Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period

In the present work, the composition of a corroded reinforcing steel surface is studied at different pH values (related to different degrees of development in the corroding zones of the corrosion process) in solutions simulating chloride-contaminated environments. The media consid-ered consist of sa...

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Autores: Saura Gómez, Pascual, Zornoza, E., Andrade, C., Ferrándiz Mas, V., Garcés, P.
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Consejo General de la Arquitectura Técnica de España (CGATE)
Repositorio:RIARTE
OAI Identifier:oai:www.riarte.es:20.500.12251/2867
Acceso en línea:http://hdl.handle.net/20.500.12251/2867
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127027639&doi=10.3390%2fma15062216&partnerID=40&md5=9ceb9a0cc4b820f8f8a18c67a96ae04a
Access Level:acceso abierto
Palabra clave:Armaduras estructurales
Corrosión
Cloruros
Hormigón armado
Ensayos (propiedades o materiales)
Resistencia mecánica
3316.13 Productos de Acero Para Construcciones
3305.32 Ingeniería de Estructuras
3312.12 Ensayo de Materiales
3312.09 Resistencia de Materiales
3303.07 Tecnología de la Corrosión
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spelling Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation PeriodSaura Gómez, PascualZornoza, E.Andrade, C.Ferrándiz Mas, V.Garcés, P.Armaduras estructuralesCorrosiónClorurosHormigón armadoEnsayos (propiedades o materiales)Resistencia mecánica3316.13 Productos de Acero Para Construcciones3305.32 Ingeniería de Estructuras3312.12 Ensayo de Materiales3312.09 Resistencia de Materiales3303.07 Tecnología de la CorrosiónIn the present work, the composition of a corroded reinforcing steel surface is studied at different pH values (related to different degrees of development in the corroding zones of the corrosion process) in solutions simulating chloride-contaminated environments. The media consid-ered consist of saturated calcium hydroxide solutions, progressively neutralized with FeCl2 or by adding 0.5 M NaCl to the solution. The results found in present work confirm higher levels of acidity in the solutions with higher concentrations of Fe2+. In the present work, emphasis is given to the composition of the oxides in solutions that simulate the conditions that exist inside of a localized corrosion pit as a consequence of the reaction of chloride on reinforcing steel. The oxides were studied using Raman and XPS techniques; the results obtained with both techniques are mutually coherent. Thus, in the passive state, the oxides found are those reported previously by other authors, while in the corroding state, the present results are more comprehensive because the conditions tested studied a variety of pore solution composition with several pH values; we tried to reproduce these values inside the pits in conditions of heavy corrosion (very acidic). The oxides found are those typically produced during iron dissolution and seem not the best route to study the corrosion process of steel in concrete; the electrochemical tests better characterize the corrosion stage. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.MDPI2022info:eu-repo/semantics/articlehttp://hdl.handle.net/20.500.12251/2867https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127027639&doi=10.3390%2fma15062216&partnerID=40&md5=9ceb9a0cc4b820f8f8a18c67a96ae04areponame:RIARTEinstname:Consejo General de la Arquitectura Técnica de España (CGATE)Ingléshttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:www.riarte.es:20.500.12251/28672026-06-02T12:44:41Z
dc.title.none.fl_str_mv Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
title Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
spellingShingle Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
Saura Gómez, Pascual
Armaduras estructurales
Corrosión
Cloruros
Hormigón armado
Ensayos (propiedades o materiales)
Resistencia mecánica
3316.13 Productos de Acero Para Construcciones
3305.32 Ingeniería de Estructuras
3312.12 Ensayo de Materiales
3312.09 Resistencia de Materiales
3303.07 Tecnología de la Corrosión
title_short Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
title_full Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
title_fullStr Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
title_full_unstemmed Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
title_sort Composition of Corroded Reinforcing Steel Surface in Solutions Simulating the Electrolytic Environments in the Micropores of Concrete in the Propagation Period
dc.creator.none.fl_str_mv Saura Gómez, Pascual
Zornoza, E.
Andrade, C.
Ferrándiz Mas, V.
Garcés, P.
author Saura Gómez, Pascual
author_facet Saura Gómez, Pascual
Zornoza, E.
Andrade, C.
Ferrándiz Mas, V.
Garcés, P.
author_role author
author2 Zornoza, E.
Andrade, C.
Ferrándiz Mas, V.
Garcés, P.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Armaduras estructurales
Corrosión
Cloruros
Hormigón armado
Ensayos (propiedades o materiales)
Resistencia mecánica
3316.13 Productos de Acero Para Construcciones
3305.32 Ingeniería de Estructuras
3312.12 Ensayo de Materiales
3312.09 Resistencia de Materiales
3303.07 Tecnología de la Corrosión
topic Armaduras estructurales
Corrosión
Cloruros
Hormigón armado
Ensayos (propiedades o materiales)
Resistencia mecánica
3316.13 Productos de Acero Para Construcciones
3305.32 Ingeniería de Estructuras
3312.12 Ensayo de Materiales
3312.09 Resistencia de Materiales
3303.07 Tecnología de la Corrosión
description In the present work, the composition of a corroded reinforcing steel surface is studied at different pH values (related to different degrees of development in the corroding zones of the corrosion process) in solutions simulating chloride-contaminated environments. The media consid-ered consist of saturated calcium hydroxide solutions, progressively neutralized with FeCl2 or by adding 0.5 M NaCl to the solution. The results found in present work confirm higher levels of acidity in the solutions with higher concentrations of Fe2+. In the present work, emphasis is given to the composition of the oxides in solutions that simulate the conditions that exist inside of a localized corrosion pit as a consequence of the reaction of chloride on reinforcing steel. The oxides were studied using Raman and XPS techniques; the results obtained with both techniques are mutually coherent. Thus, in the passive state, the oxides found are those reported previously by other authors, while in the corroding state, the present results are more comprehensive because the conditions tested studied a variety of pore solution composition with several pH values; we tried to reproduce these values inside the pits in conditions of heavy corrosion (very acidic). The oxides found are those typically produced during iron dissolution and seem not the best route to study the corrosion process of steel in concrete; the electrochemical tests better characterize the corrosion stage. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.
publishDate 2022
dc.date.none.fl_str_mv 2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12251/2867
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127027639&doi=10.3390%2fma15062216&partnerID=40&md5=9ceb9a0cc4b820f8f8a18c67a96ae04a
url http://hdl.handle.net/20.500.12251/2867
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85127027639&doi=10.3390%2fma15062216&partnerID=40&md5=9ceb9a0cc4b820f8f8a18c67a96ae04a
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:RIARTE
instname:Consejo General de la Arquitectura Técnica de España (CGATE)
instname_str Consejo General de la Arquitectura Técnica de España (CGATE)
reponame_str RIARTE
collection RIARTE
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301603

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