Experimental and theoretical evaluation of punching strength of steel fiber reinforced concrete slabs

Nuno D. Gouveia, Massimo Lapi, Maurizio Orlando, Duarte M. V. Faria, António M. P. Ramos

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This paper deals with the experimental and theoretical evaluation of punching shear capacity of steel fiber reinforced concrete (SFRC) slab–column connections. Five experimental specimens with a thickness of 160 mm, different fiber volume contents (0, 1.0, and 1.5%) and different flexural reinforcement ratios (0.75 and 1.5%) have been tested. The experimental results were evaluated using a physical–mechanical model based on the critical shear crack theory (CSCT). The model has given a good approximation of experimental punching shear strengths. In general, tests have highlighted a significant increase in load and deformation capacity of fiber reinforced concrete slab–column connections in comparison with reinforced concrete connections.

Original languageEnglish
Pages (from-to)217-229
Number of pages13
JournalStructural Concrete
Volume19
Issue number1
DOIs
Publication statusPublished - 1 Feb 2018

Fingerprint

Punching
Steel fibers
Concrete slabs
Reinforced concrete
Fibers
Shear strength
Reinforcement
Cracks

Keywords

  • CSCT
  • experimental tests
  • mechanical model
  • punching
  • SFRC

Cite this

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title = "Experimental and theoretical evaluation of punching strength of steel fiber reinforced concrete slabs",
abstract = "This paper deals with the experimental and theoretical evaluation of punching shear capacity of steel fiber reinforced concrete (SFRC) slab–column connections. Five experimental specimens with a thickness of 160 mm, different fiber volume contents (0, 1.0, and 1.5{\%}) and different flexural reinforcement ratios (0.75 and 1.5{\%}) have been tested. The experimental results were evaluated using a physical–mechanical model based on the critical shear crack theory (CSCT). The model has given a good approximation of experimental punching shear strengths. In general, tests have highlighted a significant increase in load and deformation capacity of fiber reinforced concrete slab–column connections in comparison with reinforced concrete connections.",
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note = "This work received the support from the Fundacao para a Ciencia e a Tecnologia-Ministerio da Ciencia, Tecnologia e Ensino Superior through scholarship number SFRH/BD/109073/2015. The authors thank Eng. Erik Ulrix from BIU, Portugal for supplying fibers. The authors are also grateful to Sonangil, SA and Sika Portugal, SA for providing aggregates and plasticizer, respectively, used in the concrete mixes of this study.",
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Experimental and theoretical evaluation of punching strength of steel fiber reinforced concrete slabs. / Gouveia, Nuno D.; Lapi, Massimo; Orlando, Maurizio; Faria, Duarte M. V.; Ramos, António M. P.

In: Structural Concrete, Vol. 19, No. 1, 01.02.2018, p. 217-229.

Research output: Contribution to journalArticle

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AU - Ramos, António M. P.

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