From waste to resource : evaluation of the technical and environmental performance of concrete blocks made from iron ore tailings.

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorWeba, Luciana Chaves-
Autor(es): dc.creatorOliveira, Júlia Maria Medalha Resende-
Autor(es): dc.creatorSouza, Alberto José Corrêa de-
Autor(es): dc.creatorAntunes, Ludimila Gomes-
Autor(es): dc.creatorCarvalho, José Maria Franco de-
Autor(es): dc.creatorFontes, Wanna Carvalho-
Data de aceite: dc.date.accessioned2026-08-11T11:24:04Z-
Data de disponibilização: dc.date.available2026-08-11T11:24:04Z-
Data de envio: dc.date.issued2025-12-16-
Data de envio: dc.date.issued2024-
Fonte completa do material: dc.identifierhttps://www.repositorio.ufop.br/handle/123456789/21201-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/su17020552-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1187916-
Descrição: dc.descriptionThis study investigates the use of iron ore tailings (IOTs) as recycled aggregates in segmental blocks, focusing on technical performance, CO2 emissions, and embodied energy using the cradle-to-gate approach. IOTs replaced fine aggregates in concrete at 25%, 50%, and 75% by volume, achieving compressive strengths of 16.23 MPa, 10.02 MPa, and 3.93 MPa, respectively. Raw material production accounted for 98% of CO2 emissions and 86% of embodied energy. Producing blocks at mining sites offered limited environmental benefits due to longer transport distances. Despite this, the results showed a 6% reduction in CO2 emissions and a 35% improvement in mechanical–environmental performance (CO2 emissions weighted by compressive strength) compared to traditional concrete. These findings underscore the potential of IOT-based concrete for segmental block production.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/). Fonte: PDF do artigo.-
Palavras-chave: dc.subjectIron ore tailings-
Palavras-chave: dc.subjectConcrete LCA-
Palavras-chave: dc.subjectRecycled aggregates-
Palavras-chave: dc.subjectSustainable concrete-
Palavras-chave: dc.subjectSegmental blocks-
Título: dc.titleFrom waste to resource : evaluation of the technical and environmental performance of concrete blocks made from iron ore tailings.-
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