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dc.date.accessioned 2016-10-25T12:29:23Z
dc.date.available 2016-10-25T12:29:23Z
dc.identifier.uri http://digital.cic.gba.gob.ar/handle/11746/4494
dc.title An expansive dolostone from Argentina en
dc.type Documento de conferencia es
dcterms.abstract Alkali-carbonate reaction is a known harmful reaction that affects concrete durability and constitutes an issue of much controversy between researchers and concrete technologists. Since 1991, the authors have been working in this field to evaluate the possibility of the occurrence of this reaction in Argentina. The studies have shown the existence of a fine-grained dolostone that reacts deleteriously with concrete alkalis following a mechanism similar to ACR. This dolostone has two distinctive characteristics. First of all, the rock shows a clear dedolomitization reaction producing calcite and brucite (no siliceous gel was observed in thin sections). Secondly, the use of known mineral admixtures (fly ash, silica fume, ground granulated blast-furnace slag, natural pozzolan) or lithium compounds does not mitigate concrete expansion. This paper summarizes the results obtained with this dolomitic rock using current characterization techniques (ASTM C 586, ASTM C 227, NBRI, concrete prism expansion test, and polarization microscopy). es
dcterms.extent 10 p. es
dcterms.issued 2012
dcterms.language Inglés es
dcterms.license Attribution 4.0 International (BY 4.0) es
dcterms.subject alkali-carbonate reaction en
dcterms.subject dedolomitization en
dcterms.subject mineral admixture en
dcterms.subject lithium en
cic.version info:eu-repo/semantics/submittedVersion es
dcterms.creator.author Milanesi, Carlos Alberto es
dcterms.creator.author Marfil, Silvina Andrea es
dcterms.creator.author Maiza, Pedro es
dcterms.creator.author Batic, Oscar R. es
cic.lugarDesarrollo Centro de Geología Aplicada, Agua y Medio Ambiente es
dcterms.subject.materia Geología es
dcterms.isPartOf.issue XIV International Conference on Alkali-Aggregate Reactions es
dcterms.isPartOf.series International Conference on Alkali-Aggregate Reactions es
cic.isPeerReviewed true es
cic.isFulltext true es
dcterms.title.subtitle The common dilemma: ACR or another variant of ASR? en


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