A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides

Raman spectroscopy was used to characterise the corrosion products of reinforcing steel embedded in activated fly ash mortars in the presence of 0.4% and 2% chlorides. Two alkaline solutions with different soluble silica contents were utilised to activate the fly ash. Raman spectra were obtained usi...

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Detalles Bibliográficos
Autores: Criado Sanz, María, Martínez-Ramírez, S., Bastidas Rull, José María
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2015
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/121439
Acceso en línea:http://hdl.handle.net/10261/121439
Access Level:acceso abierto
Palabra clave:Raman spectroscopy
Alkali activation
Fly ash
Iron corrosion products
Chloride
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spelling A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chloridesCriado Sanz, MaríaMartínez-Ramírez, S.Bastidas Rull, José MaríaRaman spectroscopyAlkali activationFly ashIron corrosion productsChlorideRaman spectroscopy was used to characterise the corrosion products of reinforcing steel embedded in activated fly ash mortars in the presence of 0.4% and 2% chlorides. Two alkaline solutions with different soluble silica contents were utilised to activate the fly ash. Raman spectra were obtained using two excitation wavelengths (532 and 633 nm) and making power scans to select the suitable conditions of register for each wavelength. The main steel corrosion products identified were iron oxyhydroxides with low crystallinity, goethite (a-FeOOH) and lepidocrocite (c-FeOOH). These products need to be studied using a spectrometer with the laser line of 532 nm at low powers from 0.025 to 0.25 mW or a spectrometer with the laser line of 633 nm at high power between 2.5 and 25 mW.M. Criado expresses her gratitude to the Spanish Ministry of Science and Innovation for her Juan de la Cierva contract (Ref. JDC-2010). The authors express their gratitude to Project BIA2008-05398 from CICYT, Spain, for financial support. European Community and Comunidad de Madrid for supporting two Geomateriales programs S2013/MIT- 2014.Peer reviewedElsevierComunidad de MadridMinisterio de Ciencia e Innovación (España)European CommissionComisión Interministerial de Ciencia y Tecnología, CICYT (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201520152015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/121439reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#S2013/MIT-2014/GEOMATERIALS2http://dx.doi.org/10.1016/j.conbuildmat.2015.08.034Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1214392026-05-22T06:33:51Z
dc.title.none.fl_str_mv A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
title A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
spellingShingle A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
Criado Sanz, María
Raman spectroscopy
Alkali activation
Fly ash
Iron corrosion products
Chloride
title_short A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
title_full A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
title_fullStr A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
title_full_unstemmed A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
title_sort A Raman spectroscopy study of steel corrosion products in activated fly ash mortar containing chlorides
dc.creator.none.fl_str_mv Criado Sanz, María
Martínez-Ramírez, S.
Bastidas Rull, José María
author Criado Sanz, María
author_facet Criado Sanz, María
Martínez-Ramírez, S.
Bastidas Rull, José María
author_role author
author2 Martínez-Ramírez, S.
Bastidas Rull, José María
author2_role author
author
dc.contributor.none.fl_str_mv Comunidad de Madrid
Ministerio de Ciencia e Innovación (España)
European Commission
Comisión Interministerial de Ciencia y Tecnología, CICYT (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Raman spectroscopy
Alkali activation
Fly ash
Iron corrosion products
Chloride
topic Raman spectroscopy
Alkali activation
Fly ash
Iron corrosion products
Chloride
description Raman spectroscopy was used to characterise the corrosion products of reinforcing steel embedded in activated fly ash mortars in the presence of 0.4% and 2% chlorides. Two alkaline solutions with different soluble silica contents were utilised to activate the fly ash. Raman spectra were obtained using two excitation wavelengths (532 and 633 nm) and making power scans to select the suitable conditions of register for each wavelength. The main steel corrosion products identified were iron oxyhydroxides with low crystallinity, goethite (a-FeOOH) and lepidocrocite (c-FeOOH). These products need to be studied using a spectrometer with the laser line of 532 nm at low powers from 0.025 to 0.25 mW or a spectrometer with the laser line of 633 nm at high power between 2.5 and 25 mW.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/121439
url http://hdl.handle.net/10261/121439
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
S2013/MIT-2014/GEOMATERIALS2
http://dx.doi.org/10.1016/j.conbuildmat.2015.08.034
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812455

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