Effect of Ultrafine Additives on the Morphology of Cement Hydration Products

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dc.contributor.authorYakovlev, G.I.cs
dc.contributor.authorDrochytka, Rostislavcs
dc.contributor.authorSKRIPKIUNAS, Gintautascs
dc.contributor.authorUrkhanova, Larisacs
dc.contributor.authorPolyanskikh, Irinacs
dc.contributor.authorPudov, Igorcs
dc.contributor.authorKARPOVA, Ekaterinacs
dc.contributor.authorSaidova, Zarinacs
dc.contributor.authorElrefai, Ali E. M. M.cs
dc.coverage.issue8cs
dc.coverage.volume11cs
dc.date.issued2021-08-22cs
dc.description.abstractThe present research is focused on the investigation of the influence of ultrafine additives on the structure formation of hardened cement paste and the establishment of the mechanisms of the morphological transformations, which determine the properties of hydrated products. In the course of the research, the modification of ordinary Portland cement was performed by the suspension of multi-walled carbon nanotubes (MWCNTs), carbon black (CB) paste, and silica fume (SF). Scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) microanalysis, X-ray diffraction (XRD) analysis, thermal analysis, and Fourier-transform infrared (FTIR) spectroscopy were used to study cement hydration products. The morphology of hardened cement paste depends on the chemical reactivity of additives, their geometry, and their genesis. The action mechanism of the inert carbon-based additives and pozzolanic silica fume were considered. The cement hydration products formed in the process of modification by both types of ultrafine additives are described. In the case of the modification of cement paste by inert MWCNTs and CB paste, the formation of cement hydration products on their surface without strong adhesion was observed, whereas in the case of the addition of SF separately and together with MWCNTs, the strong adhesion of additives and cement hydration products was noted.en
dc.formattextcs
dc.format.extent1002-1022cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationCrystals. 2021, vol. 11, issue 8, p. 1002-1022.en
dc.identifier.doi10.3390/cryst11081002cs
dc.identifier.issn2073-4352cs
dc.identifier.orcid0000-0002-7123-1338cs
dc.identifier.other172338cs
dc.identifier.urihttp://hdl.handle.net/11012/201478
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofCrystalscs
dc.relation.urihttps://www.mdpi.com/2073-4352/11/8/1002cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2073-4352/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectcementen
dc.subjectultrafine additivesen
dc.subjectcarbon blacken
dc.subjectcarbon nanotubesen
dc.subjectsilica fumeen
dc.subjectcement hydration productsen
dc.titleEffect of Ultrafine Additives on the Morphology of Cement Hydration Productsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-172338en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:45:56en
sync.item.modts2025.01.17 16:43:07en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav technologie stavebních hmot a dílcůcs
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