Hydration kinetics of C3A: effect of lithium, copper and sulfur-based mineralizers

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dc.contributor.authorBartoníčková, Evacs
dc.contributor.authorPtáček, Petrcs
dc.contributor.authorNovotný, Radoslavcs
dc.contributor.authorPalovčík, Jakubcs
dc.contributor.authorMásilko, Jiřícs
dc.contributor.authorŠvec, Jiřícs
dc.contributor.authorSedlačík, Martincs
dc.contributor.authorKoplík, Jancs
dc.contributor.authorStaněk, Theodorcs
dc.contributor.authorHemzal, Dušancs
dc.coverage.issueSeptembercs
dc.coverage.volume150cs
dc.date.accessioned2025-06-13T11:55:56Z
dc.date.available2025-06-13T11:55:56Z
dc.date.issued2024-09-16cs
dc.description.abstractCalcium aluminate phases have a particular effect on the early heat release during setting initiation and have a substantial influence on the further workability of ordinary Portland cement. The nature of the calcium aluminate hydration products and its kinetics strongly depends on sulfate content and humidity. The effect of mineralisers on melt formation and viscosity is well described for calcium silicate systems, but information is still lacking for calcium aluminates. Therefore, the synergistic effect on the crystal structure and hydration mechanism of the tricalcium aluminate phase of the addition of mineralizers, i.e. Li2O, CuO, SO3 to the raw meal is here investigated. Co-doped calcium aluminate structures were formed during high-temperature treatment. Thermal analysis (TG-DTA and heating microscopy) was used to describe the ongoing high-temperature reaction. Resulting phase composition was dependent on the concentration of the mineralizer. While phase pure system was prepared with low mineralizer concentrations, with increasing mineralizer content the secondary phases were formed. Raman spectroscopy and XPS analysis were used to investigate the cation substitution and to help describe the cations bonding in co-doped calcium aluminate system. Prepared powders have been hydrated in a controlled manner at different temperatures (288, 298, 308 K). The resulting calorimetric data have been used to investigate the hydration kinetics and determine the rate constant of hydration reaction. First-order reaction (FOR) model was here applied for the activation energy and frequency factor calculations. The metastable and stable calcium aluminate hydrates were formed according to initial phase composition. In phase pure systems with low S content, the formation of stable and metastable hydrates was depended on the reaction temperature. Conversely, in systems with secondary phases and higher S content, the hydration mechanism resembled that which appears in calcium sulfoaluminates.en
dc.formattextcs
dc.format.extent1119-1135cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Thermal Analysis and Calorimetry. 2024, vol. 150, issue September, p. 1119-1135.en
dc.identifier.doi10.1007/s10973-024-13525-6cs
dc.identifier.issn1388-6150cs
dc.identifier.orcid0000-0002-5866-7946cs
dc.identifier.orcid0000-0003-0586-7693cs
dc.identifier.orcid0000-0002-1809-5875cs
dc.identifier.orcid0000-0001-6070-573Xcs
dc.identifier.orcid0000-0001-9587-5843cs
dc.identifier.orcid0000-0002-2943-9864cs
dc.identifier.orcid0000-0002-4641-2081cs
dc.identifier.orcid0000-0002-4219-4267cs
dc.identifier.other190099cs
dc.identifier.researcheridAAY-4689-2020cs
dc.identifier.researcheridQ-1628-2018cs
dc.identifier.scopus25621179000cs
dc.identifier.scopus57188564285cs
dc.identifier.scopus25621858200cs
dc.identifier.scopus56338516900cs
dc.identifier.scopus25621490100cs
dc.identifier.urihttps://hdl.handle.net/11012/252346
dc.language.isoencs
dc.publisherSpringer Naturecs
dc.relation.ispartofJournal of Thermal Analysis and Calorimetrycs
dc.relation.urihttps://link.springer.com/article/10.1007/s10973-024-13525-6cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1388-6150/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectC(3)ASynthesisHydrationIsothermal calorimetryKineticsActivation energyen
dc.titleHydration kinetics of C3A: effect of lithium, copper and sulfur-based mineralizersen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.grantNumberinfo:eu-repo/grantAgreement/GA0/GA/GA23-05082Scs
sync.item.dbidVAV-190099en
sync.item.dbtypeVAVen
sync.item.insts2025.06.13 13:55:56en
sync.item.modts2025.06.13 13:33:01en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
thesis.grantorVysoké učení technické v Brně. . Výzkumný ústav stavebních hmot, a.s.cs
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