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Systematic Review on the Creep of Fiber-Reinforced Concrete

Fiber-reinforced concrete (FRC) is increasingly used in structural applications owing to its benefits in terms of toughness, durability, ductility, construction cost and time. However, research on the creep behavior of FRC has not kept pace with other areas such as short-term properties. Therefore,...

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Autores principales: Tošić, Nikola, Aidarov, Stanislav, de la Fuente, Albert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7698141/
https://www.ncbi.nlm.nih.gov/pubmed/33198156
http://dx.doi.org/10.3390/ma13225098
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author Tošić, Nikola
Aidarov, Stanislav
de la Fuente, Albert
author_facet Tošić, Nikola
Aidarov, Stanislav
de la Fuente, Albert
author_sort Tošić, Nikola
collection PubMed
description Fiber-reinforced concrete (FRC) is increasingly used in structural applications owing to its benefits in terms of toughness, durability, ductility, construction cost and time. However, research on the creep behavior of FRC has not kept pace with other areas such as short-term properties. Therefore, this study aims to present a comprehensive and critical review of literature on the creep properties and behavior of FRC with recommendations for future research. A transparent literature search and filtering methodology were used to identify studies regarding creep on the single fiber level, FRC material level, and level of structural behavior of FRC members. Both experimental and theoretical research are analyzed. The results of the review show that, at the single fiber level, pull-out creep should be considered for steel fiber-reinforced concrete, whereas fiber creep can be a governing design parameter in the case of polymeric fiber reinforced concrete subjected to permanent tensile stresses incompatible with the mechanical time-dependent performance of the fiber. On the material level of FRC, a wide variety of test parameters still hinders the formulation of comprehensive constitutive models that allow proper consideration of the creep in the design of FRC elements. Although significant research remains to be carried out, the experience gained so far confirms that both steel and polymeric fibers can be used as concrete reinforcement provided certain limitations in terms of structural applications are imposed. Finally, by providing recommendations for future research, this study aims to contribute to code development and industry uptake of structural FRC applications.
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spelling pubmed-76981412020-11-29 Systematic Review on the Creep of Fiber-Reinforced Concrete Tošić, Nikola Aidarov, Stanislav de la Fuente, Albert Materials (Basel) Review Fiber-reinforced concrete (FRC) is increasingly used in structural applications owing to its benefits in terms of toughness, durability, ductility, construction cost and time. However, research on the creep behavior of FRC has not kept pace with other areas such as short-term properties. Therefore, this study aims to present a comprehensive and critical review of literature on the creep properties and behavior of FRC with recommendations for future research. A transparent literature search and filtering methodology were used to identify studies regarding creep on the single fiber level, FRC material level, and level of structural behavior of FRC members. Both experimental and theoretical research are analyzed. The results of the review show that, at the single fiber level, pull-out creep should be considered for steel fiber-reinforced concrete, whereas fiber creep can be a governing design parameter in the case of polymeric fiber reinforced concrete subjected to permanent tensile stresses incompatible with the mechanical time-dependent performance of the fiber. On the material level of FRC, a wide variety of test parameters still hinders the formulation of comprehensive constitutive models that allow proper consideration of the creep in the design of FRC elements. Although significant research remains to be carried out, the experience gained so far confirms that both steel and polymeric fibers can be used as concrete reinforcement provided certain limitations in terms of structural applications are imposed. Finally, by providing recommendations for future research, this study aims to contribute to code development and industry uptake of structural FRC applications. MDPI 2020-11-12 /pmc/articles/PMC7698141/ /pubmed/33198156 http://dx.doi.org/10.3390/ma13225098 Text en © 2020 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 Review
Tošić, Nikola
Aidarov, Stanislav
de la Fuente, Albert
Systematic Review on the Creep of Fiber-Reinforced Concrete
title Systematic Review on the Creep of Fiber-Reinforced Concrete
title_full Systematic Review on the Creep of Fiber-Reinforced Concrete
title_fullStr Systematic Review on the Creep of Fiber-Reinforced Concrete
title_full_unstemmed Systematic Review on the Creep of Fiber-Reinforced Concrete
title_short Systematic Review on the Creep of Fiber-Reinforced Concrete
title_sort systematic review on the creep of fiber-reinforced concrete
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7698141/
https://www.ncbi.nlm.nih.gov/pubmed/33198156
http://dx.doi.org/10.3390/ma13225098
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