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Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout

A textile reinforced concrete (TRC) system has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures. This paper proposes an accelerated on-site installation method of a TRC system by grouting to strengthen deteriorated RC structures. Four RC slabs were st...

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Autores principales: Kim, Hyeong-Yeol, You, Young-Jun, Ryu, Gum-Sung
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433900/
https://www.ncbi.nlm.nih.gov/pubmed/34501137
http://dx.doi.org/10.3390/ma14175046
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author Kim, Hyeong-Yeol
You, Young-Jun
Ryu, Gum-Sung
author_facet Kim, Hyeong-Yeol
You, Young-Jun
Ryu, Gum-Sung
author_sort Kim, Hyeong-Yeol
collection PubMed
description A textile reinforced concrete (TRC) system has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures. This paper proposes an accelerated on-site installation method of a TRC system by grouting to strengthen deteriorated RC structures. Four RC slabs were strengthened with one ply of carbon textile grid and 20 mm-thick cementitious grout. The TRC strengthened slab specimens were tested under flexure and the test results were compared with those of an unstrengthened specimen and theoretical solutions. Furthermore, the TRC strengthened specimens experienced longer plastic deformation after steel yield than the unstrengthened specimen. The TRC strengthened specimens exhibited many fine cracks and finally failed by rupture of the textile. Therefore, TRC system with the proposed installation method can effectively be used for strengthening of deteriorated RC structural elements. The theoretically computed steel yield and ultimate loads overestimate the test data by 11% and 5%, respectively.
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spelling pubmed-84339002021-09-12 Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout Kim, Hyeong-Yeol You, Young-Jun Ryu, Gum-Sung Materials (Basel) Article A textile reinforced concrete (TRC) system has been widely used for repair and strengthening of deteriorated reinforced concrete (RC) structures. This paper proposes an accelerated on-site installation method of a TRC system by grouting to strengthen deteriorated RC structures. Four RC slabs were strengthened with one ply of carbon textile grid and 20 mm-thick cementitious grout. The TRC strengthened slab specimens were tested under flexure and the test results were compared with those of an unstrengthened specimen and theoretical solutions. Furthermore, the TRC strengthened specimens experienced longer plastic deformation after steel yield than the unstrengthened specimen. The TRC strengthened specimens exhibited many fine cracks and finally failed by rupture of the textile. Therefore, TRC system with the proposed installation method can effectively be used for strengthening of deteriorated RC structural elements. The theoretically computed steel yield and ultimate loads overestimate the test data by 11% and 5%, respectively. MDPI 2021-09-03 /pmc/articles/PMC8433900/ /pubmed/34501137 http://dx.doi.org/10.3390/ma14175046 Text en © 2021 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
Kim, Hyeong-Yeol
You, Young-Jun
Ryu, Gum-Sung
Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title_full Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title_fullStr Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title_full_unstemmed Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title_short Reinforced Concrete Slabs Strengthened with Carbon Textile Grid and Cementitious Grout
title_sort reinforced concrete slabs strengthened with carbon textile grid and cementitious grout
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8433900/
https://www.ncbi.nlm.nih.gov/pubmed/34501137
http://dx.doi.org/10.3390/ma14175046
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