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Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP

Flax fibre has been used to reinforce concrete composite, but its dynamic properties have not been thoroughly studied. This study investigates the dynamic splitting tensile properties of plain concrete (PC) confined by flax-fibre-reinforced polymer (FFRP) and glass-fibre-reinforced polymer (GFRP). T...

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Autores principales: Wang, Wenjie, Mo, Zonglai, Zhang, Yunpeng, Chouw, Nawawi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611135/
https://www.ncbi.nlm.nih.gov/pubmed/36298002
http://dx.doi.org/10.3390/polym14204424
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author Wang, Wenjie
Mo, Zonglai
Zhang, Yunpeng
Chouw, Nawawi
author_facet Wang, Wenjie
Mo, Zonglai
Zhang, Yunpeng
Chouw, Nawawi
author_sort Wang, Wenjie
collection PubMed
description Flax fibre has been used to reinforce concrete composite, but its dynamic properties have not been thoroughly studied. This study investigates the dynamic splitting tensile properties of plain concrete (PC) confined by flax-fibre-reinforced polymer (FFRP) and glass-fibre-reinforced polymer (GFRP). The dynamic splitting tensile tests were carried out on PC, FFRP-PC, and GFRP-PC cylinder specimens by the high-speed servo-hydraulic machine, with the impact-induced strain rates ranging from 0.1 to 58 s(−1). The effect of the FRP confinement, FRP thickness and strain rate on the dynamic splitting tensile behaviour were assessed. The results indicated that similar confinement effectiveness of FFRP and GFRP is observed. The dynamic tensile strength of 1- and 2-layer FFRP-PC increased by 29% and 67%, and the one- and two-layer GFRP-PC increased by 32% and 84%, respectively. FFRP-PC and GFRP-PC cylinders showed less sensitivity to the strain rate compared with PC. The empirical relationship between the tensile DIF and strain rate for PC, FFRP-PC and GFRP-PC was proposed based on experimental data. The proposed model was developed to predict the dynamic splitting tensile strength. The results suggested the potential of FFRP composites applied into concrete structures under extreme dynamic loadings.
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spelling pubmed-96111352022-10-28 Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP Wang, Wenjie Mo, Zonglai Zhang, Yunpeng Chouw, Nawawi Polymers (Basel) Article Flax fibre has been used to reinforce concrete composite, but its dynamic properties have not been thoroughly studied. This study investigates the dynamic splitting tensile properties of plain concrete (PC) confined by flax-fibre-reinforced polymer (FFRP) and glass-fibre-reinforced polymer (GFRP). The dynamic splitting tensile tests were carried out on PC, FFRP-PC, and GFRP-PC cylinder specimens by the high-speed servo-hydraulic machine, with the impact-induced strain rates ranging from 0.1 to 58 s(−1). The effect of the FRP confinement, FRP thickness and strain rate on the dynamic splitting tensile behaviour were assessed. The results indicated that similar confinement effectiveness of FFRP and GFRP is observed. The dynamic tensile strength of 1- and 2-layer FFRP-PC increased by 29% and 67%, and the one- and two-layer GFRP-PC increased by 32% and 84%, respectively. FFRP-PC and GFRP-PC cylinders showed less sensitivity to the strain rate compared with PC. The empirical relationship between the tensile DIF and strain rate for PC, FFRP-PC and GFRP-PC was proposed based on experimental data. The proposed model was developed to predict the dynamic splitting tensile strength. The results suggested the potential of FFRP composites applied into concrete structures under extreme dynamic loadings. MDPI 2022-10-19 /pmc/articles/PMC9611135/ /pubmed/36298002 http://dx.doi.org/10.3390/polym14204424 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
Wang, Wenjie
Mo, Zonglai
Zhang, Yunpeng
Chouw, Nawawi
Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title_full Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title_fullStr Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title_full_unstemmed Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title_short Dynamic Splitting Tensile Behaviour of Concrete Confined by Natural Flax and Glass FRP
title_sort dynamic splitting tensile behaviour of concrete confined by natural flax and glass frp
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611135/
https://www.ncbi.nlm.nih.gov/pubmed/36298002
http://dx.doi.org/10.3390/polym14204424
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