Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil
Autor(a) principal: | |
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Data de Publicação: | 2022 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | https://doi.org/10.1016/j.jmrt.2022.03.070 http://hdl.handle.net/1843/60686 https://orcid.org/0000-0003-1076-4832 https://orcid.org/0000-0002-0121-0881 https://orcid.org/0000-0002-8572-5531 https://orcid.org/0000-0001-8444-9451 https://orcid.org/0000-0002-7451-3365 |
Resumo: | Brazil is the second-largest global iron ore producer in the world. Consequently, a large volume of iron ore tailings (IOTs) is generated, which is associated with environmental impacts. IOTs present potential to be used as an addition in cementitious compounds, however, few studies assess how the heterogeneity of this waste can limit its utilization as a building material. Thus, the present study aims to assess whether the heterogeneity of IOTs influences mechanical, durability, and microstructural properties when added to the cementitious composite. Four IOTs samples from different origins were collected and added to cementitious composite at 40% addition content. Composites’ mechanical (compressive strength and modulus of elasticity) and durability properties (water absorption, porosity, electrical resistivity, carbonation, and pH pore solution) were correlated to the microstructure of the IOTs. Results showed that the IOTs from different mines exhibited different physical properties and chemical/mineralogical compositions. Moreover, the higher the degree of ore processing, the lower the heterogeneity, iron content, and specific gravity. Although the IOT samples are heterogeneous, this type of tailing can be used as a filler addition in structural mortars. IOT addition tends to improve the mechanical and durability properties. Heterogeneity most significantly influenced the properties in the fresh state, durability, and microstructural properties. The microstructure of the cement matrix tends to be denser in the IOT-added with higher SSA and silica content. Was observed higher-porosity in regions close to the interfacial transition zone in the samples with coarser IOT. |
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2023-11-08T22:25:10Z2023-11-08T22:25:10Z20221819471962https://doi.org/10.1016/j.jmrt.2022.03.0702214-0697http://hdl.handle.net/1843/60686https://orcid.org/0000-0003-1076-4832https://orcid.org/0000-0002-0121-0881https://orcid.org/0000-0002-8572-5531https://orcid.org/0000-0001-8444-9451https://orcid.org/0000-0002-7451-3365Brazil is the second-largest global iron ore producer in the world. Consequently, a large volume of iron ore tailings (IOTs) is generated, which is associated with environmental impacts. IOTs present potential to be used as an addition in cementitious compounds, however, few studies assess how the heterogeneity of this waste can limit its utilization as a building material. Thus, the present study aims to assess whether the heterogeneity of IOTs influences mechanical, durability, and microstructural properties when added to the cementitious composite. Four IOTs samples from different origins were collected and added to cementitious composite at 40% addition content. Composites’ mechanical (compressive strength and modulus of elasticity) and durability properties (water absorption, porosity, electrical resistivity, carbonation, and pH pore solution) were correlated to the microstructure of the IOTs. Results showed that the IOTs from different mines exhibited different physical properties and chemical/mineralogical compositions. Moreover, the higher the degree of ore processing, the lower the heterogeneity, iron content, and specific gravity. Although the IOT samples are heterogeneous, this type of tailing can be used as a filler addition in structural mortars. IOT addition tends to improve the mechanical and durability properties. Heterogeneity most significantly influenced the properties in the fresh state, durability, and microstructural properties. The microstructure of the cement matrix tends to be denser in the IOT-added with higher SSA and silica content. Was observed higher-porosity in regions close to the interfacial transition zone in the samples with coarser IOT.O Brasil é o segundo maior produtor global de minério de ferro do mundo. Consequentemente, é gerado um grande volume de rejeitos de minério de ferro (IOTs), o que está associado a