is the effective height of the cross-section. 3 fc', ft and Ec are the axial co pressive strength, tensile strength and elasticity modulus, respectively.…”

Section: Experimental Programmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexural Performance and Stress Calculation of External Prestressed Fiber-Reinforced Polymer-Bar-Strengthened One-Way Concrete Slabs

Fang,

Gao,

Ding

et al. 2024

Materials

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“…Hosseini et al studied the shear properties of concrete reinforced with rubber aggregates, glass-fiber-reinforced polymers, and steel fibers [29]. They looked into the shear properties in addition to the failure modes of a specimen with different reinforcement contents.…”

Section: Introductionmentioning

confidence: 99%

Recycling Unrecycled Plastic and Composite Wastes as Concrete Reinforcement

et al. 2023

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The land disposal of waste material is a major environmental threat, and recycling efforts must be exponentially improved to mitigate it. In this paper, a feasibility study was conducted to reinforce concrete with waste materials that are not typically recycled. Compression testing was performed to evaluate the mechanical properties of the concrete specimens. The results were compared with a conventional wire mesh reinforcement used in concrete. Alternative reinforcements that are typically disposed of in landfill were used, namely, plastic regrind, carbon fiber scraps, tempered glass, coarse aggregates, and wire mesh. For each reinforcement type, four specimens were manufactured to evaluate the consistency of the results. Cylindrical specimens with ASME standard dimensions of 10.16 cm × 20.32 cm were tested using a Tinius-Olsen compression testing machine after seven days of curing. A constant strain rate of 0.25 MPa/s was applied until a load drop of 30% was detected. The results show that, while the recycled reinforcements had lower compressive strengths than the wire mesh, they maintained a load-carrying capacity of more than 80%. A major improvement was observed in terms of the ductility and toughness of the reinforced concretes. The recycled-carbon-fiber-reinforced specimens showed 12% strain at failure, a major improvement in concrete ductility. The findings of this research indicate that such recycled particles and fibers without any post-processing can be used in the reinforcement of concrete, with a significant improvement in ductility.

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“…Recently, many reports have been published on predicting chemical reactions using various methods [15][16][17][18][19][20][21][22][23][24][25][26]. Even in polymer science, efforts to predict polymer properties are still being explored, as published in various reports on computational approaches [27][28][29][30][31][32][33][34][35][36][37][38][39][40][41][42]. However, computational approaches do not easily predict and explain polymer synthesis because defining the representative chemical potential for polymers in DFT is difficult, with a high degree of freedom and computational complexity involving many atoms.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Computational Approaches to Sulfonated Poly(arylene ether sulfone) Synthesis Using Different Halogen Atoms at the Reactive Site

et al. 2022

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Engineering thermoplastics, such as poly(arylene ether sulfone), are more often synthesized using F-containing monomers rather than Cl-containing monomers because the F atom is considered more electronegative than Cl, leading to a better condensation polymerization reaction. In this study, the reaction’s spontaneity improved when Cl atoms were used compared to the case using F atoms. Specifically, sulfonated poly(arylene ether sulfone) was synthesized by reacting 4,4′-dihydroxybiphenyl with two types of biphenyl sulfone monomers containing Cl and F atoms. No significant difference was observed in the structural, elemental, and chemical properties of the two copolymers based on nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, transmission electron microscopy, and electrochemical impedance spectroscopy. However, the solution viscosity and mechanical strength of the copolymer synthesized with the Cl-terminal monomers were slightly higher than those of the copolymer synthesized with the F-terminal monomers due to higher reaction spontaneity. The first-principle study was employed to elucidate the underlying mechanisms of these reactions.

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Prediction of shear behavior of steel fiber-reinforced rubberized concrete beams reinforced with glass fiber-reinforced polymer (GFRP) bars

Cited by 39 publications

References 26 publications

Flexural Performance and Stress Calculation of External Prestressed Fiber-Reinforced Polymer-Bar-Strengthened One-Way Concrete Slabs

Flexural Performance and Stress Calculation of External Prestressed Fiber-Reinforced Polymer-Bar-Strengthened One-Way Concrete Slabs

Recycling Unrecycled Plastic and Composite Wastes as Concrete Reinforcement

Experimental and Computational Approaches to Sulfonated Poly(arylene ether sulfone) Synthesis Using Different Halogen Atoms at the Reactive Site

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