On the cracking localization in tensile reinforced concrete bars with steel fibers

Yuri S. Karinski, Avraham N. Dancygier

Research output: Contribution to journalConference articlepeer-review

Abstract

This paper presents a probabilistic model to explain the phenomenon of crack localization in tensile reinforced concrete (RC) bars with steel fibers. The model quantitatively characterizes a state of crack localization through setting of a criterion for the development of an 'exceptionally wide crack' (EWC). A binomial probability function is proposed, where its maximum value denotes the most expected number of cracks that widen more than the others. Thus, this approach allows prediction of the "localization level" according to the expected number of EWC's under increase load, as oppose to a state of similar widening of the cracks in plain RC. Comparison of the model's prediction with available experimental results shows good agreement and a case study shows that for low reinforcement ratios it is most probable that only one or two cracks will widen while as the conventional reinforcement increases, the widths of the cracks become more uniform.

Original languageEnglish
Pages (from-to)329-330
Number of pages2
Journalfib Symposium
StatePublished - 2015
EventInternational fib Symposium on Concrete - Innovation and Design, 2015 - Copenhagen, Denmark
Duration: 18 May 201520 May 2015

Keywords

  • Crack localization
  • Probabilistic model
  • Steel fibers

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (miscellaneous)

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