impactos ambientais. Os IOTs apresentam potencial para serem utilizados como adição em compostos cimentícios, porém, poucos estudos avaliam como a heterogeneidade desse resíduo pode limitar sua utilização como material de construção. Assim, o presente estudo tem como objetivo avaliar se a heterogeneidade dos IOTs influencia nas propriedades mecânicas, de durabilidade e microestruturais quando adicionados ao compósito cimentício. Quatro amostras de IOTs de diferentes origens foram coletadas e adicionadas ao compósito cimentício com teor de adição de 40%. As propriedades mecânicas (resistência à compressão e módulo de elasticidade) e de durabilidade dos compósitos (absorção de água, porosidade, resistividade elétrica, carbonatação e pH da solução dos poros) foram correlacionadas com a microestrutura dos IOTs. Os resultados mostraram que os IOTs de diferentes minas exibiram diferentes propriedades físicas e composições químicas/mineralógicas. Além disso, quanto maior o grau de processamento do minério, menor a heterogeneidade, o teor de ferro e a gravidade específica. Embora as amostras de IOT sejam heterogêneas, esse tipo de rejeito pode ser utilizado como adição de carga em argamassas estruturais. A adição de IOT tende a melhorar as propriedades mecânicas e de durabilidade. A heterogeneidade influenciou mais significativamente as propriedades no estado fresco, durabilidade e propriedades microestruturais. A microestrutura da matriz de cimento tende a ser mais densa no IOT adicionado com maior teor de SSA e sílica. Foi observada maior porosidade em regiões próximas à zona de transição interfacial nas amostras com IOT mais grosseiro.CNPq - Conselho Nacional de Desenvolvimento Científico e TecnológicoFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas GeraisCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorengUniversidade Federal de Minas GeraisUFMGBrasilENG - DEPARTAMENTO DE ENGENHARIA MATERIAIS E DA CONSTRUÇÃO CIVILJournal of Materials Research and TechnologyMinérios de ferroResíduos de mineraçãoResíduos sólidos - reaproveitamentoDurabilidade (Engenharia)Iron ore tailingsWaste heterogeneityMineral additionWaste reuseMechanical propertiesDurabilityStudy of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from BrazilEstudo das propriedades mecânicas, de durabilidade e microestruturais de compósito cimentício com adição de diferentes rejeitos de minério de ferro do Brasilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttps://www.sciencedirect.com/science/article/pii/S2238785422003775?via%3DihubBruna Silva AlmadaHenrique da Silva Silveira MeloMarlo Souza DuarteMaria Teresa Paulino AguilarDayana Cristina Silva GarciaGuilherme Jorge Brigolini SilvaWhite José Dos Santosapplication/pdfinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMGLICENSELicense.txtLicense.txttext/plain; charset=utf-82042https://repositorio.ufmg.br/bitstream/1843/60686/1/License.txtfa505098d172de0bc8864fc1287ffe22MD51ORIGINALStudy of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil.pdfStudy of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil.pdfapplication/pdf6753501https://repositorio.ufmg.br/bitstream/1843/60686/2/Study%20of%20mechanical%2c%20durability%20and%20microstructural%20properties%20of%20cementitious%20composite%20with%20addition%20of%20different%20iron%20ore%20tailings%20from%20Brazil.pdf1daf3a524a54541d5a414e470d8a49a7MD521843/606862023-11-08 19:25:10.74oai:repositorio.ufmg.br:1843/60686Repositório de PublicaçõesPUBhttps://repositorio.ufmg.br/oaiopendoar:2023-11-08T22:25:10Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.pt_BR.fl_str_mv |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
dc.title.alternative.pt_BR.fl_str_mv |
Estudo das propriedades mecânicas, de durabilidade e microestruturais de compósito cimentício com adição de diferentes rejeitos de minério de ferro do Brasil |
title |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
spellingShingle |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil Bruna Silva Almada Iron ore tailings Waste heterogeneity Mineral addition Waste reuse Mechanical properties Durability Minérios de ferro Resíduos de mineração Resíduos sólidos - reaproveitamento Durabilidade (Engenharia) |
title_short |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
title_full |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
title_fullStr |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
