Rheological and microstructural properties of FA+GGBFS-based engineered geopolymer composites (EGCs) capable of comparing with M45-ECC as mechanical performance

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dc.contributor.authorOz, Hatice Oznur
dc.contributor.authorGunes, Muhammet
dc.contributor.authorYucel, Hasan Erhan
dc.date.accessioned2024-11-07T13:24:27Z
dc.date.available2024-11-07T13:24:27Z
dc.date.issued2023
dc.departmentNiğde Ömer Halisdemir Üniversitesi
dc.description.abstractIn this study, it has been aimed to obtain the fly ash + ground granulated blast furnace slag (FA GGBFS)-based engineered geopolymer composites (EGCs) having similar bearing strength and deformation capacity with the engineered cementitious composite (M45-ECC) known as M45. EGCs incorporating 70% FA and 30% GGBFS as binder were developed under three different groups in which the different ratios of alkali liquids/binder (AL/Bi) with the different content of AL + Bi. All of eight FA + GGBFS-based EGCs designed with 2.5 ratio of Na2SiO3/NaOH. FA GGBFS-based EGCs, which were kept in the mold under laboratory conditions for 24 h imme-diately after production, were kept in water at 60 degrees C until the test age. The fresh, rheogical, mechanical and microstructural properties of FA + GGBFS-based EGCs were determined. Test results indicated that FA + GGBFS-based EGCs can be developed with similar or higher compressive strength and ductility than that of M45-ECC. However, the flexural strength of M45-ECC was higher than those of all other composites. In addition, TGA/DTA and FTIR analysis supported that the excessive amount of AL + Bi content would not improve the characteristics of FA + GGBFS-based EGCs after the optimal production of C-S-H and N-A-S-H gels which acquired in geopolymerization. However, ductility continued to improve significantly as the AL + Bi content increased. Moreover, reduction of AL/Bi ratio increased the total gel content and thus, the compressive strength of composites developed.
dc.description.sponsorshipOmer Halisdemir University Scientific Research Projects Coordination Unit, Project [MMT 2021/2-BAGEP]
dc.description.sponsorshipThis research has been supported by Nigde Number MMT 2021/2-BAGEP. Omer Halisdemir University Scientific Research Projects Coordination Unit, Project
dc.identifier.doi10.1016/j.jobe.2022.105792
dc.identifier.issn2352-7102
dc.identifier.scopus2-s2.0-85145260150
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2022.105792
dc.identifier.urihttps://hdl.handle.net/11480/14128
dc.identifier.volume65
dc.identifier.wosWOS:000997185400001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofJournal of Building Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241106
dc.subjectFA+GGBFS-based EGCs
dc.subjectM45-ECC
dc.subjectFresh and rheogical properties
dc.subjectMechanical properties
dc.subjectMicrostructural characteristics
dc.titleRheological and microstructural properties of FA+GGBFS-based engineered geopolymer composites (EGCs) capable of comparing with M45-ECC as mechanical performance
dc.typeArticle

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