Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures

Detalhes bibliográficos
Autor(a) principal: Cipriano, Marcelly Pires de Sousa Ramos
Data de Publicação: 2024
Tipo de documento: Dissertação
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
Texto Completo: http://repositorio.ufes.br/handle/10/17443
Resumo: Global mining generates approximately 60 billion tons of waste each year, mostly stored in tailings dams, causing environmental damage and threatening nearby communities. To address this issue in alignment with circular economy principles, this study explored using the fine fraction of iron ore tailings (<0.075 mm) as a mineral addition for producing self-compacting mixtures, which require a substantial fines content. The study assessed mortars with 10%, 20%, and 30% mining filler (MF) replacing cement, comparing them to equivalent limestone filler (LF) mixtures and a reference without additives. The properties of the additions were assessed using X-ray diffraction, X-ray fluorescence, laser granulometry, scanning electron microscopy, methylene blue test, R3 test, and furnace-based gravimetry test. Fresh state analysis on mortars included specific gravity, flow table, and mini V-funnel tests. In the hardened state, tests covered compressive and flexural strength, ultrasonic pulse velocity, porosity, scanning electron microscopy, and mercury intrusion porosimetry (MIP). Isothermal calorimetry was also conducted on pastes to evaluate the cement hydration kinetics. It was found that the additions anticipated the induction period compared to the reference, with minimal impact on its duration. Otherwise, the heat release was most affected, with LF increasing it by 8%, 14%, and 17% at 10%, 20%, and 30% content, and MF rising it by 9%, 13%, and 22%. Mortars with additions showed improved spreading compared to the reference, with MF enhancing it by approximately 8%, 10%, and 15% at 10%, 20%, and 30% replacements, surpassing limestone filler at the same levels. MF, at 10%, 20%, and 30% replacements, reduced V-funnel times by around 30%, 31%, and 27% respectively compared to LF. At 28 days, mortars with MF showed around 6%, 4%, and 2% higher compressive strength than mLF at 10%, 20%, and 30% substitutions respectively. The mortar with 20% of MF incorporation had a cement index almost 13% lower than the reference mixture, implying a reduction of 65 kg of cement and the incorporation of 133 kg of tailing for a mortar with a strength of 50 MPa. MIP results showed that this same mixture had a pore volume >200 nm 50% smaller than that with 20% of LF, with a slightly lower total porosity. Overall, the use of the fine fraction of iron ore tailings as mineral addition in self-compacting mixtures is feasible for contents up to 30% and environmentally advantageous compared to the use of LF.
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spelling 124Schankoski, Rudiele Aparecidahttps://orcid.org/0000-0003-1306-3986http://lattes.cnpq.br/3391191554375710Cipriano, Marcelly Pires de Sousa Ramoshttps://orcid.org/0000-0002-1106-1787http://lattes.cnpq.br/3168058256380210Oliveira, Alexandre Lima dehttps://orcid.org/0000-0002-1908-6479http://lattes.cnpq.br/6588306695770934Bezerra, Augusto Cesar da Silvahttps://orcid.org/0000-0003-1670-2376http://lattes.cnpq.br/0783179484317105Matos, Paulo Ricardo dehttps://orcid.org/0000-0002-3695-1356http://lattes.cnpq.br/51220299728167672024-06-21T11:17:11Z2024-06-21T11:17:11Z2024-02-08Global mining generates approximately 60 billion tons of waste each year, mostly stored in tailings dams, causing environmental damage and threatening nearby communities. To address this issue in alignment with circular economy principles, this study explored using the fine fraction of iron ore tailings (<0.075 mm) as a mineral addition for producing self-compacting mixtures, which require a substantial fines content. The study assessed mortars with 10%, 20%, and 30% mining filler (MF) replacing cement, comparing them to equivalent limestone filler (LF) mixtures and a reference without additives. The properties of the additions were assessed using X-ray diffraction, X-ray fluorescence, laser granulometry, scanning electron microscopy, methylene blue test, R3 test, and furnace-based gravimetry test. Fresh state analysis on mortars included specific gravity, flow table, and mini V-funnel tests. In the