Effect of shrinkage-reducing admixture on biaxial flexural behavior of ultra-high-performance fiber-reinforced concrete

Doo Yeol Yoo, Jihwan Kim, Goangseup Zi, Young Soo Yoon

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This study aims to investigate the effect of shrinkage-reducing admixture (SRA) on the mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC). Three different SRA to cement weight ratios (0%, 1%, and 2%) were considered using the UHPFRC including 2% of smooth steel fibers by volume. The specimen without SRA exhibited the best performance in almost all aspects of the mechanical behaviors in compression, fiber pullout, and biaxial flexure including load carrying capacity, strain capacity, and energy absorption capacity (pullout energy and toughness). The mechanical performances deteriorated with the increase in the amount of SRA up to 2%. Finally, a suggestion was made to define the first cracking point of deflection-hardening UHPFRC under biaxial flexure stress.

Original languageEnglish
Pages (from-to)67-75
Number of pages9
JournalConstruction and Building Materials
Volume89
DOIs
Publication statusPublished - 2015 Apr 22

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Reinforced concrete
Fibers
Steel fibers
Energy absorption
Load limits
Toughness
Hardening
Cements
Compaction
Mechanical properties

Keywords

  • Biaxial flexure
  • Compression
  • Fiber pullout
  • Shrinkage-reducing admixture
  • Toughness
  • Ultra-high-performance fiber-reinforced concrete

ASJC Scopus subject areas

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

Cite this

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abstract = "This study aims to investigate the effect of shrinkage-reducing admixture (SRA) on the mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC). Three different SRA to cement weight ratios (0{\%}, 1{\%}, and 2{\%}) were considered using the UHPFRC including 2{\%} of smooth steel fibers by volume. The specimen without SRA exhibited the best performance in almost all aspects of the mechanical behaviors in compression, fiber pullout, and biaxial flexure including load carrying capacity, strain capacity, and energy absorption capacity (pullout energy and toughness). The mechanical performances deteriorated with the increase in the amount of SRA up to 2{\%}. Finally, a suggestion was made to define the first cracking point of deflection-hardening UHPFRC under biaxial flexure stress.",
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AU - Yoo, Doo Yeol

AU - Kim, Jihwan

AU - Zi, Goangseup

AU - Yoon, Young Soo

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N2 - This study aims to investigate the effect of shrinkage-reducing admixture (SRA) on the mechanical properties of ultra-high-performance fiber-reinforced concrete (UHPFRC). Three different SRA to cement weight ratios (0%, 1%, and 2%) were considered using the UHPFRC including 2% of smooth steel fibers by volume. The specimen without SRA exhibited the best performance in almost all aspects of the mechanical behaviors in compression, fiber pullout, and biaxial flexure including load carrying capacity, strain capacity, and energy absorption capacity (pullout energy and toughness). The mechanical performances deteriorated with the increase in the amount of SRA up to 2%. Finally, a suggestion was made to define the first cracking point of deflection-hardening UHPFRC under biaxial flexure stress.

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KW - Toughness

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