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

doi:10.1016/j.conbuildmat.2015.04.040

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 journal › Article › peer-review

24 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 language	English
Pages (from-to)	67-75
Number of pages	9
Journal	Construction and Building Materials
Volume	89
DOIs	https://doi.org/10.1016/j.conbuildmat.2015.04.040
Publication status	Published - 2015 Apr 22

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)

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

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.",

keywords = "Biaxial flexure, Compression, Fiber pullout, Shrinkage-reducing admixture, Toughness, Ultra-high-performance fiber-reinforced concrete",

author = "Yoo, {Doo Yeol} and Jihwan Kim and Goangseup Zi and Yoon, {Young Soo}",

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AU - Yoo, Doo Yeol

AU - Kim, Jihwan

AU - Zi, Goangseup

AU - Yoon, Young Soo

PY - 2015/4/22

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AB - 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.

KW - Biaxial flexure

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