Mechanical behavior of a mine tailing stabilized with a sustainable binder
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://hdl.handle.net/1822/85416 |
Resumo: | Mining is a primary sector for the national economy of many countries, but exploiting these natural resources causes negative impacts on the environment. Tailings produced during mining, called mine tailings, have to be disposed of, and for that purpose, they are often mixed with Portland cement to control environmental toxicity and improve their mechanical properties. However, the high environmental impacts of producing Portland cement are well known. In this sense, sustainable binders based on the alkaline activation of industrial wastes have been studied as an alternative to using Portland cement. This study focused on applying a sustainable binder based on the alkaline activation of fly ash to improve the mechanical performance of a mine tailing from a mine located in Portugal. Geotechnical tests and chemical analysis were conducted to characterize the mine tailing and fly ash used in the alkaline activation process. In addition, triaxial tests were performed to evaluate the mechanical performance of the specimens, with both natural and stabilized tailings. The developed study proved that stabilized tailing with activated fly ash shows promising mechanical performance showing that this approach can be an excellent alternative to using Portland cement. |
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Mechanical behavior of a mine tailing stabilized with a sustainable binderMine tailingAlkaline activationFly ashTriaxial testEngenharia e Tecnologia::Engenharia CivilScience & TechnologyMining is a primary sector for the national economy of many countries, but exploiting these natural resources causes negative impacts on the environment. Tailings produced during mining, called mine tailings, have to be disposed of, and for that purpose, they are often mixed with Portland cement to control environmental toxicity and improve their mechanical properties. However, the high environmental impacts of producing Portland cement are well known. In this sense, sustainable binders based on the alkaline activation of industrial wastes have been studied as an alternative to using Portland cement. This study focused on applying a sustainable binder based on the alkaline activation of fly ash to improve the mechanical performance of a mine tailing from a mine located in Portugal. Geotechnical tests and chemical analysis were conducted to characterize the mine tailing and fly ash used in the alkaline activation process. In addition, triaxial tests were performed to evaluate the mechanical performance of the specimens, with both natural and stabilized tailings. The developed study proved that stabilized tailing with activated fly ash shows promising mechanical performance showing that this approach can be an excellent alternative to using Portland cement.This work was partly financed by FCT/MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020, and under the Associate Laboratory Advanced Production and Intelligent Systems ARISE under reference LA/P/0112/2020. This work was also partly funded by the research project MINECO—New Eco-Innovative Materials for Mining Infra, with reference ERA-MIN/0001/2018, funded by Portuguese State Budget through the FCT/MCTES.Multidisciplinary Digital Publishing InstituteUniversidade do MinhoManaviparast, Hamid RezaPinheiro, JoãoNajafi, Elmira KhaksarAbreu, CláudiaAraújo, NunoCristelo, NunoMiranda, Tiago2023-03-232023-03-23T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/85416engManaviparast, H.R.; Pinheiro, J.; Najafi, E.K.; Abreu, C.; Araújo, N.; Cristelo, N.; Miranda, T. Mechanical Behavior of a Mine Tailing Stabilized with a Sustainable Binder. Appl. Sci. 2023, 13, 4103. https://doi.org/10.3390/app130741032076-341710.3390/app13074103https://www.mdpi.com/2076-3417/13/7/4103info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:50:20Zoai:repositorium.sdum.uminho.pt:1822/85416Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:49:00.273079Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
title |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
spellingShingle |
Mechanical behavior of a mine tailing stabilized with a sustainable binder Manaviparast, Hamid Reza Mine tailing Alkaline activation Fly ash Triaxial test Engenharia e Tecnologia::Engenharia Civil Science & Technology |
title_short |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
title_full |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
title_fullStr |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
title_full_unstemmed |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
title_sort |
Mechanical behavior of a mine tailing stabilized with a sustainable binder |
author |
Manaviparast, Hamid Reza |
author_facet |
Manaviparast, Hamid Reza Pinheiro, João Najafi, Elmira Khaksar Abreu, Cláudia Araújo, Nuno Cristelo, Nuno Miranda, Tiago |
author_role |
author |
author2 |
Pinheiro, João Najafi, Elmira Khaksar Abreu, Cláudia Araújo, Nuno Cristelo, Nuno Miranda, Tiago |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Manaviparast, Hamid Reza Pinheiro, João Najafi, Elmira Khaksar Abreu, Cláudia Araújo, Nuno Cristelo, Nuno Miranda, Tiago |
dc.subject.por.fl_str_mv |
Mine tailing Alkaline activation Fly ash Triaxial test Engenharia e Tecnologia::Engenharia Civil Science & Technology |
topic |
Mine tailing Alkaline activation Fly ash Triaxial test Engenharia e Tecnologia::Engenharia Civil Science & Technology |
description |
Mining is a primary sector for the national economy of many countries, but exploiting these natural resources causes negative impacts on the environment. Tailings produced during mining, called mine tailings, have to be disposed of, and for that purpose, they are often mixed with Portland cement to control environmental toxicity and improve their mechanical properties. However, the high environmental impacts of producing Portland cement are well known. In this sense, sustainable binders based on the alkaline activation of industrial wastes have been studied as an alternative to using Portland cement. This study focused on applying a sustainable binder based on the alkaline activation of fly ash to improve the mechanical performance of a mine tailing from a mine located in Portugal. Geotechnical tests and chemical analysis were conducted to characterize the mine tailing and fly ash used in the alkaline activation process. In addition, triaxial tests were performed to evaluate the mechanical performance of the specimens, with both natural and stabilized tailings. The developed study proved that stabilized tailing with activated fly ash shows promising mechanical performance showing that this approach can be an excellent alternative to using Portland cement. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-03-23 2023-03-23T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://hdl.handle.net/1822/85416 |
url |
https://hdl.handle.net/1822/85416 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Manaviparast, H.R.; Pinheiro, J.; Najafi, E.K.; Abreu, C.; Araújo, N.; Cristelo, N.; Miranda, T. Mechanical Behavior of a Mine Tailing Stabilized with a Sustainable Binder. Appl. Sci. 2023, 13, 4103. https://doi.org/10.3390/app13074103 2076-3417 10.3390/app13074103 https://www.mdpi.com/2076-3417/13/7/4103 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133069522763776 |