Predicting the flexural behavior of ultra-high-performance fiber-reinforced concrete

Doo Yeol Yoo, Nemkumar Banthia, Young Soo Yoon

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

To predict the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams including straight steel fibers with various lengths, micromechanics-based sectional analysis was performed. A linear compressive modeling was adopted on the basis of experiments. The tensile behavior was modeled by considering both pre- and post-cracking tensile behaviors. Pre-cracking behavior was modeled by the rule of mixture. Post-cracking behavior was modeled by a bilinear matrix softening curve and fiber bridging curves, considering three different probability density functions (PDFs) for fiber orientation, i.e., the actual PDF from image analysis and PDFs assuming either random two-dimensional (2-D) or three-dimensional (3-D) fiber orientation. Analytical predictions using the fiber bridging curves with the actual PDF or the PDF assuming 2-D random fiber orientation showed fairly good agreement with the experimental results, whereas analysis using the PDF assuming 3-D random fiber orientation greatly underestimated the experimental results.

Original languageEnglish
Pages (from-to)71-87
Number of pages17
JournalCement and Concrete Composites
Volume74
DOIs
Publication statusPublished - 2016 Nov 1

Fingerprint

Probability density function
Reinforced concrete
Fiber reinforced materials
Fibers
Steel fibers
Micromechanics
Image analysis
Experiments

Keywords

  • Fiber length
  • Flexure
  • Micromechanical modeling
  • Sectional analysis
  • Tension-softening curve
  • Ultra-high-performance fiber-reinforced concrete

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

Predicting the flexural behavior of ultra-high-performance fiber-reinforced concrete. / Yoo, Doo Yeol; Banthia, Nemkumar; Yoon, Young Soo.

In: Cement and Concrete Composites, Vol. 74, 01.11.2016, p. 71-87.

Research output: Contribution to journalArticle

@article{fcf5434e58fb46d9b6e9cc23c79662e7,
title = "Predicting the flexural behavior of ultra-high-performance fiber-reinforced concrete",
abstract = "To predict the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams including straight steel fibers with various lengths, micromechanics-based sectional analysis was performed. A linear compressive modeling was adopted on the basis of experiments. The tensile behavior was modeled by considering both pre- and post-cracking tensile behaviors. Pre-cracking behavior was modeled by the rule of mixture. Post-cracking behavior was modeled by a bilinear matrix softening curve and fiber bridging curves, considering three different probability density functions (PDFs) for fiber orientation, i.e., the actual PDF from image analysis and PDFs assuming either random two-dimensional (2-D) or three-dimensional (3-D) fiber orientation. Analytical predictions using the fiber bridging curves with the actual PDF or the PDF assuming 2-D random fiber orientation showed fairly good agreement with the experimental results, whereas analysis using the PDF assuming 3-D random fiber orientation greatly underestimated the experimental results.",
keywords = "Fiber length, Flexure, Micromechanical modeling, Sectional analysis, Tension-softening curve, Ultra-high-performance fiber-reinforced concrete",
author = "Yoo, {Doo Yeol} and Nemkumar Banthia and Yoon, {Young Soo}",
year = "2016",
month = "11",
day = "1",
doi = "10.1016/j.cemconcomp.2016.09.005",
language = "English",
volume = "74",
pages = "71--87",
journal = "Cement and Concrete Composites",
issn = "0958-9465",
publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Predicting the flexural behavior of ultra-high-performance fiber-reinforced concrete

AU - Yoo, Doo Yeol

AU - Banthia, Nemkumar

AU - Yoon, Young Soo

PY - 2016/11/1

Y1 - 2016/11/1

N2 - To predict the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams including straight steel fibers with various lengths, micromechanics-based sectional analysis was performed. A linear compressive modeling was adopted on the basis of experiments. The tensile behavior was modeled by considering both pre- and post-cracking tensile behaviors. Pre-cracking behavior was modeled by the rule of mixture. Post-cracking behavior was modeled by a bilinear matrix softening curve and fiber bridging curves, considering three different probability density functions (PDFs) for fiber orientation, i.e., the actual PDF from image analysis and PDFs assuming either random two-dimensional (2-D) or three-dimensional (3-D) fiber orientation. Analytical predictions using the fiber bridging curves with the actual PDF or the PDF assuming 2-D random fiber orientation showed fairly good agreement with the experimental results, whereas analysis using the PDF assuming 3-D random fiber orientation greatly underestimated the experimental results.

AB - To predict the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams including straight steel fibers with various lengths, micromechanics-based sectional analysis was performed. A linear compressive modeling was adopted on the basis of experiments. The tensile behavior was modeled by considering both pre- and post-cracking tensile behaviors. Pre-cracking behavior was modeled by the rule of mixture. Post-cracking behavior was modeled by a bilinear matrix softening curve and fiber bridging curves, considering three different probability density functions (PDFs) for fiber orientation, i.e., the actual PDF from image analysis and PDFs assuming either random two-dimensional (2-D) or three-dimensional (3-D) fiber orientation. Analytical predictions using the fiber bridging curves with the actual PDF or the PDF assuming 2-D random fiber orientation showed fairly good agreement with the experimental results, whereas analysis using the PDF assuming 3-D random fiber orientation greatly underestimated the experimental results.

KW - Fiber length

KW - Flexure

KW - Micromechanical modeling

KW - Sectional analysis

KW - Tension-softening curve

KW - Ultra-high-performance fiber-reinforced concrete

UR - http://www.scopus.com/inward/record.url?scp=84987923315&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84987923315&partnerID=8YFLogxK

U2 - 10.1016/j.cemconcomp.2016.09.005

DO - 10.1016/j.cemconcomp.2016.09.005

M3 - Article

AN - SCOPUS:84987923315

VL - 74

SP - 71

EP - 87

JO - Cement and Concrete Composites

JF - Cement and Concrete Composites

SN - 0958-9465

ER -