Na2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutions

cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloCentro de Geología Aplicada, Agua y Medio Ambiente es
cic.versioninfo:eu-repo/semantics/submittedVersiones
dc.date.accessioned2016-10-13T13:58:56Z
dc.date.available2016-10-13T13:58:56Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/4422
dc.titleNa2O, K2O, SiO2 and Al2O3 release from potassic and calcic–sodic feldspars into alkaline solutionsen
dc.typeArtículoes
dcterms.abstractThe potential release of elements from potassic and calcic–sodic feldspars into the concrete pore solution was evaluated by ICP-MS using 1 N NaOH and KOH solutions at 80 °C in accordance with the conditions set in the chemical test method. Materials were characterized by petrography, XRD and by XRF analysis. The influence of textural and microstructural characteristics on the leaching process was also analyzed by immersing polished plates of each mineral in 1 N NaOH at 80 °C for 7 days. Optical microscope and SEM observations indicate that microstructural characteristics, such as cleavage zones, twins, grain–grain contact and the finer and less abundant phases in perthites, play a key role in the leaching process under alkaline conditions. Na2O, K2O, SiO2 and Al2O3 are supplied by hydrolysis, although the participation of other processes cannot be ruled out.en
dcterms.creator.authorLocati, Franciscoes
dcterms.creator.authorMarfil, Silvina Andreaes
dcterms.creator.authorBaldo, Edgardoes
dcterms.creator.authorMaiza, Pedroes
dcterms.extent9 p.es
dcterms.isPartOf.issuevol. 40es
dcterms.isPartOf.seriesCement and Concrete Researches
dcterms.issued2010
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectC. Alkali releaseen
dcterms.subjectD. Feldsparsen
dcterms.subjectB. Microstructureen
dcterms.subjectD. Alkalisen
dcterms.subjectC. Alkali–aggregate reactionen
dcterms.subject.materiaGeologíaes

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