Rebar corrosion in mortars with high limestone filler content

Autores
Batic, O. R.; Sota, J. D.; Fernández, J. L.; Bellotti, Natalia; Romagnoli, Roberto
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Purpose – This research aims to study the influence of limestone filler on rebar corrosion. Design/methodology/approach – Mortar samples containing 35% calcareous filler and with a rebar inserted in the axis, were cast. Specimens were cured at the open air and during 28 days in lime water. After curing, they were submerged in two electrolytes (tap water and 3% NaCl) and corrosion parameters (corrosion potential and corrosion current) were monitored over time by d.c. techniques. Simultaneously, electrochemical noise measurements were carried out. After corrosion tests, rebars were pulled out by lateral compression, and their surface observed by scanning electron microscopy. Findings – In general, carbonate additions impaired mortar protective properties, especially in the presence of chloride and changed the nature of the protective layer on rebars. The curing process did not introduce significant differences except for mortars with a high water cement ratio cured in lime water for which the beneficial effects of the simultaneous presence of carbonate and lime in the pore solution could be appreciated. The role of carbonate additions is to provide carbonate anions to passivate rebars. This passivation process caused corrosion rates not to be so high. Carbonate anions also deposited on oxide spots which were rendered passive but this process was not uniform. Certain areas on the rebar underwent intense carbonation while others showed increased corrosion rates. Originality/value – There are not many corrosion studies about the influence of limestone filler on rebars corrosion. Particularly, this paper deals with mortars containing high percentages of carbonate additions. Results showed that the presence of this type of admixture changes the structure of the passive layer and, sometimes, may increase corrosion rates.
Fil: Batic, O. R.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; Argentina
Fil: Sota, J. D.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; Argentina
Fil: Fernández, J. L.. Universidad Nacional del Comahue; Argentina
Fil: Bellotti, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); Argentina
Fil: Romagnoli, Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); Argentina
Materia
Corrosión
Morteros
Filler Calcáreo
Corrosión de Armaduras
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/11264
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/11264
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Rebar corrosion in mortars with high limestone filler contentBatic, O. R.Sota, J. D.Fernández, J. L.Bellotti, NataliaRomagnoli, RobertoCorrosiónMorterosFiller CalcáreoCorrosión de Armadurashttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Purpose – This research aims to study the influence of limestone filler on rebar corrosion. Design/methodology/approach – Mortar samples containing 35% calcareous filler and with a rebar inserted in the axis, were cast. Specimens were cured at the open air and during 28 days in lime water. After curing, they were submerged in two electrolytes (tap water and 3% NaCl) and corrosion parameters (corrosion potential and corrosion current) were monitored over time by d.c. techniques. Simultaneously, electrochemical noise measurements were carried out. After corrosion tests, rebars were pulled out by lateral compression, and their surface observed by scanning electron microscopy. Findings – In general, carbonate additions impaired mortar protective properties, especially in the presence of chloride and changed the nature of the protective layer on rebars. The curing process did not introduce significant differences except for mortars with a high water cement ratio cured in lime water for which the beneficial effects of the simultaneous presence of carbonate and lime in the pore solution could be appreciated. The role of carbonate additions is to provide carbonate anions to passivate rebars. This passivation process caused corrosion rates not to be so high. Carbonate anions also deposited on oxide spots which were rendered passive but this process was not uniform. Certain areas on the rebar underwent intense carbonation while others showed increased corrosion rates. Originality/value – There are not many corrosion studies about the influence of limestone filler on rebars corrosion. Particularly, this paper deals with mortars containing high percentages of carbonate additions. Results showed that the presence of this type of admixture changes the structure of the passive layer and, sometimes, may increase corrosion rates.Fil: Batic, O. R.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; ArgentinaFil: Sota, J. D.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; ArgentinaFil: Fernández, J. L.. Universidad Nacional del Comahue; ArgentinaFil: Bellotti, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); ArgentinaFil: Romagnoli, Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); ArgentinaEmerald Group Publishing Limited2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/11264Batic, O. R.; Sota, J. D.; Fernández, J. L.; Bellotti, Natalia; Romagnoli, Roberto; Rebar corrosion in mortars with high limestone filler content; Emerald Group Publishing Limited; Anti-corrosion Methods And Materials; 60; 1; 1-2013; 3-130003-5599enginfo:eu-repo/semantics/altIdentifier/doi/10.1108/00035591311287393info:eu-repo/semantics/altIdentifier/url/http://www.emeraldinsight.com/doi/abs/10.1108/00035591311287393info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:54:50Zoai:ri.conicet.gov.ar:11336/11264instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:54:51.153CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Rebar corrosion in mortars with high limestone filler content
title Rebar corrosion in mortars with high limestone filler content
spellingShingle Rebar corrosion in mortars with high limestone filler content
Batic, O. R.
Corrosión
Morteros
Filler Calcáreo
Corrosión de Armaduras
title_short Rebar corrosion in mortars with high limestone filler content
title_full Rebar corrosion in mortars with high limestone filler content
title_fullStr Rebar corrosion in mortars with high limestone filler content
title_full_unstemmed Rebar corrosion in mortars with high limestone filler content
title_sort Rebar corrosion in mortars with high limestone filler content
dc.creator.none.fl_str_mv Batic, O. R.