hardened state, tests covered compressive and flexural strength, ultrasonic pulse velocity, porosity, scanning electron microscopy, and mercury intrusion porosimetry (MIP). Isothermal calorimetry was also conducted on pastes to evaluate the cement hydration kinetics. It was found that the additions anticipated the induction period compared to the reference, with minimal impact on its duration. Otherwise, the heat release was most affected, with LF increasing it by 8%, 14%, and 17% at 10%, 20%, and 30% content, and MF rising it by 9%, 13%, and 22%. Mortars with additions showed improved spreading compared to the reference, with MF enhancing it by approximately 8%, 10%, and 15% at 10%, 20%, and 30% replacements, surpassing limestone filler at the same levels. MF, at 10%, 20%, and 30% replacements, reduced V-funnel times by around 30%, 31%, and 27% respectively compared to LF. At 28 days, mortars with MF showed around 6%, 4%, and 2% higher compressive strength than mLF at 10%, 20%, and 30% substitutions respectively. The mortar with 20% of MF incorporation had a cement index almost 13% lower than the reference mixture, implying a reduction of 65 kg of cement and the incorporation of 133 kg of tailing for a mortar with a strength of 50 MPa. MIP results showed that this same mixture had a pore volume >200 nm 50% smaller than that with 20% of LF, with a slightly lower total porosity. Overall, the use of the fine fraction of iron ore tailings as mineral addition in self-compacting mixtures is feasible for contents up to 30% and environmentally advantageous compared to the use of LF.resumoFAPESTexthttp://repositorio.ufes.br/handle/10/17443engenUniversidade Federal do Espírito SantoMestrado em Engenharia CivilPrograma de Pós-Graduação Engenharia Civil UFESBRCentro Tecnológicosubject.br-rjbnÁrea(s) do conhecimento do documento (Tabela CNPq)Iron ore tailingself-compacting mortarssupplementary cementitious materialmechanical propertiesworkabilitysustainabilityFine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixturestitle.alternativeinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)instname:Universidade Federal do Espírito Santo (UFES)instacron:UFESemail@ufes.brORIGINALMarcellyPiresdeSousaRamosCipriano-2024-dissertacao.pdfMarcellyPiresdeSousaRamosCipriano-2024-dissertacao.pdfapplication/pdf5842841http://repositorio.ufes.br/bitstreams/b93ea83a-8481-41e3-a561-30ba106efaa6/download2ddab6ddc6b372a93928d9576fd86714MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.ufes.br/bitstreams/16fce643-ab3f-42a7-81cf-b5ff41704054/download8a4605be74aa9ea9d79846c1fba20a33MD5210/174432024-08-29 11:25:08.826oai:repositorio.ufes.br:10/17443http://repositorio.ufes.brRepositório InstitucionalPUBhttp://repositorio.ufes.br/oai/requestopendoar:21082024-10-15T17:59:11.582067Repositório Institucional da Universidade Federal do Espírito Santo (riUfes) - Universidade Federal do Espírito Santo (UFES)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
dc.title.none.fl_str_mv Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
dc.title.alternative.none.fl_str_mv title.alternative
title Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
spellingShingle Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
Cipriano, Marcelly Pires de Sousa Ramos
Área(s) do conhecimento do documento (Tabela CNPq)
Iron ore tailing
self-compacting mortars
supplementary cementitious material
mechanical properties
workability
sustainability
subject.br-rjbn
title_short Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
title_full Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
title_fullStr Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
title_full_unstemmed Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
title_sort Fine Fraction of Iron Ore Tailings as Mineral Addition in Self-Compacting Mixtures
author Cipriano, Marcelly Pires de Sousa Ramos
author_facet Cipriano, Marcelly Pires de Sousa Ramos
author_role author
dc.contributor.authorID.none.fl_str_mv https://orcid.org/0000-0002-1106-1787
dc.contributor.authorLattes.none.fl_str_mv http://lattes.cnpq.br/3168058256380210
dc.contributor.advisor1.fl_str_mv Schankoski, Rudiele Aparecida
dc.contributor.advisor1ID.fl_str_mv https://orcid.org/0000-0003-1306-3986
dc.contributor.advisor1Lattes.fl_str_mv http://lattes.cnpq.br/3391191554375710
dc.contributor.author.fl_str_mv Cipriano, Marcelly Pires de Sousa Ramos
