MONITORING THE INTERNAL STRUCTURE BEHAVIOUR OF ALKALI-ACTIVATED SLAG PASTE: EFFECT OF THE CURING MODE

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dc.contributor.authorNápravník, Petrcs
dc.contributor.authorKocáb, Daliborcs
dc.contributor.authorBílek, Vlastimilcs
dc.contributor.authorLisztwan, Dominikcs
dc.contributor.authorKucharczyková, Barbaracs
dc.coverage.issue6cs
dc.coverage.volume63cs
dc.date.accessioned2024-02-23T12:46:03Z
dc.date.available2024-02-23T12:46:03Z
dc.date.issued2023-12-31cs
dc.description.abstractThis paper deals with the monitoring of the internal structure behaviour of an alkali -activated slag (AAS) paste. The slag was activated with a 4M solution of sodium hydroxide. The behaviour of the internal structure of the paste was regularly monitored through the changes in the resonant frequency and the mechanical properties, until the paste reached the age of 90 days. The main aim of the article is to show the long-term maturation and degradation process of an AAS paste under different curing modes. The results obtained suggest that the curing mode of the specimens has a significant effect on the behaviour of the internal structure of the paste based on the AAS. The development of both the dynamic properties and the flexural strength indicates the occurrence of a higher porosity in the internal structure of the paste, especially when the free drying process is started earlier. Insufficient hydration of the binder system is also a likely cause of cracks. The reduction in the relative dynamic moduli values ranging from 50 % to 80 % was observed for drying specimens at the age of 90 days. What is very interesting is that the occurrence of cracks was not prevented even by intensive moist curing of the paste as, between the 21st and the 28th day of maturing, there was a significant decrease of about 20 % in the relative dynamic modulus of elasticity and also a 50 % reduction in the flexural strength.en
dc.formattextcs
dc.format.extent411-418cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationActa Polytechnica (on-line). 2023, vol. 63, issue 6, p. 411-418.en
dc.identifier.doi10.14311/AP.2023.63.0411cs
dc.identifier.issn1805-2363cs
dc.identifier.orcid0000-0001-6602-5735cs
dc.identifier.orcid0000-0002-8273-4571cs
dc.identifier.orcid0000-0003-3831-3443cs
dc.identifier.orcid0000-0002-5002-353Xcs
dc.identifier.orcid0000-0002-7123-5099cs
dc.identifier.other186975cs
dc.identifier.researcheridAAW-8720-2020cs
dc.identifier.researcheridAAB-9386-2022cs
dc.identifier.researcheridAAM-3121-2020cs
dc.identifier.scopus56721310500cs
dc.identifier.scopus36171769500cs
dc.identifier.urihttps://hdl.handle.net/11012/245201
dc.language.isoencs
dc.publisherCZECH TECHNICAL UNIV PRAGUEcs
dc.relation.ispartofActa Polytechnica (on-line)cs
dc.relation.urihttps://ojs.cvut.cz/ojs/index.php/ap/article/view/9186cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1805-2363/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectAlkali-activated slagen
dc.subjectresonance methoden
dc.subjectresonant frequencyen
dc.subjectcuring modeen
dc.subjectflexural strengthen
dc.subjectcracken
dc.titleMONITORING THE INTERNAL STRUCTURE BEHAVIOUR OF ALKALI-ACTIVATED SLAG PASTE: EFFECT OF THE CURING MODEen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-186975en
sync.item.dbtypeVAVen
sync.item.insts2024.02.23 13:46:03en
sync.item.modts2024.02.23 13:13:33en
thesis.grantorVysoké učení technické v Brně. Fakulta stavební. Ústav stavebního zkušebnictvícs
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
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