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Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis

Polymer Flexible Joint (PFJ) is a method for repairs of concrete elements, which enables carrying loads and large deformations effectively. This article presents the possibility of applying PFJ on beams subjected to bending and describes the influence of such joints on concrete elements. An experime...

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Autores principales: Zdanowicz, Łukasz, Seręga, Szymon, Tekieli, Marcin, Kwiecień, Arkadiusz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7765571/
https://www.ncbi.nlm.nih.gov/pubmed/33339163
http://dx.doi.org/10.3390/ma13245732
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author Zdanowicz, Łukasz
Seręga, Szymon
Tekieli, Marcin
Kwiecień, Arkadiusz
author_facet Zdanowicz, Łukasz
Seręga, Szymon
Tekieli, Marcin
Kwiecień, Arkadiusz
author_sort Zdanowicz, Łukasz
collection PubMed
description Polymer Flexible Joint (PFJ) is a method for repairs of concrete elements, which enables carrying loads and large deformations effectively. This article presents the possibility of applying PFJ on beams subjected to bending and describes the influence of such joints on concrete elements. An experimental investigation was conducted to determine the behavior of concrete in a four-point bending test. The research program included flexural tests of plain concrete elements with a notch, as well as tests of elements which were repaired with PFJ after failure. Based on the experimental results, the numerical characteristics of analyzed polymer and concrete were calibrated. A nonlinear numerical model is developed, which describes the behavior of concrete elements and polymer in the experiments. The model is used to numerically analyze deformations and stresses under increasing load. The influence of flexible joint on concrete elements is described and behavior of elements repaired with PFJ is compared to original elements. Particular attention was paid to the stress redistribution in concrete. The application of flexible joint positively influences load capacity of the connected concrete elements. Furthermore, because of stress redistribution, connected elements can bear larger deformations than original ones. PFJ can therefore be considered an efficient repair method for connecting concrete elements.
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spelling pubmed-77655712020-12-27 Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis Zdanowicz, Łukasz Seręga, Szymon Tekieli, Marcin Kwiecień, Arkadiusz Materials (Basel) Article Polymer Flexible Joint (PFJ) is a method for repairs of concrete elements, which enables carrying loads and large deformations effectively. This article presents the possibility of applying PFJ on beams subjected to bending and describes the influence of such joints on concrete elements. An experimental investigation was conducted to determine the behavior of concrete in a four-point bending test. The research program included flexural tests of plain concrete elements with a notch, as well as tests of elements which were repaired with PFJ after failure. Based on the experimental results, the numerical characteristics of analyzed polymer and concrete were calibrated. A nonlinear numerical model is developed, which describes the behavior of concrete elements and polymer in the experiments. The model is used to numerically analyze deformations and stresses under increasing load. The influence of flexible joint on concrete elements is described and behavior of elements repaired with PFJ is compared to original elements. Particular attention was paid to the stress redistribution in concrete. The application of flexible joint positively influences load capacity of the connected concrete elements. Furthermore, because of stress redistribution, connected elements can bear larger deformations than original ones. PFJ can therefore be considered an efficient repair method for connecting concrete elements. MDPI 2020-12-16 /pmc/articles/PMC7765571/ /pubmed/33339163 http://dx.doi.org/10.3390/ma13245732 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 Article
Zdanowicz, Łukasz
Seręga, Szymon
Tekieli, Marcin
Kwiecień, Arkadiusz
Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title_full Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title_fullStr Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title_full_unstemmed Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title_short Polymer Flexible Joint as a Repair Method of Concrete Elements: Flexural Testing and Numerical Analysis
title_sort polymer flexible joint as a repair method of concrete elements: flexural testing and numerical analysis
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7765571/
https://www.ncbi.nlm.nih.gov/pubmed/33339163
http://dx.doi.org/10.3390/ma13245732
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