dc.contributor.referee1.fl_str_mv Oliveira, Alexandre Lima de
dc.contributor.referee1ID.fl_str_mv https://orcid.org/0000-0002-1908-6479
dc.contributor.referee1Lattes.fl_str_mv http://lattes.cnpq.br/6588306695770934
dc.contributor.referee2.fl_str_mv Bezerra, Augusto Cesar da Silva
dc.contributor.referee2ID.fl_str_mv https://orcid.org/0000-0003-1670-2376
dc.contributor.referee2Lattes.fl_str_mv http://lattes.cnpq.br/0783179484317105
dc.contributor.referee3.fl_str_mv Matos, Paulo Ricardo de
dc.contributor.referee3ID.fl_str_mv https://orcid.org/0000-0002-3695-1356
dc.contributor.referee3Lattes.fl_str_mv http://lattes.cnpq.br/5122029972816767
contributor_str_mv Schankoski, Rudiele Aparecida
Oliveira, Alexandre Lima de
Bezerra, Augusto Cesar da Silva
Matos, Paulo Ricardo de
dc.subject.cnpq.fl_str_mv Área(s) do conhecimento do documento (Tabela CNPq)
topic Área(s) do conhecimento do documento (Tabela CNPq)
Iron ore tailing
self-compacting mortars
supplementary cementitious material
mechanical properties
workability
sustainability
subject.br-rjbn
dc.subject.por.fl_str_mv Iron ore tailing
self-compacting mortars
supplementary cementitious material
mechanical properties
workability
sustainability
dc.subject.br-rjbn.none.fl_str_mv subject.br-rjbn
description Global mining generates approximately 60 billion tons of waste each year, mostly stored in tailings dams, causing environmental damage and threatening nearby communities. To address this issue in alignment with circular economy principles, this study explored using the fine fraction of iron ore tailings (<0.075 mm) as a mineral addition for producing self-compacting mixtures, which require a substantial fines content. The study assessed mortars with 10%, 20%, and 30% mining filler (MF) replacing cement, comparing them to equivalent limestone filler (LF) mixtures and a reference without additives. The properties of the additions were assessed using X-ray diffraction, X-ray fluorescence, laser granulometry, scanning electron microscopy, methylene blue test, R3 test, and furnace-based gravimetry test. Fresh state analysis on mortars included specific gravity, flow table, and mini V-funnel tests. In the hardened state, tests covered compressive and flexural strength, ultrasonic pulse velocity, porosity, scanning electron microscopy, and mercury intrusion porosimetry (MIP). Isothermal calorimetry was also conducted on pastes to evaluate the cement hydration kinetics. It was found that the additions anticipated the induction period compared to the reference, with minimal impact on its duration. Otherwise, the heat release was most affected, with LF increasing it by 8%, 14%, and 17% at 10%, 20%, and 30% content, and MF rising it by 9%, 13%, and 22%. Mortars with additions showed improved spreading compared to the reference, with MF enhancing it by approximately 8%, 10%, and 15% at 10%, 20%, and 30% replacements, surpassing limestone filler at the same levels. MF, at 10%, 20%, and 30% replacements, reduced V-funnel times by around 30%, 31%, and 27% respectively compared to LF. At 28 days, mortars with MF showed around 6%, 4%, and 2% higher compressive strength than mLF at 10%, 20%, and 30% substitutions respectively. The mortar with 20% of MF incorporation had a cement index almost 13% lower than the reference mixture, implying a reduction of 65 kg of cement and the incorporation of 133 kg of tailing for a mortar with a strength of 50 MPa. MIP results showed that this same mixture had a pore volume >200 nm 50% smaller than that with 20% of LF, with a slightly lower total porosity. Overall, the use of the fine fraction of iron ore tailings as mineral addition in self-compacting mixtures is feasible for contents up to 30% and environmentally advantageous compared to the use of LF.
publishDate 2024
dc.date.accessioned.fl_str_mv 2024-06-21T11:17:11Z
dc.date.available.fl_str_mv 2024-06-21T11:17:11Z
dc.date.issued.fl_str_mv 2024-02-08
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dc.publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Civil
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dc.publisher.initials.fl_str_mv UFES
dc.publisher.country.fl_str_mv BR
dc.publisher.department.fl_str_mv Centro Tecnológico
publisher.none.fl_str_mv Universidade Federal do Espírito Santo
Mestrado em Engenharia Civil
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