Effect of siliceous sand volume fraction on the properties of alkali-activated slag mortars

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dc.contributor.authorHajzler, Jancs
dc.contributor.authorBílek, Vlastimilcs
dc.contributor.authorKejík, Marekcs
dc.contributor.authorKucharczyková, Barbaracs
dc.coverage.issue1cs
dc.coverage.volume2568cs
dc.date.accessioned2024-02-19T11:46:13Z
dc.date.available2024-02-19T11:46:13Z
dc.date.issued2023-08-17cs
dc.description.abstractOne of the critical factors affecting the performance of alkali-activated slag (AAS) is the nature and dose of alkali activator. The activator type can play a significant role during the transition from pastes to mortars or concretes. Therefore, three basic sodium activators (water glass, carbonate, and hydroxide) of the same molarity of 4M Na+ were used to prepare AAS-based mortars with different volume fractions of siliceous sand. These were compared by means of workability, mechanical strength, and long-term shrinkage under autogenous conditions. The results were compared to those obtained on pastes with similar workability. Increasing the content of the sand tended rather to decrease the mechanical properties, while greatly decreased autogenous shrinkage. Nevertheless, the most remarkable differences for different activators were observed when comparing the mortars with pastes. The transition from pastes to mortars resulted in the highest reduction in both compressive and flexural strength for sodium hydroxide. The flexural strength of the mortars with sodium water glass and sodium carbonate even increased considerably in presence of sand.en
dc.formattextcs
dc.format.extent1-7cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationJournal of Physics: Conference Series. 2023, vol. 2568, issue 1, p. 1-7.en
dc.identifier.doi10.1088/1742-6596/2568/1/012010cs
dc.identifier.issn1742-6596cs
dc.identifier.orcid0000-0002-4875-4309cs
dc.identifier.orcid0000-0003-3831-3443cs
dc.identifier.orcid0000-0002-7123-5099cs
dc.identifier.other185679cs
dc.identifier.researcheridAAB-9386-2022cs
dc.identifier.researcheridAAM-3121-2020cs
dc.identifier.scopus57202956588cs
dc.identifier.scopus36171769500cs
dc.identifier.urihttps://hdl.handle.net/11012/245039
dc.language.isoencs
dc.publisherIOP Sciencecs
dc.relation.ispartofJournal of Physics: Conference Seriescs
dc.relation.urihttps://iopscience.iop.org/article/10.1088/1742-6596/2568/1/012010cs
dc.rightsCreative Commons Attribution 3.0 Unportedcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1742-6596/cs
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/cs
dc.subjectalkali-activated slagen
dc.subjectalkali activatorsen
dc.subjectmechanical propertiesen
dc.subjectautogenous shrinkageen
dc.titleEffect of siliceous sand volume fraction on the properties of alkali-activated slag mortarsen
dc.type.driverconferenceObjecten
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-185679en
sync.item.dbtypeVAVen
sync.item.insts2024.02.19 12:46:13en
sync.item.modts2024.02.19 12:13:48en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
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