Zeolite crystallization in portland cement concrete due to alkali-aggregate reaction

cic.institucionOrigenCentro de Geología Aplicada, Agua y Medio Ambientees
cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloCentro de Geología Aplicada, Agua y Medio Ambientees
cic.versioninfo:eu-repo/semantics/publishedVersiones
dc.date.accessioned2019-08-28T17:15:24Z
dc.date.available2019-08-28T17:15:24Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/10235
dc.titleZeolite crystallization in portland cement concrete due to alkali-aggregate reactionen
dc.typeArtículoes
dcterms.abstractConcrete used in works and altered by alkali-aggregate reaction was studied in order to identify the reaction products. For this purpose, the methods of petrographic microscopy, XRD and SEM were employed. The crystalline forms observed by SEM were later determined through the petrographic microscope, as being zeolites on the basis of their optical properties and confirmed by XRD. In order to obtain a minimum amount (10 mg) of the reaction product, many thin sections were prepared. The product was isolated under the microscope for XRD analysis, through which it was identified as being a zeolite (heulandite-clinoptilolite group). With the aim of determining the minimum limits capable of being registered by XRD, tests with the addition of 1, 5 and 10 % of a similar natural zeolite (clinoptilolite) were also performed on a concrete sample, showing that 5 % is about the minimum.en
dcterms.creator.authorMarfil, Silvina Andreaes
dcterms.creator.authorMaiza, Pedroes
dcterms.extentp. 1283-1288es
dcterms.identifier.otherdoi:10.1016/0008-8846(93)90066-Ies
dcterms.identifier.otherISSN: 0008-8846es
dcterms.isPartOf.issuevol. 23, no. 6es
dcterms.isPartOf.seriesCement and Concrete Researches
dcterms.issued1993-11
dcterms.languageIngléses
dcterms.licenseAttribution-NonCommercial-ShareAlike 4.0 International (BY-NC-SA 4.0)es
dcterms.subjectconcreteen
dcterms.subjectalkali-aggregate reactionen
dcterms.subjectXRD analysisen
dcterms.subject.materiaGeologíaes

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