The effects of different production parameters (NaOH concentration, curing regime and replacement ratio of recycled aggregate) on fresh, hardened and elevated temperature performance of geopolymer mortar samples

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dc.authoridEKINCI, ENES/0000-0001-7669-887X
dc.contributor.authorEkinci, Enes
dc.date.accessioned2024-08-04T20:54:27Z
dc.date.available2024-08-04T20:54:27Z
dc.date.issued2023
dc.departmentİnönü Üniversitesien_US
dc.description.abstractThis paper presents the findings of objective to examine the effects of construction and demoli-tion wastes (CDW) as fine aggregate on the performance of geopolymer mortar (GPM) specimens. In order to examine the effect of NaOH concentration on the performance of GPM samples, NaOH solutions with 3 different concentrations (8, 10 and 12 M) were prepared. GPM samples, in which the fine aggregate part was formed by replace of natural aggregate (NA) and CDW at three differ-ent ratios (0%, 50% and 100%), were cured in water and ambient conditions for 7 and 28 days. The alkali liquid/binder ratio was not determined as a variable and was kept constant at 0.6 for all GPM samples. Subsequently, compressive strength, workability, water absorption, unit weight and high temperature performance on GPM specimens were investigated in detail. All of these ex-perimental parameters were also supported by microstructural analysis (scanning electron mi-croscopy (SEM), X-ray diffraction (XRD), and Fourier Transform Infrared Spectroscopy (FTIR)). The results showed that the compressive strength values of granulated blast furnace slag (GBFS) based GPM samples can be increased up to 105% in case of choosing of water curing instead of curing in ambient conditions. It was determined that the increase in NaOH concentration de-creased the compressive strength values of GPM samples. Furthermore, experimental findings re-vealed that although CDW had a negative impact on the performance of GPM samples, it could still find potential usage area in the geopolymer production. On the other hand, the increases in NaOH concentration and CDW usage ratio led to decreased workability of GPM samples. Finally, it was underlined that the mechanical and physical characteristics of GPM samples decreased sharply with the increasing elevated temperature values (especially at 750 & DEG;C).en_US
dc.description.sponsorshipInonu Universityen_US
dc.description.sponsorshipAcknowledgement I would like to express my gratitude to Inonu University.en_US
dc.identifier.doi10.1016/j.jobe.2023.107052
dc.identifier.issn2352-7102
dc.identifier.scopus2-s2.0-85161985602en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2023.107052
dc.identifier.urihttps://hdl.handle.net/11616/101410
dc.identifier.volume76en_US
dc.identifier.wosWOS:001058434700001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal of Building Engineeringen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGeopolymeren_US
dc.subjectElevated temperatureen_US
dc.subjectCompressive strengthen_US
dc.subjectRecycled aggregateen_US
dc.subjectWater absorptionen_US
dc.titleThe effects of different production parameters (NaOH concentration, curing regime and replacement ratio of recycled aggregate) on fresh, hardened and elevated temperature performance of geopolymer mortar samplesen_US
dc.typeArticleen_US

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