Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments

Increased traffic in combination with growing environmental impacts have led to the accelerated degradation of built infrastructure. In reinforced concrete structures, the corrosion of steel reinforcement is the predominant cause of deterioration. Thus, over the last years the use of glass fiber rei...

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Authors: Ruiz Emparanza, Álvaro, De Caso y Basalo, Francisco J., Kampmann, Raphael, Adarraga Usabiaga, María Iciar
Format: article
Publication Date:2018
Country:España
Institution:Universidad del País Vasco
Repository:Addi. Archivo Digital para la Docencia y la Investigación
OAI Identifier:oai:addi.ehu.eus:10810/32302
Online Access:http://hdl.handle.net/10810/32302
Access Level:Open access
Keyword:GFRP rebars
durability
bond
temperature
surface enhancement
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spelling Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine EnvironmentsRuiz Emparanza, ÁlvaroDe Caso y Basalo, Francisco J.Kampmann, RaphaelAdarraga Usabiaga, María IciarGFRP rebarsdurabilitybondtemperaturesurface enhancementIncreased traffic in combination with growing environmental impacts have led to the accelerated degradation of built infrastructure. In reinforced concrete structures, the corrosion of steel reinforcement is the predominant cause of deterioration. Thus, over the last years the use of glass fiber reinforced polymer (GFRP) composites as internal reinforcement bars (rebars) for concrete structures has been evaluated, and has been proved to be a viable alternative to traditional steel reinforcement mainly due to its tensile strength and non-corrosive nature. However, thus far, the GFRP rebar market is diverse and manufacturers around the world produce GFRP rebar types with different surface enhancements to improve the bond to concrete characteristics. In this study, the bond performance of three dissimilar GFRP rebar types (sand coated, helically grooved and with surface lugs) was evaluated over time in seawater environments, with a focus on the bond strength. Accordingly, specimens were exposed to seawater in circulating chambers at three different temperatures (23 °C, 40 °C and 60 °C) for multiple time periods (60 and 120 days). To evaluate the bond performance, pullout tests were conducted according to ASTM D7913. The results showed that the bond strength varied with the surface enhancement features. However, the bond strength did not vary significantly with exposure time and temperature for all three evaluated rebar types.This research was funded by the Florida Department of Transportation under the grant BDV30TW0977-18.MDPI201920192018info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10810/32302reponame:Addi. Archivo Digital para la Docencia y la Investigacióninstname:Universidad del País VascoIngléshttps://www.mdpi.com/2412-3811/3/4/44info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/3.0/es/oai:addi.ehu.eus:10810/323022026-06-18T09:23:17Z
dc.title.none.fl_str_mv Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
title Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
spellingShingle Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
Ruiz Emparanza, Álvaro
GFRP rebars
durability
bond
temperature
surface enhancement
title_short Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
title_full Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
title_fullStr Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
title_full_unstemmed Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
title_sort Evaluation of the Bond-to-Concrete Properties of GFRP Rebars in Marine Environments
dc.creator.none.fl_str_mv Ruiz Emparanza, Álvaro
De Caso y Basalo, Francisco J.
Kampmann, Raphael
Adarraga Usabiaga, María Iciar
author Ruiz Emparanza, Álvaro
author_facet Ruiz Emparanza, Álvaro
De Caso y Basalo, Francisco J.
Kampmann, Raphael
Adarraga Usabiaga, María Iciar
author_role author
author2 De Caso y Basalo, Francisco J.
Kampmann, Raphael
Adarraga Usabiaga, María Iciar
author2_role author
author
author
dc.subject.none.fl_str_mv GFRP rebars
durability
bond
temperature
surface enhancement
topic GFRP rebars
durability
bond
temperature
surface enhancement
description Increased traffic in combination with growing environmental impacts have led to the accelerated degradation of built infrastructure. In reinforced concrete structures, the corrosion of steel reinforcement is the predominant cause of deterioration. Thus, over the last years the use of glass fiber reinforced polymer (GFRP) composites as internal reinforcement bars (rebars) for concrete structures has been evaluated, and has been proved to be a viable alternative to traditional steel reinforcement mainly due to its tensile strength and non-corrosive nature. However, thus far, the GFRP rebar market is diverse and manufacturers around the world produce GFRP rebar types with different surface enhancements to improve the bond to concrete characteristics. In this study, the bond performance of three dissimilar GFRP rebar types (sand coated, helically grooved and with surface lugs) was evaluated over time in seawater environments, with a focus on the bond strength. Accordingly, specimens were exposed to seawater in circulating chambers at three different temperatures (23 °C, 40 °C and 60 °C) for multiple time periods (60 and 120 days). To evaluate the bond performance, pullout tests were conducted according to ASTM D7913. The results showed that the bond strength varied with the surface enhancement features. However, the bond strength did not vary significantly with exposure time and temperature for all three evaluated rebar types.
publishDate 2018
dc.date.none.fl_str_mv 2018
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10810/32302
url http://hdl.handle.net/10810/32302
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://www.mdpi.com/2412-3811/3/4/44
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/3.0/es/
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:Addi. Archivo Digital para la Docencia y la Investigación
instname:Universidad del País Vasco
instname_str Universidad del País Vasco
reponame_str Addi. Archivo Digital para la Docencia y la Investigación
collection Addi. Archivo Digital para la Docencia y la Investigación
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.228081

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