Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes

This study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution. Unconfined compressive strength, split tensile strength, initial shear stiffness, mineralogy, chemical...

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Autores principales: Levandoski, William Mateus Kubiaki, Ferrazzo, Suéllen Tonatto, Bruschi, Giovani Jordi, Consoli, Nilo Cesar, Korf, Eduardo Pavan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2023
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10514201/
https://www.ncbi.nlm.nih.gov/pubmed/37735581
http://dx.doi.org/10.1038/s41598-023-42999-x
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author Levandoski, William Mateus Kubiaki
Ferrazzo, Suéllen Tonatto
Bruschi, Giovani Jordi
Consoli, Nilo Cesar
Korf, Eduardo Pavan
author_facet Levandoski, William Mateus Kubiaki
Ferrazzo, Suéllen Tonatto
Bruschi, Giovani Jordi
Consoli, Nilo Cesar
Korf, Eduardo Pavan
author_sort Levandoski, William Mateus Kubiaki
collection PubMed
description This study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution. Unconfined compressive strength, split tensile strength, initial shear stiffness, mineralogy, chemical composition, and microstructure of IOTs-AAB were evaluated. Strength values up to 6.59 MPa were achieved after 28 days-curing at 40 °C. Reducing porosity and increasing the binder content improved the overall mechanical behavior. N-A-S-H like gels were identified in IOTs-AAB mixtures. Finally, longer curing times led to more compact structures.
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spelling pubmed-105142012023-09-23 Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes Levandoski, William Mateus Kubiaki Ferrazzo, Suéllen Tonatto Bruschi, Giovani Jordi Consoli, Nilo Cesar Korf, Eduardo Pavan Sci Rep Article This study evaluated the stabilization of iron ore tailings (IOTs) with an alkali-activated binder (AAB) produced from sugar cane bagasse ash, hydrated eggshell lime, and sodium hydroxide solution. Unconfined compressive strength, split tensile strength, initial shear stiffness, mineralogy, chemical composition, and microstructure of IOTs-AAB were evaluated. Strength values up to 6.59 MPa were achieved after 28 days-curing at 40 °C. Reducing porosity and increasing the binder content improved the overall mechanical behavior. N-A-S-H like gels were identified in IOTs-AAB mixtures. Finally, longer curing times led to more compact structures. Nature Publishing Group UK 2023-09-21 /pmc/articles/PMC10514201/ /pubmed/37735581 http://dx.doi.org/10.1038/s41598-023-42999-x Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Levandoski, William Mateus Kubiaki
Ferrazzo, Suéllen Tonatto
Bruschi, Giovani Jordi
Consoli, Nilo Cesar
Korf, Eduardo Pavan
Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title_full Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title_fullStr Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title_full_unstemmed Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title_short Mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
title_sort mechanical and microstructural properties of iron mining tailings stabilized with alkali-activated binder produced from agro-industrial wastes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10514201/
https://www.ncbi.nlm.nih.gov/pubmed/37735581
http://dx.doi.org/10.1038/s41598-023-42999-x
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