title_full_unstemmed |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
title_sort |
Study of mechanical, durability and microstructural properties of cementitious composite with addition of different iron ore tailings from Brazil |
author |
Bruna Silva Almada |
author_facet |
Bruna Silva Almada Henrique da Silva Silveira Melo Marlo Souza Duarte Maria Teresa Paulino Aguilar Dayana Cristina Silva Garcia Guilherme Jorge Brigolini Silva White José Dos Santos |
author_role |
author |
author2 |
Henrique da Silva Silveira Melo Marlo Souza Duarte Maria Teresa Paulino Aguilar Dayana Cristina Silva Garcia Guilherme Jorge Brigolini Silva White José Dos Santos |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Bruna Silva Almada Henrique da Silva Silveira Melo Marlo Souza Duarte Maria Teresa Paulino Aguilar Dayana Cristina Silva Garcia Guilherme Jorge Brigolini Silva White José Dos Santos |
dc.subject.por.fl_str_mv |
Iron ore tailings Waste heterogeneity Mineral addition Waste reuse Mechanical properties Durability |
topic |
Iron ore tailings Waste heterogeneity Mineral addition Waste reuse Mechanical properties Durability Minérios de ferro Resíduos de mineração Resíduos sólidos - reaproveitamento Durabilidade (Engenharia) |
dc.subject.other.pt_BR.fl_str_mv |
Minérios de ferro Resíduos de mineração Resíduos sólidos - reaproveitamento Durabilidade (Engenharia) |
description |
Brazil is the second-largest global iron ore producer in the world. Consequently, a large volume of iron ore tailings (IOTs) is generated, which is associated with environmental impacts. IOTs present potential to be used as an addition in cementitious compounds, however, few studies assess how the heterogeneity of this waste can limit its utilization as a building material. Thus, the present study aims to assess whether the heterogeneity of IOTs influences mechanical, durability, and microstructural properties when added to the cementitious composite. Four IOTs samples from different origins were collected and added to cementitious composite at 40% addition content. Composites’ mechanical (compressive strength and modulus of elasticity) and durability properties (water absorption, porosity, electrical resistivity, carbonation, and pH pore solution) were correlated to the microstructure of the IOTs. Results showed that the IOTs from different mines exhibited different physical properties and chemical/mineralogical compositions. Moreover, the higher the degree of ore processing, the lower the heterogeneity, iron content, and specific gravity. Although the IOT samples are heterogeneous, this type of tailing can be used as a filler addition in structural mortars. IOT addition tends to improve the mechanical and durability properties. Heterogeneity most significantly influenced the properties in the fresh state, durability, and microstructural properties. The microstructure of the cement matrix tends to be denser in the IOT-added with higher SSA and silica content. Was observed higher-porosity in regions close to the interfacial transition zone in the samples with coarser IOT. |
publishDate |
2022 |
dc.date.issued.fl_str_mv |
2022 |
dc.date.accessioned.fl_str_mv |
2023-11-08T22:25:10Z |
dc.date.available.fl_str_mv |
2023-11-08T22:25:10Z |
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 |
http://hdl.handle.net/1843/60686 |
dc.identifier.doi.pt_BR.fl_str_mv |
https://doi.org/10.1016/j.jmrt.2022.03.070 |
dc.identifier.issn.pt_BR.fl_str_mv |
2214-0697 |
dc.identifier.orcid.pt_BR.fl_str_mv |
https://orcid.org/0000-0003-1076-4832 https://orcid.org/0000-0002-0121-0881 https://orcid.org/0000-0002-8572-5531 https://orcid.org/0000-0001-8444-9451 https://orcid.org/0000-0002-7451-3365 |
url |
https://doi.org/10.1016/j.jmrt.2022.03.070 http://hdl.handle.net/1843/60686 https://orcid.org/0000-0003-1076-4832 https://orcid.org/0000-0002-0121-0881 https://orcid.org/0000-0002-8572-5531 https://orcid.org/0000-0001-8444-9451 https://orcid.org/0000-0002-7451-3365 |
identifier_str_mv |
2214-0697 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of Materials Research and Technology |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais |
dc.publisher.initials.fl_str_mv |
UFMG |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
ENG - DEPARTAMENTO DE ENGENHARIA MATERIAIS E DA CONSTRUÇÃO CIVIL |
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Universidade Federal de Minas Gerais |
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