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External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping
Carbon-fiber-reinforced polymer (CFRP) is a composite material used to mend and strengthen concrete structural elements in civil engineering. The prime aim of this experimental study is to investigate the comportment of confined concrete cylinders (CCC) under uniaxial loads by altering the concrete...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695852/ https://www.ncbi.nlm.nih.gov/pubmed/36431716 http://dx.doi.org/10.3390/ma15228232 |
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author | Karouche, Abdelhamid Hebbache, Kamel Belebchouche, Cherif Lahbari, Noureddine Kessal, Oussama Czarnecki, Slawomir |
author_facet | Karouche, Abdelhamid Hebbache, Kamel Belebchouche, Cherif Lahbari, Noureddine Kessal, Oussama Czarnecki, Slawomir |
author_sort | Karouche, Abdelhamid |
collection | PubMed |
description | Carbon-fiber-reinforced polymer (CFRP) is a composite material used to mend and strengthen concrete structural elements in civil engineering. The prime aim of this experimental study is to investigate the comportment of confined concrete cylinders (CCC) under uniaxial loads by altering the concrete strength, the CFRP angle orientation, and the volumetric ratio, following the externally bonded reinforcement technique (EBR). We present the results of the confinement effect and failure mechanisms issue of more than 150 specimens of CFRP confined concrete cylinders that have been undertaken and in which several parameters were altered. Totally and partially confined concrete cylinders were tested for failure under axial compressive loads and indirect tensile tests. Four different ratios of water/cement (0.33, 0.36, 0.401, and 0.522) were investigated. In addition, three sand–resin ratios were prepared to improve the mechanical properties and the adhesion of the CFRP and the concrete. The obtained results revealed a clear improvement in the compressive strength of the specimens made with low strength concrete (from 38% to 66%) compared to those made of high strength concrete (from 11% to 31%), where the improvements are relatively low. Furthermore, the transversally confined concrete cylinders presented significant gains in strength over those confined longitudinally. Lastly, adding sand to the resin increases the compressive strength of confined concrete cylinders (1.19% to 54.62%) and reduces the cost of the resin used for fixing CFRP materials. |
format | Online Article Text |
id | pubmed-9695852 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96958522022-11-26 External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping Karouche, Abdelhamid Hebbache, Kamel Belebchouche, Cherif Lahbari, Noureddine Kessal, Oussama Czarnecki, Slawomir Materials (Basel) Article Carbon-fiber-reinforced polymer (CFRP) is a composite material used to mend and strengthen concrete structural elements in civil engineering. The prime aim of this experimental study is to investigate the comportment of confined concrete cylinders (CCC) under uniaxial loads by altering the concrete strength, the CFRP angle orientation, and the volumetric ratio, following the externally bonded reinforcement technique (EBR). We present the results of the confinement effect and failure mechanisms issue of more than 150 specimens of CFRP confined concrete cylinders that have been undertaken and in which several parameters were altered. Totally and partially confined concrete cylinders were tested for failure under axial compressive loads and indirect tensile tests. Four different ratios of water/cement (0.33, 0.36, 0.401, and 0.522) were investigated. In addition, three sand–resin ratios were prepared to improve the mechanical properties and the adhesion of the CFRP and the concrete. The obtained results revealed a clear improvement in the compressive strength of the specimens made with low strength concrete (from 38% to 66%) compared to those made of high strength concrete (from 11% to 31%), where the improvements are relatively low. Furthermore, the transversally confined concrete cylinders presented significant gains in strength over those confined longitudinally. Lastly, adding sand to the resin increases the compressive strength of confined concrete cylinders (1.19% to 54.62%) and reduces the cost of the resin used for fixing CFRP materials. MDPI 2022-11-19 /pmc/articles/PMC9695852/ /pubmed/36431716 http://dx.doi.org/10.3390/ma15228232 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 Karouche, Abdelhamid Hebbache, Kamel Belebchouche, Cherif Lahbari, Noureddine Kessal, Oussama Czarnecki, Slawomir External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title | External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title_full | External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title_fullStr | External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title_full_unstemmed | External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title_short | External Confined Concrete Cylinders Behavior under Axial Compression Using CFRP Wrapping |
title_sort | external confined concrete cylinders behavior under axial compression using cfrp wrapping |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9695852/ https://www.ncbi.nlm.nih.gov/pubmed/36431716 http://dx.doi.org/10.3390/ma15228232 |
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