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Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure

In this study, the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) is examined as a function of fiber length and volume fraction. Straight steel fiber with three different lengths (l(f)) of 13, 19.5, and 30 mm and four different volume fractions (v(f)) of 0.5%, 1.0%, 1...

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Autores principales: Park, Jung-Jun, Yoo, Doo-Yeol, Park, Gi-Joon, Kim, Sung-Wook
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459167/
https://www.ncbi.nlm.nih.gov/pubmed/28772477
http://dx.doi.org/10.3390/ma10020118
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author Park, Jung-Jun
Yoo, Doo-Yeol
Park, Gi-Joon
Kim, Sung-Wook
author_facet Park, Jung-Jun
Yoo, Doo-Yeol
Park, Gi-Joon
Kim, Sung-Wook
author_sort Park, Jung-Jun
collection PubMed
description In this study, the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) is examined as a function of fiber length and volume fraction. Straight steel fiber with three different lengths (l(f)) of 13, 19.5, and 30 mm and four different volume fractions (v(f)) of 0.5%, 1.0%, 1.5%, and 2.0% are considered. Test results show that post-cracking flexural properties of UHPFRC, such as flexural strength, deflection capacity, toughness, and cracking behavior, improve with increasing fiber length and volume fraction, while first-cracking properties are not significantly influenced by fiber length and volume fraction. A 0.5 vol % reduction of steel fiber content relative to commercial UHPFRC can be achieved without deterioration of flexural performance by replacing short fibers (l(f) of 13 mm) with longer fibers (l(f) of 19.5 mm and 30 mm).
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spelling pubmed-54591672017-07-28 Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure Park, Jung-Jun Yoo, Doo-Yeol Park, Gi-Joon Kim, Sung-Wook Materials (Basel) Article In this study, the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) is examined as a function of fiber length and volume fraction. Straight steel fiber with three different lengths (l(f)) of 13, 19.5, and 30 mm and four different volume fractions (v(f)) of 0.5%, 1.0%, 1.5%, and 2.0% are considered. Test results show that post-cracking flexural properties of UHPFRC, such as flexural strength, deflection capacity, toughness, and cracking behavior, improve with increasing fiber length and volume fraction, while first-cracking properties are not significantly influenced by fiber length and volume fraction. A 0.5 vol % reduction of steel fiber content relative to commercial UHPFRC can be achieved without deterioration of flexural performance by replacing short fibers (l(f) of 13 mm) with longer fibers (l(f) of 19.5 mm and 30 mm). MDPI 2017-01-28 /pmc/articles/PMC5459167/ /pubmed/28772477 http://dx.doi.org/10.3390/ma10020118 Text en © 2017 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Park, Jung-Jun
Yoo, Doo-Yeol
Park, Gi-Joon
Kim, Sung-Wook
Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title_full Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title_fullStr Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title_full_unstemmed Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title_short Feasibility of Reducing the Fiber Content in Ultra-High-Performance Fiber-Reinforced Concrete under Flexure
title_sort feasibility of reducing the fiber content in ultra-high-performance fiber-reinforced concrete under flexure
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5459167/
https://www.ncbi.nlm.nih.gov/pubmed/28772477
http://dx.doi.org/10.3390/ma10020118
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