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Mechanical Investigation on Fiber-Doped Cementitious Materials

Cementitious materials can be reinforced by adding different fibers. However, the effect of different fiber reinforcements on the mechanical properties of cement-based materials remains to be further studied. This paper studies the influencing factors of different fiber cement-based materials by com...

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Autores principales: Ji, Yongcheng, Zou, Yunfei, Wan, Xucheng, Li, Wei
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100226/
https://www.ncbi.nlm.nih.gov/pubmed/35566832
http://dx.doi.org/10.3390/polym14091663
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author Ji, Yongcheng
Zou, Yunfei
Wan, Xucheng
Li, Wei
author_facet Ji, Yongcheng
Zou, Yunfei
Wan, Xucheng
Li, Wei
author_sort Ji, Yongcheng
collection PubMed
description Cementitious materials can be reinforced by adding different fibers. However, the effect of different fiber reinforcements on the mechanical properties of cement-based materials remains to be further studied. This paper studies the influencing factors of different fiber cement-based materials by combining experimental and theoretical methods. The tests used carbon fiber, glass fiber, and polyvinyl alcohol (PVA) fiber-reinforced cement-based materials. The addition ratios of fibers are 0%, 0.5%, and 1% by volume respectively. The compressive strength, bending strength, and drying shrinkage are studied for 3 to 28 d. The relationship between bending strength, compressive strength, dosage, and shrinkage is analyzed. The test results show that carbon fiber cement-based materials’ bending, and compressive strength increase the fastest, followed by glass and PVA fibers. The presented mathematical model accurately predicted the strength of the three fiber cement-based materials at different curing times. Compared to glass fiber and PVA fiber, carbon fiber shrinks less. It can be shown that the fiber significantly affects the early strength change of the fiber cement-based material by changing the shrinkage size of the fiber-cement-based material. The bending strength of carbon fiber, glass fiber, and PVA fiber increases with the increase of fiber volume fraction. On the other hand, the compressive strength increases and then decreases. Mechanical tests show that carbon fiber has the best reinforcement effect. The number of fibers, center spacing, and ultimate tensile length are all important factors that affect the strength of different fiber cement-based materials. Moreover, applied ABAQUS software established compression and bending finite element models of fiber-cement composites. It can predict the mechanical performance concerning fiber cement-based materials’ different types and volume fractions.
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spelling pubmed-91002262022-05-14 Mechanical Investigation on Fiber-Doped Cementitious Materials Ji, Yongcheng Zou, Yunfei Wan, Xucheng Li, Wei Polymers (Basel) Article Cementitious materials can be reinforced by adding different fibers. However, the effect of different fiber reinforcements on the mechanical properties of cement-based materials remains to be further studied. This paper studies the influencing factors of different fiber cement-based materials by combining experimental and theoretical methods. The tests used carbon fiber, glass fiber, and polyvinyl alcohol (PVA) fiber-reinforced cement-based materials. The addition ratios of fibers are 0%, 0.5%, and 1% by volume respectively. The compressive strength, bending strength, and drying shrinkage are studied for 3 to 28 d. The relationship between bending strength, compressive strength, dosage, and shrinkage is analyzed. The test results show that carbon fiber cement-based materials’ bending, and compressive strength increase the fastest, followed by glass and PVA fibers. The presented mathematical model accurately predicted the strength of the three fiber cement-based materials at different curing times. Compared to glass fiber and PVA fiber, carbon fiber shrinks less. It can be shown that the fiber significantly affects the early strength change of the fiber cement-based material by changing the shrinkage size of the fiber-cement-based material. The bending strength of carbon fiber, glass fiber, and PVA fiber increases with the increase of fiber volume fraction. On the other hand, the compressive strength increases and then decreases. Mechanical tests show that carbon fiber has the best reinforcement effect. The number of fibers, center spacing, and ultimate tensile length are all important factors that affect the strength of different fiber cement-based materials. Moreover, applied ABAQUS software established compression and bending finite element models of fiber-cement composites. It can predict the mechanical performance concerning fiber cement-based materials’ different types and volume fractions. MDPI 2022-04-20 /pmc/articles/PMC9100226/ /pubmed/35566832 http://dx.doi.org/10.3390/polym14091663 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ji, Yongcheng
Zou, Yunfei
Wan, Xucheng
Li, Wei
Mechanical Investigation on Fiber-Doped Cementitious Materials
title Mechanical Investigation on Fiber-Doped Cementitious Materials
title_full Mechanical Investigation on Fiber-Doped Cementitious Materials
title_fullStr Mechanical Investigation on Fiber-Doped Cementitious Materials
title_full_unstemmed Mechanical Investigation on Fiber-Doped Cementitious Materials
title_short Mechanical Investigation on Fiber-Doped Cementitious Materials
title_sort mechanical investigation on fiber-doped cementitious materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9100226/
https://www.ncbi.nlm.nih.gov/pubmed/35566832
http://dx.doi.org/10.3390/polym14091663
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