Synthesis and properties of alkali-activated iron ore tailings blended with metakaolin

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSilva, Keoma Defáveri do Carmo e-
Autor(es): dc.creatorAlvarenga, Henrique Barbosa Andrade-
Autor(es): dc.creatorRocha, Saulo Ferreira-
Autor(es): dc.creatorPeixoto, Ricardo André Fiorotti-
Autor(es): dc.creatorBrigolini, Guilherme Jorge Silva-
Data de aceite: dc.date.accessioned2026-02-09T11:56:49Z-
Data de disponibilização: dc.date.available2026-02-09T11:56:49Z-
Data de envio: dc.date.issued2023-11-20-
Data de envio: dc.date.issued2023-11-20-
Data de envio: dc.date.issued2023-09-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/58569-
Fonte completa do material: dc.identifierhttps://ceramics.onlinelibrary.wiley.com/doi/full/10.1111/ijac.14436-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1150960-
Descrição: dc.descriptionIn this study, synthesis, microstructural characteristics, mechanical proper-ties, and environmental compatibility of alkali-activated binders derived fromiron ore tailings (IOT)—with partial replacement with metakaolin (MK)—wereinvestigated. The binders were produced with a NaOH solution, IOT, and MK.A thermal cure at 100◦C was used and the MK was applied as a partial replace-ment of IOT in three proportions (10, 20, and 30 wt%). The IOT-based specimenspresented an average of 98.0 and 18.0 MPa at 7 days age of curing for com-pressive and flexural strength, respectively. The mechanical properties of thealkali-activatedbinderswithMKdecreasedasthesubstitutionratioincreased.Bythe microstructural analysis, it was found a zeolite-type phase in alkali-activatedIOT, while in the bindersblendedwith MK, threenewmineral phases were iden-tified. Furthermore, Fourier transform infrared, quantitative X-ray diffraction,and environmental analysis suggest that the Fe species present in IOT acted inthe alkali-activation reaction.-
Idioma: dc.languageen-
Publicador: dc.publisherWiley-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceInternational Journal of Applied Ceramic Technology-
Palavras-chave: dc.subjectAlkali-activated-
Palavras-chave: dc.subjectIron ore tailings-
Palavras-chave: dc.subjectMetakaolin-
Palavras-chave: dc.subjectThermal cure-
Palavras-chave: dc.subjectZeolite-
Título: dc.titleSynthesis and properties of alkali-activated iron ore tailings blended with metakaolin-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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