Influence of reinforcing bar type on autogenous shrinkage stress and bond behavior of ultra high performance fiber reinforced concrete

Doo Yeol Yoo, Jung Jun Park, Sung Wook Kim, Young Soo Yoon

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

This study investigated the effects of reinforcing bar type and reinforcement ratio on the restrained shrinkage behaviors of ultra high performance fiber reinforced concrete (UHPFRC), including autogenous shrinkage stress, degree of restraint, and cracking potential. In addition, the influence of the type and embedment length of reinforcing bars on the bond behavior of UHPFRC was evaluated by performing pullout test. Three different reinforcing bars (deformed steel bar, round steel bar, and GFRP bar) were investigated in the restrained shrinkage and pullout tests. The GFRP bar exhibited the best performance in relation to the autogenous shrinkage stress, degree of restraint, and cracking potential because of its low stiffness. The highest bond strength was obtained for the deformed steel bar, and the bar yielding was observed when the bar embedment length of lb = 2db was used. The round steel bar exhibited the poorest behaviors for both of the restrained shrinkage and pullout.

Original languageEnglish
Pages (from-to)150-161
Number of pages12
JournalCement and Concrete Composites
Volume48
DOIs
Publication statusPublished - 2014 Apr 1

Keywords

  • Autogenous shrinkage stress
  • Bond performance
  • Cracking potential
  • Degree of restraint
  • Reinforcing bars
  • Ultra high performance fiber reinforced concrete

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

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