One-part sodium carbonate-activated slag/r-MgO based mixes: Influence of nano-silica incorporation on compressive strength and microstructural development

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dc.contributor.authorOzen, Omer Can
dc.contributor.authorOktay, Didem
dc.contributor.authorAkturk, Busra
dc.date.accessioned2024-07-18T20:42:31Z
dc.date.available2024-07-18T20:42:31Z
dc.date.issued2024
dc.departmentİstanbul Bilgi Üniversitesien_US
dc.description.abstractIn this study, environment -friendly one -part alkali -activated slag -based mixes were prepared by using solid sodium carbonate as the alkali activator and incorporating reactive MgO (r-MgO) as the additive. Substitution of rMgO in reference mixes was carried out at various levels, up to 15%, to enhance the reaction mechanism and strength development. The strength development was measured up to 56 days and analyzed microstructurally using Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric, and scanning electron microscopy analyses. Additionally, the influence of incorporating nano -silica in the binary mixes on strength development and microstructure was investigated. It was observed that the reaction mechanism could be improved by incorporating a low amount of reactive MgO, leading to expedited setting time and significant increases at both early age and final compressive strength values. Nano -silica incorporation was found to be effective in improving compressive strength at all ages, resulting in the formation of a higher matrix phase as demonstrated by microstructure tests. The highest compressive strength was attained in the nano -silica and rMgO incorporating ternary mixes, reaching 25.9 MPa on the 3rd day and 47.2 MPa on the 28th day after production. Furthermore, the environmental impacts of the produced mixes were assessed. This study highlights the feasibility of one -part sodium carbonate -activated slag -based materials, especially with r-MgO inclusion, and underscores the role of nano -silica incorporation in enhancing strength properties.en_US
dc.description.sponsorshipIstanbul Bilgi University Scientific Research Projects [AK85096]; Yildiz Technical University Scientific Research [FYL-2023-5636]; Production of Nano-Silica Added, Sodium Carbonate Activated Reactive MgO/Slag-Based Binder Systems: Rheological, Microstructural Properties, Performance, and Manufacturability with Digital Technologiesen_US
dc.description.sponsorshipThis study received partial funding from the project titled Production of Nano-Silica Added, Sodium Carbonate Activated Reactive MgO/Slag-Based Binder Systems: Rheological, Microstructural Properties, Performance, and Manufacturability with Digital Technologies, supported by Istanbul Bilgi University Scientific Research Projects (Project No: AK85096) and Yildiz Technical University Scientific Research Projects (Project No: FYL-2023-5636). The authors extend their appreciation to AKCANSA Inc. and KUMAS Magnesite Industry Inc. for providing slag and reactive MgO, respectively. Furthermore, the authors express gratitude to the Yildiz Technical University Central Laboratory for conducting microstructural analyses.During the preparation of this work, the authors used ChatGPT in order to improve the language. After using this tool/service, the authors reviewed and edited the content as needed and take full responsibility for the content of the publication.en_US
dc.identifier.doi10.1016/j.conbuildmat.2024.135844
dc.identifier.issn0950-0618
dc.identifier.issn1879-0526
dc.identifier.scopus2-s2.0-85187797042en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2024.135844
dc.identifier.urihttps://hdl.handle.net/11411/7312
dc.identifier.volume422en_US
dc.identifier.wosWOS:001211454800001en_US
dc.identifier.wosqualityN/Aen_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.subjectSodium Carbonateen_US
dc.subjectOne -Part Mixingen_US
dc.subjectNano -Silicaen_US
dc.subjectCompressive Strengthen_US
dc.subjectMicrostructureen_US
dc.subjectBlast-Furnace Slagen_US
dc.subjectC-S-Hen_US
dc.subjectFly-Ashen_US
dc.subjectReactive Mgoen_US
dc.subjectMechanical-Propertiesen_US
dc.subjectHydration Propertiesen_US
dc.subjectThermal-Propertiesen_US
dc.subjectReaction-Kineticsen_US
dc.subjectDrying Shrinkageen_US
dc.subjectCement Pasteen_US
dc.titleOne-part sodium carbonate-activated slag/r-MgO based mixes: Influence of nano-silica incorporation on compressive strength and microstructural developmenten_US
dc.typeArticleen_US

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