Effect of binder content and recycled concrete aggregate on freeze-thaw and sulfate resistance of GGBFS based geopolymer concretes

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dc.authoridKARAKOÇ, MEHMET BURHAN/0000-0002-6954-0051
dc.authoridÖzcan, Ahmet/0000-0002-6451-9413
dc.authorwosidKARAKOÇ, MEHMET BURHAN/ABG-5446-2020
dc.authorwosidÖzcan, Ahmet/JAO-3381-2023
dc.contributor.authorUgurlu, Ayse Ilayda
dc.contributor.authorKarakoc, Mehmet Burhan
dc.contributor.authorOzcan, Ahmet
dc.date.accessioned2024-08-04T20:50:26Z
dc.date.available2024-08-04T20:50:26Z
dc.date.issued2021
dc.departmentİnönü Üniversitesien_US
dc.description.abstractThe use of waste materials in concrete production is important because of the recycling of these materials. In this context, the use of both geopolymer binder and recycled concrete aggregate (RCA) becomes important. For this purpose, in this study, ground granulated blast furnace slag (GGBFS) based geopolymer concrete containing RCA was designed and freeze-thaw (F-T) and sulfate resistance of these samples were determined. In the production of geopolymer concrete, three different binder contents (300, 400 and 500 kg/m3) and five different ratios of RCA (0, 25, 50, 75 and 100%) were used. Samples that completed curing period were exposed to 100F-T cycles and two sulfate solutions (3% MgSO4 and 1.5% Na2SO4 + 1.5% MgSO4). Compressive strength, ultrasonic pulse velocity (UPV), weight change and sorptivity values of these samples were determined. At the same time, these results were interpreted together with microstructure analysis (SEM and EDS). An exponential relationship was found between Ca/Si and Si/Al ratios of the samples and their compressive strength. Increasing in Ca/Si ratio and decreasing in Si/Al ratio caused an increase in compressive strength. As the binder content amount increased, the resistance of the samples against F-T cycles and sulfate solutions increased. With the increasing RCA ratio in the samples, there were increases in strength losses, but these losses were low and indicated that RCA was suitable for use in geopolymer concrete production.en_US
dc.description.sponsorshipInonu University, Scientific Research Project Unit [FYL-2018-1574, FBA-2018-1282]en_US
dc.description.sponsorshipThe research work reported in this paper supported within the research project numbers of FYL-2018-1574 and FBA-2018-1282 by Inonu University, Scientific Research Project Unit.en_US
dc.identifier.doi10.1016/j.conbuildmat.2021.124246
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85111265645en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2021.124246
dc.identifier.urihttps://hdl.handle.net/11616/100068
dc.identifier.volume301en_US
dc.identifier.wosWOS:000687398900002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Sci Ltden_US
dc.relation.ispartofConstruction and Building Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectGeopolymer concreteen_US
dc.subjectRecycled concrete aggregateen_US
dc.subjectBinder contenten_US
dc.subjectFreeze-thawen_US
dc.subjectSulfate attacken_US
dc.titleEffect of binder content and recycled concrete aggregate on freeze-thaw and sulfate resistance of GGBFS based geopolymer concretesen_US
dc.typeArticleen_US

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