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dc.contributor.authorOliveira da Silva, Izelman
dc.contributor.authorPialarissi Cavalaro, Sergio Henrique
dc.contributor.authorAguado de Cea, Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria de la Construcció
dc.date.accessioned2014-11-19T17:22:52Z
dc.date.available2014-11-19T17:22:52Z
dc.date.created2014-11-17
dc.date.issued2014-11-17
dc.identifier.citationOliveira , I.; Pialarissi Cavalaro, S.H.; Aguado, A. Evolution of pyrrhotite oxidation in aggregates for concrete. "Materiales de construcción (Madrid)", 17 Novembre 2014, vol. 64, núm. 316.
dc.identifier.issn0465-2746
dc.identifier.urihttp://hdl.handle.net/2117/24782
dc.description.abstractRocks containing pyrrhotite bands are sometimes used to produce concrete. These rocks oxidize and produce long-term expansive reactions that damage concrete structures, leading to important economic and risk related repercussions. The present study analyses several aspects that affect the oxidation process of the aggregate such as the existence of preferential paths for the entrance of the oxidizing agent and the conversion process of the chemical elements involved in the reaction. For that, host rock samples containing pyrrhotite were investigated by scanning electron microscopy and energy dispersive spectroscopy. The results shows that the pyrrhotite appears in bands that create planes of weakness and present cracks that serve as preferential paths for the entrance of oxygen. Furthermore, a new representation is proposed for the oxidation process.
dc.language.isoeng
dc.rightsAttribution-NonCommercial 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó
dc.subject.lcshConcrete--Deterioration
dc.subject.lcshSulfates
dc.subject.otherIron sulfide
dc.subject.otherOxidation
dc.subject.otherAggregate
dc.subject.otherInternal sulfate attack
dc.subject.otherDam
dc.titleEvolution of pyrrhotite oxidation in aggregates for concrete
dc.typeArticle
dc.subject.lemacSulfats
dc.subject.lemacFormigó -- Deterioració
dc.contributor.groupUniversitat Politècnica de Catalunya. TE - Tecnologia d'Estructures
dc.identifier.doi10.3989/mc.2014.08413
dc.relation.publisherversionhttp://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/1670
dc.rights.accessOpen Access
drac.iddocument15285669
dc.description.versionPostprint (published version)
upcommons.citation.authorOliveira , I.; Pialarissi Cavalaro, S.H.; Aguado, A.
upcommons.citation.publishedtrue
upcommons.citation.publicationNameMateriales de construcción (Madrid)
upcommons.citation.volume64
upcommons.citation.number316


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