Phase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGA

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dc.contributor.authorKuzielova, Evacs
dc.contributor.authorSlaný, Michalcs
dc.contributor.authorŽemlička, Matúšcs
dc.contributor.authorMásilko, Jiřícs
dc.contributor.authorPalou, Martincs
dc.coverage.issue11cs
dc.coverage.volume14cs
dc.date.accessioned2022-04-04T10:54:13Z
dc.date.available2022-04-04T10:54:13Z
dc.date.issued2021-05-24cs
dc.description.abstractTwo substitution levels of Portland cement by silica fume (SF; 30 and 50 mass%) and three hydrothermal treatment regimes (0.5, 1.2, and 2 MPa and 165, 195, and 220 degrees C for 7 days, respectively) were selected for the investigation of high-temperature phase formation. A combination of thermogravimetric, X-ray diffraction, and Fourier transform infrared analyses in the mid-IR region was used to overcome the shortcomings of individual techniques for the identification of these complex systems. Changes in molecular water amounts, the polymerization degree of silicate chains, or their decomposition due to transformations and crystallization of phases at hydrothermal conditions were observed and discussed concerning composition. Contrary to the calciochondrite, hydrogrossular phases, alpha-C2SH, and jaffeite detected in the systems without SF, a decrease in CaO/SiO2 ratio resulted in the formation of stable tobermorite in the case of 30 mass% SF, whilst calcium hydrogen silicate, gyrolite, and cowlesite were identified as more thermally stable phases in the samples with 50 mass% SF.en
dc.formattextcs
dc.format.extent1-18cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2021, vol. 14, issue 11, p. 1-18.en
dc.identifier.doi10.3390/ma14112786cs
dc.identifier.issn1996-1944cs
dc.identifier.other176825cs
dc.identifier.urihttp://hdl.handle.net/11012/204075
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/14/11/2786cs
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.subjecthydrothermal curingen
dc.subjectsilica fumeen
dc.subjectFTIRen
dc.titlePhase Composition of Silica Fume-Portland Cement Systems Formed under Hydrothermal Curing Evaluated by FTIR, XRD, and TGAen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-176825en
sync.item.dbtypeVAVen
sync.item.insts2022.04.04 12:54:12en
sync.item.modts2022.04.04 12:15:06en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
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