Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-year corrosion results

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Show simple item record Bautista Arija, María Asunción Álvarez, S. M. Paredes, E. C. Velasco López, Francisco Javier Guzmán, S. 2016-05-13T12:06:58Z 2016-10-01T22:00:08Z 2015-10-01
dc.identifier.bibliographicCitation Construction and building materials 95 (2015), 186-196
dc.identifier.issn 0950-0618
dc.description.abstract The corrosion behavior of 5 corrugated stainless steel bars was evaluated in carbonated mortars: UNS S20430, S30400, S31603, S31635 and S32205. The tests were carried out under 3 different exposure conditions: at high relative humidity (C-HRH); partially immersed in 3.5% NaCl (C-PD; and with CaCl2 added during mortar mixing and exposed to high relative humidity (C-HRHCl). Corrosion potential (Ecorr) measurements and electrochemical impedance spectroscopy (EIS) were used to monitor the behavior during the first 8 years of exposure. Then, anodic polarization tests were carried out and the exposure was extended for another additional year. Stainless steels do not corrode in carbonated conditions without chlorides, but some grades can suffer localized corrosion if they are submitted to high anodic polarizations. Low-Ni, austenitic S20430 corrugated bars are especially prone to suffer a low-intensity corrosive attack in carbonated mortars with chlorides. Moreover, the corrosion rate of S20430 bars can easily increase under moderate anodic polarizations. Duplex S32205 is immune to corrosion in the carbonated mortar with chlorides, even in partial immersion conditions and under high anodic polarizations.
dc.description.sponsorship The present work was funded by the Spanish Ministry of Science and Innovation through the Project reference BIA2007 66491 C02.
dc.format.extent 11
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier Ltd.
dc.rights © 2015 Elsevier Ltd.
dc.rights Attribution–NonCommercial–NoDerivs 4.0 International License
dc.subject.other Stainless steel
dc.subject.other Steel reinforced mortar
dc.subject.other Carbonation
dc.subject.other EIS
dc.subject.other Polarization
dc.subject.other Passivity
dc.subject.other Pitting corrosion
dc.title Corrugated stainless steels embedded in carbonated mortars with and without chlorides: 9-year corrosion results
dc.type article
dc.subject.eciencia Materiales
dc.identifier.doi 10.1016/j.conbuildmat.2015.07.099
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. BIA2007 66491 C02
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 186
dc.identifier.publicationlastpage 196
dc.identifier.publicationtitle Construction and building materials
dc.identifier.publicationvolume 95
dc.identifier.uxxi AR/0000017271
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