Title

STRESS-STRAIN CURVES FOR STEEL FIBER- REINFORCED CONCRETE IN COMPRESSION

STRESS-STRAIN CURVES FOR STEEL FIBER- REINFORCED CONCRETE IN COMPRESSION

Authorship

Júnior, Luiz Álvaro de Oliveira; Borges, Vanessa Elizabeth dos Santos; Danin, Alice Ribeiro; Machado, Daiane Vitória Ramos; Araújo, Daniel de Lima; Debs, Mounir Khalil El; Rodrigues, Paulo Fernando

Júnior, Luiz Álvaro de Oliveira

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Borges, Vanessa Elizabeth dos Santos

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Danin, Alice Ribeiro

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Machado, Daiane Vitória Ramos

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Araújo, Daniel de Lima

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Debs, Mounir Khalil El

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Rodrigues, Paulo Fernando

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DOI

10.5151/2594-5327-34637

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Abstract

This paper presents a study on the compressive behavior of steel fiber-reinforced concrete. In this study, an analytical model for stress-strain curve for steel fiber- reinforced concrete is derived for concretes with strengths of 40 MPa and 60 MPa at the age of 28 days. Those concretes were reinforced with steel fibers with hooked ends 35 mm long and with aspect ratio of 65. The analytical model was compared with some experimental stress-strain curves and with some models reported in technical literature. Also, the accuracy of the proposed stress-strain curve was evaluated by comparison of the area under stress-strain curve. The results showed good agreement between analytical and experimental data and the benefits of the using of fibers in the compressive behavior of concrete.

This paper presents a study on the compressive behavior of steel fiber-reinforced concrete. In this study, an analytical model for stress-strain curve for steel fiber- reinforced concrete is derived for concretes with strengths of 40 MPa and 60 MPa at the age of 28 days. Those concretes were reinforced with steel fibers with hooked ends 35 mm long and with aspect ratio of 65. The analytical model was compared with some experimental stress-strain curves and with some models reported in technical literature. Also, the accuracy of the proposed stress-strain curve was evaluated by comparison of the area under stress-strain curve. The results showed good agreement between analytical and experimental data and the benefits of the using of fibers in the compressive behavior of concrete.

Keywords

steel fiber-reinforced concrete, stress-strain curves, compressive behavior.

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