Shear strength of steel fiber-reinforced concrete beams

Autores

  • Daniel de Lima Araújo Universidade Federal de Goiás Autor
  • Fernanda Gabrielle Tibúrcio Nunes Universidade Federal de Goiás Autor
  • Romildo Dias Toledo Filho Universidade Federal do Rio de Janeiro Autor
  • Moacir Alexandre Souza de Andrade Furnas Centrais Elétrica Autor

DOI:

https://doi.org/10.4025/actascitechnol.v36i3.19005

Palavras-chave:

empirical models, cracking, transverse reinforcement reduction

Resumo

This study analyzed the mechanical behavior of shear strength of steel fiber-reinforced concrete beams. Six beams subjected to shear loading were tested until failure. Additionally, prisms were tested to evaluate fiber contribution to the concrete shear strength. Steel fibers were straight, hook-ended,35 mmlong and aspect ratio equal to 65. Volumetric fractions used were 1.0 and 2.0%. The results demonstrated a great contribution from steel fibers to shear strength of reinforced concrete beams and to reduce crack width, which can reduce the amount of stirrups in reinforced concrete structures. Beam capacity was also evaluated by empirical equations, and it was found that these equations provided a high variability, while some of them have not properly predicted the ultimate shear strength of the steel fiber-reinforced concrete beams.

 

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Biografia do Autor

  • Daniel de Lima Araújo, Universidade Federal de Goiás
    He received his MS and PhD in civil engineering from the University of São Paulo, Brazil, in 1997 and 2002, respectively
  • Fernanda Gabrielle Tibúrcio Nunes, Universidade Federal de Goiás
    She received her MS in Civil Engineering from the Federal University of Goiás, Brazil, in 2007
  • Romildo Dias Toledo Filho, Universidade Federal do Rio de Janeiro
    He received his MS and PhD in civil engineering from the Pontifical Catholic University of Rio de Janeiro, Brazil, in 1986 and 1997, respectively.

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Publicado

2014-02-26

Edição

Seção

Engenharia Civil

Como Citar

Shear strength of steel fiber-reinforced concrete beams. (2014). Acta Scientiarum. Technology, 36(3), 389-397. https://doi.org/10.4025/actascitechnol.v36i3.19005

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