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dc.rights.licenseAtribución-NoComercial 4.0 Internacional
dc.contributor.authorAperador Chaparro, William
dc.contributor.authorVera López, Enrique
dc.contributor.authorMejía de Gutiérrez, Ruby
dc.date.accessioned2019-06-28T09:36:31Z
dc.date.available2019-06-28T09:36:31Z
dc.date.issued2012
dc.identifier.urihttps://repositorio.unal.edu.co/handle/unal/40598
dc.description.abstractThis paper presents an experimental study on the corrosion resistance of a steel bar embedded in an alkali-activated slag (AAS) concrete in which it was exposed to an accelerated carbonation test (3% CO2, 65% relative humidity (RH), and 25 ºC) and then tested under complete immersion in 3.5 wt. % NaCl solution. Ordinary Portland cement (OPC) was also tested for comparative purposes and was exposed to identical experimental conditions. The monitoring of open-circuit potential, the linear polarization resistance technique, and the electrochemical impedance spectroscopy (EIS), were used to evaluate the corrosion behavior of the steel bar. Corrosion resistance of carbonated AAS and OPC concretes was tested at different times. We carried out an exposure test of a solution containing Cl ions with all series for 0, 3, 6, 9, and 12 months. Electrochemical measurements show that AAS concrete presents depassivation of the steel embedded in concrete where it is exposed to accelerated carbonation; after this period of time, corrosion resistance decreased due to the presence of chlorides at the steel/AAS interface.
dc.format.mimetypeapplication/pdf
dc.language.isospa
dc.publisherUniversidad Nacional de Colombia Sede Medellín
dc.relationhttp://revistas.unal.edu.co/index.php/dyna/article/view/29573
dc.relation.ispartofUniversidad Nacional de Colombia Revistas electrónicas UN Dyna
dc.relation.ispartofDyna
dc.relation.ispartofseriesDyna; Vol. 79, núm. 171 (2012); 80-87 DYNA; Vol. 79, núm. 171 (2012); 80-87 2346-2183 0012-7353
dc.rightsDerechos reservados - Universidad Nacional de Colombia
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/
dc.titleCorrosion behavior of steel bar embedded in alkali-activated slag concrete subjected to carbonation and chloride attack
dc.typeArtículo de revista
dc.type.driverinfo:eu-repo/semantics/article
dc.type.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.eprintshttp://bdigital.unal.edu.co/30695/
dc.relation.referencesAperador Chaparro, William and Vera López, Enrique and Mejía de Gutiérrez, Ruby (2012) Corrosion behavior of steel bar embedded in alkali-activated slag concrete subjected to carbonation and chloride attack. Dyna; Vol. 79, núm. 171 (2012); 80-87 DYNA; Vol. 79, núm. 171 (2012); 80-87 2346-2183 0012-7353 .
dc.rights.accessrightsinfo:eu-repo/semantics/openAccess
dc.subject.proposalalkali-activated cement
dc.subject.proposalchloride ion
dc.subject.proposalelectrochemical measurements
dc.type.coarhttp://purl.org/coar/resource_type/c_6501
dc.type.coarversionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.contentText
dc.type.redcolhttp://purl.org/redcol/resource_type/ART
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2


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Atribución-NoComercial 4.0 InternacionalThis work is licensed under a Creative Commons Reconocimiento-NoComercial 4.0.This document has been deposited by the author (s) under the following certificate of deposit