Приказ основних података о документу

dc.creatorKomljenović, Miroslav M
dc.creatorBaščarević, Zvezdana
dc.creatorNikolić, Violeta
dc.date.accessioned2022-04-05T14:27:14Z
dc.date.available2022-04-05T14:27:14Z
dc.date.issued2010
dc.identifier.issn0304-3894
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/430
dc.description.abstractThis paper investigates the properties of geopolymer obtained by alkali-activation of fly ash (FA), i.e. the influence of characteristics of the representative group of FA (class F) from Serbia, as well as that of the nature and concentration of various activators on mechanical and microstructural properties of geopolymers. Aqueous solutions of Ca(OH)(2), NaOH, NaOH + Na2CO3, KOH and sodium silicate (water glass) of various concentrations were used as alkali activators. It was established that the nature and concentration of the activator was the most dominant parameter in the alkali-activation process. In respect of physical characteristics of FA, the key parameter was fineness. The geopolymer based on FA with the highest content of fine particles ( lt 43 mu m), showed the highest compressive strength in all cases. Regardless of FA characteristics, nature and concentration of the activator, the alkali-activation products were mainly amorphous. The formation of crystalline phases (zeolites) occurred in some cases, depending on the reaction conditions. The highest compressive strength was obtained using sodium silicate. Together with the increase of sodium silicate SiO2/Na2O mass ratio, the atomic Si/Al ratio in the reaction products was also increased. Under the experimental conditions of this investigation, high strength was directly related to the high Si/Al ratio.en
dc.publisherElsevier, Amsterdam
dc.relationinfo:eu-repo/grantAgreement/MESTD/MPN2006-2010/19001/RS//
dc.rightsrestrictedAccess
dc.sourceJournal of Hazardous Materials
dc.subjectGeopolymeren
dc.subjectFly ashen
dc.subjectAlkali activationen
dc.titleMechanical and microstructural properties of alkali-activated fly ash geopolymersen
dc.typearticle
dc.rights.licenseARR
dc.citation.epage42
dc.citation.issue1-3
dc.citation.other181(1-3): 35-42
dc.citation.rankaM21
dc.citation.spage35
dc.citation.volume181
dc.identifier.doi10.1016/j.jhazmat.2010.04.064
dc.identifier.pmid20554110
dc.identifier.scopus2-s2.0-77954535464
dc.identifier.wos000280601300005
dc.type.versionpublishedVersion


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Приказ основних података о документу