Effects of elevated temperatures and cooling regimes on the waste andesite dust-based geopolymer mortars

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dc.contributor.authorCelikten, Serhat
dc.contributor.authorSaridemir, Mustafa
dc.contributor.authorSologlu, Mustafa
dc.date.accessioned2024-11-07T13:25:27Z
dc.date.available2024-11-07T13:25:27Z
dc.date.issued2024
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, the geopolymer mortar mixtures were manufactured by activating andesite stone cutting waste dust with sodium silicate. The sodium silicate content in the mixtures was determined to contain 6%, 8% and 10% Na2O by weight of waste andesite dust (WAD). The produced mixtures were subjected to thermal curing at three different temperatures (60 degrees C, 75 degrees C and 90 degrees C), and in two different periods (8 hours and 24 hours). Flexural strength (fs) and compressive strength (fc) tests of 1, 28 and 56 days were carried out on the specimens obtained from the geopolymer mortar mixtures. The effects of Na2O content, thermal curing temperature and time on the strength values of the geopolymer mortars were investigated. Moreover, the geopolymer mortar samples produced with 8 hours of thermal curing were exposed separately to 400 degrees C, 600 degrees C and 800 degrees C. The specimens, which were kept for 1 hour at 400 degrees C, 600 degrees C and 800 degrees C, were exposed to three different cooling conditions (slow-cooled in air, fast-cooled in air and water-cooled). The fs and fc tests were carried out on the cooled geopolymer mortars, and the effects of high temperatures and cooling conditions on the strength properties of the geopolymer mortars were evaluated. In addition, the changes in the microstructures were examined by performing XRD and SEM/EDAX analyses on the selected geopolymer mortars. The fs and fc values of the watercooled geopolymer mortars significantly decreased.
dc.description.sponsorshipResearch Fund of the Nevsehir Haci Bektas Veli University [TEZ22F8]
dc.description.sponsorshipThis work was supported by Research Fund of the Nevsehir Haci Bektas Veli University, Project Number: TEZ22F8.
dc.identifier.doi10.1016/j.conbuildmat.2024.135857
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85188031599
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.135857
dc.identifier.urihttps://hdl.handle.net/11480/14719
dc.identifier.volume422
dc.identifier.wosWOS:001226790800001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Sci Ltd
dc.relation.ispartofConstruction and Building Materials
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectWaste andesite dust
dc.subjectGeopolymer
dc.subjectHigh temperature
dc.subjectCooling conditions
dc.titleEffects of elevated temperatures and cooling regimes on the waste andesite dust-based geopolymer mortars
dc.typeArticle

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