Sota, J. D.
Fernández, J. L.
Bellotti, Natalia
Romagnoli, Roberto
author Batic, O. R.
author_facet Batic, O. R.
Sota, J. D.
Fernández, J. L.
Bellotti, Natalia
Romagnoli, Roberto
author_role author
author2 Sota, J. D.
Fernández, J. L.
Bellotti, Natalia
Romagnoli, Roberto
author2_role author
author
author
author
dc.subject.none.fl_str_mv Corrosión
Morteros
Filler Calcáreo
Corrosión de Armaduras
topic Corrosión
Morteros
Filler Calcáreo
Corrosión de Armaduras
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Purpose – This research aims to study the influence of limestone filler on rebar corrosion. Design/methodology/approach – Mortar samples containing 35% calcareous filler and with a rebar inserted in the axis, were cast. Specimens were cured at the open air and during 28 days in lime water. After curing, they were submerged in two electrolytes (tap water and 3% NaCl) and corrosion parameters (corrosion potential and corrosion current) were monitored over time by d.c. techniques. Simultaneously, electrochemical noise measurements were carried out. After corrosion tests, rebars were pulled out by lateral compression, and their surface observed by scanning electron microscopy. Findings – In general, carbonate additions impaired mortar protective properties, especially in the presence of chloride and changed the nature of the protective layer on rebars. The curing process did not introduce significant differences except for mortars with a high water cement ratio cured in lime water for which the beneficial effects of the simultaneous presence of carbonate and lime in the pore solution could be appreciated. The role of carbonate additions is to provide carbonate anions to passivate rebars. This passivation process caused corrosion rates not to be so high. Carbonate anions also deposited on oxide spots which were rendered passive but this process was not uniform. Certain areas on the rebar underwent intense carbonation while others showed increased corrosion rates. Originality/value – There are not many corrosion studies about the influence of limestone filler on rebars corrosion. Particularly, this paper deals with mortars containing high percentages of carbonate additions. Results showed that the presence of this type of admixture changes the structure of the passive layer and, sometimes, may increase corrosion rates.
Fil: Batic, O. R.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; Argentina
Fil: Sota, J. D.. Laboratorio de Entrenamiento Multidisciplinario e Investigaciones Tecnológicas; Argentina
Fil: Fernández, J. L.. Universidad Nacional del Comahue; Argentina
Fil: Bellotti, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); Argentina
Fil: Romagnoli, Roberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Centro de Investigación y Desarrollo En Tecnología de Pinturas (i); Argentina
description Purpose – This research aims to study the influence of limestone filler on rebar corrosion. Design/methodology/approach – Mortar samples containing 35% calcareous filler and with a rebar inserted in the axis, were cast. Specimens were cured at the open air and during 28 days in lime water. After curing, they were submerged in two electrolytes (tap water and 3% NaCl) and corrosion parameters (corrosion potential and corrosion current) were monitored over time by d.c. techniques. Simultaneously, electrochemical noise measurements were carried out. After corrosion tests, rebars were pulled out by lateral compression, and their surface observed by scanning electron microscopy. Findings – In general, carbonate additions impaired mortar protective properties, especially in the presence of chloride and changed the nature of the protective layer on rebars. The curing process did not introduce significant differences except for mortars with a high water cement ratio cured in lime water for which the beneficial effects of the simultaneous presence of carbonate and lime in the pore solution could be appreciated. The role of carbonate additions is to provide carbonate anions to passivate rebars. This passivation process caused corrosion rates not to be so high. Carbonate anions also deposited on oxide spots which were rendered passive but this process was not uniform. Certain areas on the rebar underwent intense carbonation while others showed increased corrosion rates. Originality/value – There are not many corrosion studies about the influence of limestone filler on rebars corrosion. Particularly, this paper deals with mortars containing high percentages of carbonate additions. Results showed that the presence of this type of admixture changes the structure of the passive layer and, sometimes, may increase corrosion rates.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/11264
Batic, O. R.; Sota, J. D.; Fernández, J. L.; Bellotti, Natalia; Romagnoli, Roberto; Rebar corrosion in mortars with high limestone filler content; Emerald Group Publishing Limited; Anti-corrosion Methods And Materials; 60; 1; 1-2013; 3-13
0003-5599
url http://hdl.handle.net/11336/11264
identifier_str_mv Batic, O. R.; Sota, J. D.; Fernández, J. L.; Bellotti, Natalia; Romagnoli, Roberto; Rebar corrosion in mortars with high limestone filler content; Emerald Group Publishing Limited; Anti-corrosion Methods And Materials; 60; 1; 1-2013; 3-13
0003-5599
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1108/00035591311287393
info:eu-repo/semantics/altIdentifier/url/http://www.emeraldinsight.com/doi/abs/10.1108/00035591311287393
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Emerald Group Publishing Limited
publisher.none.fl_str_mv Emerald Group Publishing Limited
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.238319

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