Thermal behaviour of metakaolin/fly ash geopolymers with chamotte aggregate

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dc.contributor.authorRovnaník, Pavelcs
dc.contributor.authorHalasová, Kristýnacs
dc.coverage.issue9cs
dc.coverage.volume2016cs
dc.date.accessioned2020-08-04T11:01:35Z
dc.date.available2020-08-04T11:01:35Z
dc.date.issued2016-06-30cs
dc.description.abstractGeopolymers are generally appreciated for their good resistance against high temperatures. This paper compares the influence of thermal treatment with temperatures ranging from 200–1200 °C on the mechanical properties and microstructure of geopolymers based on two different aluminosilicate precursors, metakaolin and fly ash. Moreover, the paper is also aimed at characterizing the effect of chamotte aggregate on the performance of geopolymers subjected to high temperatures. Thermal treatment leads to a deterioration in the strength of metakaolin geopolymer, whereas fly ash geopolymer gains strength upon heating. The formation of albite above 900 °C is responsible for the fusion of geopolymer matrix during exposure to 1200 °C, which leads to the deformation of the geopolymer samples. Chamotte aggregate improves the performance of geopolymer material by increasing the thermal stability of geopolymers via sintering of the aggregate particles with the geopolymer matrix in the contact zone.en
dc.formattextcs
dc.format.extent1-13cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2016, vol. 2016, issue 9, p. 1-13.en
dc.identifier.doi10.3390/ma9070535cs
dc.identifier.issn1996-1944cs
dc.identifier.other126891cs
dc.identifier.urihttp://hdl.handle.net/11012/62268
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttp://www.mdpi.com/1996-1944/9/7/535cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectgeopolymeren
dc.subjectfly ashen
dc.subjectmetakaolinen
dc.subjecthigh temperaturesen
dc.subjectchamotteen
dc.subjectmicrostructureen
dc.titleThermal behaviour of metakaolin/fly ash geopolymers with chamotte aggregateen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-126891en
sync.item.dbtypeVAVen
sync.item.insts2020.08.04 13:01:35en
sync.item.modts2020.08.04 12:21:52en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav chemiecs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. AdMaS Divize TSHcs
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