Development of alkali-activated binders from recycled mixed masonry-originated waste

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dc.contributor.authorYildirim, Gürkan
dc.contributor.authorKul, Anil
dc.contributor.authorOzcelikci, Emircan
dc.contributor.authorSahmaran, Mustafa
dc.contributor.authorAldemir, Alper
dc.contributor.authorFigueira, Diogo
dc.contributor.authorAshour, Ashraf
dc.date.accessioned2021-01-14T18:10:19Z
dc.date.available2021-01-14T18:10:19Z
dc.date.issued2021
dc.departmentKKÜ
dc.description.abstractIn this study, the main emphasis is placed on the development and characterization of alkali-activated binders completely produced by the use of mixed construction and demolition waste (CDW)-based masonry units as aluminosilicate precursors. Combined usage of precursors was aimed to better simulate the real-life cases since in the incident of construction and demolition, these wastes are anticipated to be generated collectively. As different masonry units, red clay brick (RCB), hollow brick (HB) and roof tile (RT) were used in binary combinations by 75-25%, 50-50% and 25-75% of the total weight of the binder. Mixtures were produced with different curing temperature/periods and molarities of NaOH solution as the alkaline activator. Characterization was made by the compressive strength measurements supported by microstructural investigations which included the analyses of X-ray diffraction (XRD) and scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM/EDX). Results clearly showed that completely CDW-based masonry units can be effectively used collectively in producing alkali-activated binders having up to 80 MPa compressive strength provided that the mixture design parameters are optimized. Among different precursors utilized, HB seems to contribute more to the compressive strength. Irrespective of their composition, main reaction products of alkali-activated binders from CDW-based masonry units are sodium aluminosilicate hydrate (N-A-S-H) gels containing different zeolitic polytypes with structure ranging from amorphous to polycrystalline.en_US
dc.description.sponsorshipBritish CouncilThe British Council in India [117M447, 218M102]; Scientific and Technical Research Council (TUBITAK) of TurkeyTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)en_US
dc.description.sponsorshipThe authors gratefully acknowledge the financial assistance of the Scientific and Technical Research Council (TUBITAK) of Turkey and British Council provided under projects: 117M447 and 218M102.en_US
dc.identifier.doi10.1016/j.jobe.2020.101690
dc.identifier.issn2352-7102
dc.identifier.scopus2-s2.0-85089154250
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.jobe.2020.101690
dc.identifier.urihttps://hdl.handle.net/20.500.12587/12496
dc.identifier.volume33en_US
dc.identifier.wosWOS:000599645300009
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherELSEVIERen_US
dc.relation.ispartofJOURNAL OF BUILDING ENGINEERING
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAlkali-activated materials (AAMs)en_US
dc.subjectConstruction and demolition Waste (CDW)en_US
dc.subjectMasonryen_US
dc.subjectCompressive strengthen_US
dc.subjectMicrostructureen_US
dc.titleDevelopment of alkali-activated binders from recycled mixed masonry-originated wasteen_US
dc.typeArticle

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