Effect of Activator Type on Geopolymer Mortars Containing Different Types of Fly Ash

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dc.authoridAVSAR, YUNUS EMRE/0000-0001-5197-0267
dc.contributor.authorAkyuncu, Veysel
dc.contributor.authorAvsar, Yunus Emre
dc.contributor.authorEmre, Tolga Enes
dc.date.accessioned2024-10-29T17:59:10Z
dc.date.available2024-10-29T17:59:10Z
dc.date.issued2023
dc.departmentTekirdağ Namık Kemal Üniversitesi
dc.description.abstractIn this study, the influence of the activator type on the physical and mechanical properties of the geopolymer mortars was analyzed. C and F-class fly ash (FA), blast furnace slag (BFS), sodium hydroxide (NH), sodium metasilicate (NS), standard sand, and distilled water were used in the production of mortar specimens. All specimens were cured at room temperature. C and F-class fly ash usage ratios are 0%, 15%, and 30%. NH was used as an activator in the 1st group of the produced geopolymer mortars, and NS with NH was used in the 2nd group. 5 series were produced and a flow-table test, ultrasonic pulse velocity test, flexural strength test, compressive strength test, and Scanning Electron Microscope-Energy Dispersive Spectrometry (SEM-EDS) microstructure analysis were applied to the samples. The addition of NS increased the compressive strength and the greatest increase occurred in the reference sample by 113%. It also increased the compressive strength of FAF30 by 60% in comparison to FAC30. Following the results of the SEM examination, when the reference samples were compared, the addition of NS inhibited the formation of cracks. According to the SEMEDS analysis results, an increase in the F and C-class FA ratio improved the crack formation. Compared to F-class FA, FAC30 has more cracks due to the lower SiO2 content in C-class FA. High K content and SiO2 ratio, as determined by EDS analysis, boost the alkalinity and positively impact the strength.
dc.identifier.doi10.3311/PPci.21945
dc.identifier.endpage764
dc.identifier.issn0553-6626
dc.identifier.issue3en_US
dc.identifier.scopus2-s2.0-85163020467
dc.identifier.scopusqualityQ3
dc.identifier.startpage757
dc.identifier.urihttps://doi.org/10.3311/PPci.21945
dc.identifier.urihttps://hdl.handle.net/20.500.11776/14650
dc.identifier.volume67
dc.identifier.wosWOS:000971747900001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherBudapest Univ Technology Economics
dc.relation.ispartofPeriodica Polytechnica-Civil Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectgeopolymer
dc.subjectultrasonic pulse velocity
dc.subjectflexural strength
dc.subjectcompressive strength
dc.subjectSEM-EDS
dc.titleEffect of Activator Type on Geopolymer Mortars Containing Different Types of Fly Ash
dc.typeArticle

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