Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate

Corrosion creates a significant degradation mechanism in reinforced concrete (RC) structures, which would require a high cost of maintenance and repair in affected buildings. However, as the cost of repairing corrosion-damaged structures is high, it is therefore pertinent to develop alternative eco-...

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Autores principales:	Paul Oluwaseun Awoyera, Tobechukwu Austin Nworgu, Balaji Shanmugam, Krishna Prakash Arunachalam, Iman Mansouri, Lenin Miguel Bendezu Romero, Jong-Wan Hu
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	concrete repair sustainable materials corrosion control fiber laminate structural failure bamboo laminate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/fbed233b841342fb9a94f91c44ba8396
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spelling	oai:doaj.org-article:fbed233b841342fb9a94f91c44ba83962021-11-11T18:12:25ZStructural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate10.3390/ma142167111996-1944https://doaj.org/article/fbed233b841342fb9a94f91c44ba83962021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6711https://doaj.org/toc/1996-1944Corrosion creates a significant degradation mechanism in reinforced concrete (RC) structures, which would require a high cost of maintenance and repair in affected buildings. However, as the cost of repairing corrosion-damaged structures is high, it is therefore pertinent to develop alternative eco-friendly and sustainable methods. In this study, structural retrofitting of corroded reinforced concrete beams was performed using bamboo fiber laminate. Three reinforced normal weight concrete beams were produced, two of which were exposed to laboratory simulated corrosion medium, and the remaining one sample served as control. Upon completion of the corrosion cycle, one of the two corroded beams was retrofitted externally with a prefabricated bamboo fiber laminate by bonding the laminate to the beam surface with the aid of an epoxy resin. The three beams were subjected to loading on a four-point ultimate testing machine, and the loads with corresponding deflections were recorded through the entire load cycle of the beams. Finally, the mass loss of embedded steel reinforcements was determined to measure the effect of corrosion on the beams and the steel. The result showed that corroded beams strengthened with bamboo laminates increase the bearing capacity. Using a single bamboo laminate in the tensile region of the corroded beam increased the ultimate load capacity of the beam up to 21.1% than the corroded beam without retrofit. It was demonstrated in this study that the use of bamboo fiber polymer for strengthening destressed RC beams is a more sustainable approach than the conventional synthetic fibers.Paul Oluwaseun AwoyeraTobechukwu Austin NworguBalaji ShanmugamKrishna Prakash ArunachalamIman MansouriLenin Miguel Bendezu RomeroJong-Wan HuMDPI AGarticleconcrete repairsustainable materialscorrosion controlfiber laminatestructural failurebamboo laminateTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6711, p 6711 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	concrete repair sustainable materials corrosion control fiber laminate structural failure bamboo laminate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	concrete repair sustainable materials corrosion control fiber laminate structural failure bamboo laminate Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Paul Oluwaseun Awoyera Tobechukwu Austin Nworgu Balaji Shanmugam Krishna Prakash Arunachalam Iman Mansouri Lenin Miguel Bendezu Romero Jong-Wan Hu Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
description	Corrosion creates a significant degradation mechanism in reinforced concrete (RC) structures, which would require a high cost of maintenance and repair in affected buildings. However, as the cost of repairing corrosion-damaged structures is high, it is therefore pertinent to develop alternative eco-friendly and sustainable methods. In this study, structural retrofitting of corroded reinforced concrete beams was performed using bamboo fiber laminate. Three reinforced normal weight concrete beams were produced, two of which were exposed to laboratory simulated corrosion medium, and the remaining one sample served as control. Upon completion of the corrosion cycle, one of the two corroded beams was retrofitted externally with a prefabricated bamboo fiber laminate by bonding the laminate to the beam surface with the aid of an epoxy resin. The three beams were subjected to loading on a four-point ultimate testing machine, and the loads with corresponding deflections were recorded through the entire load cycle of the beams. Finally, the mass loss of embedded steel reinforcements was determined to measure the effect of corrosion on the beams and the steel. The result showed that corroded beams strengthened with bamboo laminates increase the bearing capacity. Using a single bamboo laminate in the tensile region of the corroded beam increased the ultimate load capacity of the beam up to 21.1% than the corroded beam without retrofit. It was demonstrated in this study that the use of bamboo fiber polymer for strengthening destressed RC beams is a more sustainable approach than the conventional synthetic fibers.
format	article
author	Paul Oluwaseun Awoyera Tobechukwu Austin Nworgu Balaji Shanmugam Krishna Prakash Arunachalam Iman Mansouri Lenin Miguel Bendezu Romero Jong-Wan Hu
author_facet	Paul Oluwaseun Awoyera Tobechukwu Austin Nworgu Balaji Shanmugam Krishna Prakash Arunachalam Iman Mansouri Lenin Miguel Bendezu Romero Jong-Wan Hu
author_sort	Paul Oluwaseun Awoyera
title	Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
title_short	Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
title_full	Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
title_fullStr	Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
title_full_unstemmed	Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate
title_sort	structural retrofitting of corroded reinforced concrete beams using bamboo fiber laminate
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/fbed233b841342fb9a94f91c44ba8396
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Structural Retrofitting of Corroded Reinforced Concrete Beams Using Bamboo Fiber Laminate

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