BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY

Detalhes bibliográficos
Autor(a) principal: Baiao, Denise
Data de Publicação: 2018
Outros Autores: Machado, Camila dos Santos, Condotta, Rodrigo
Tipo de documento: Artigo
Idioma: por
Título da fonte: The Journal of Engineering and Exact Sciences
Texto Completo: https://periodicos.ufv.br/jcec/article/view/2498
Resumo: The present work aims to evaluate the effect of granulometry (particle size and particle size distribution) on the manly physical properties of bidisperse bulk solids, such as bulk density, porosity, cohesion, compressibility and basic flow energy. Therefore, two groups of mixtures comprising commercial sands with different sizes were prepared. The first group (G1) consisted on adding two sort of fine quartz powder (particle undersize of 200 and 600 mesh) into commercial sand 50/60 (coarse). The second group (G2) was formulated adding commercial sand (80/100 and 50/60) added into coarse one (40/50). All mixtures were tested at static and dynamic conditions and at incipient transition (shear test). As result, it was observed higher interactions for smaller quartz’s particles that lead to form agglomerates, increasing bulk porosity and reducing bulk density of non-consolidated mixtures comprising this sort of material. Fine particles at group 1 mixtures have also improved the quality of fluidization, but decrease powder flowability increasing cohesion. The results obtained for group 2 mixtures have revealed no significant changes on bulk properties as increasing fine particle into coarse one. This is could be attributed to the low ratio between fine and coarse particles, changing particle packing, once the interspaces between coarse particles could not be filled with fine one.
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spelling BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITYMISTURAS BI-DISPERSAS DE AREIAS: EFEITOS DA GRANULOMETRIA NO EMPACOTAMENTO E FLUIDEZSandQuartzCohesionInterparticle InteractionsParticle PackingAreia de SílicaAreia de QuartzoCoesãoInteração InterparticularEmpacotamentoThe present work aims to evaluate the effect of granulometry (particle size and particle size distribution) on the manly physical properties of bidisperse bulk solids, such as bulk density, porosity, cohesion, compressibility and basic flow energy. Therefore, two groups of mixtures comprising commercial sands with different sizes were prepared. The first group (G1) consisted on adding two sort of fine quartz powder (particle undersize of 200 and 600 mesh) into commercial sand 50/60 (coarse). The second group (G2) was formulated adding commercial sand (80/100 and 50/60) added into coarse one (40/50). All mixtures were tested at static and dynamic conditions and at incipient transition (shear test). As result, it was observed higher interactions for smaller quartz’s particles that lead to form agglomerates, increasing bulk porosity and reducing bulk density of non-consolidated mixtures comprising this sort of material. Fine particles at group 1 mixtures have also improved the quality of fluidization, but decrease powder flowability increasing cohesion. The results obtained for group 2 mixtures have revealed no significant changes on bulk properties as increasing fine particle into coarse one. This is could be attributed to the low ratio between fine and coarse particles, changing particle packing, once the interspaces between coarse particles could not be filled with fine one.Este trabalho teve como o objetivo avaliar o efeito da granulometria (tamanho das partículas e faixa de distribuição granulométrica) nas principais propriedades físicas de leitos bi dispersos, tais como densidade aparente, porosidade, coesão, compressibilidade e energia básica de fluxo. Para tanto foram confeccionados dois grupos de misturas envolvendo areias comerciais com diferentes granulometrias. O primeiro grupo (G1) consistiu na incorporação de dois tipos de areias de quartzo (partículas menores que mesh 200 e mesh 600) em um de tipo de areia de sílica comercial 50/60 (grosso). O segundo grupo (G2) constituiu em misturas de areias de sílica 40/50 (grosso) mediante adição de partículas de menor granulometria de areia de sílica 50/60 e 80/100. Todas as misturas foram analisadas em condições estáticas, dinâmicas e na iminência do movimento (cisalhamento). Como resultado observou-se uma maior tendência por parte das partículas de tamanho reduzido em formar aglomerados, aumentando a porosidade e diminuindo densidade aparente quando não consolidadas. A presença de partículas de tamanho reduzido nas misturas do grupo 1 também melhorou a fluidização das misturas deste grupo, mas prejudicou a fluidez aumentando a coesão do meio. Os resultados obtidos para o grupo 2 de misturas não apresentaram diferenças significativas em suas características com a incorporações de finos. Isto se deve a baixa relação entre o tamanho das partículas, de maneira que as partículas menores não cabem nos interstícios das partículas maiores.The present work aims to evaluate the effect of granulometry (particle size and particle size distribution) on the manly physical properties of bidisperse bulk solids, such as bulk density, porosity, cohesion, compressibility and basic flow energy. Therefore, two groups of mixtures comprising commercial sands with different sizes were prepared. The first group (G1) consisted on adding two sort of fine quartz powder (particle undersize of 200 and 600 mesh) into commercial sand 50/60 (coarse). The second group (G2) was formulated adding commercial sand (80/100 and 50/60) added into coarse one (40/50). All mixtures were tested at static and dynamic conditions and at incipient transition (shear test). As result, it was observed higher interactions for smaller quartz’s particles that lead to form agglomerates, increasing bulk porosity and reducing bulk density of non-consolidated mixtures comprising this sort of material. Fine particles at group 1 mixtures have also improved the quality of fluidization, but decrease powder flowability increasing cohesion. The results obtained for group 2 mixtures have revealed no significant changes on bulk properties as increasing fine particle into coarse one. This is could be attributed to the low ratio between fine and coarse particles, changing particle packing, once the interspaces between coarse particles could not be filled with fine one.Universidade Federal de Viçosa - UFV2018-03-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/jcec/article/view/249810.18540/jcecvl4iss1pp0117-0126The Journal of Engineering and Exact Sciences; Vol. 4 No. 1 (2018); 0117-0126The Journal of Engineering and Exact Sciences; Vol. 4 Núm. 1 (2018); 0117-0126The Journal of Engineering and Exact Sciences; v. 4 n. 1 (2018); 0117-01262527-1075reponame:The Journal of Engineering and Exact Sciencesinstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/jcec/article/view/2498/1049Baiao, DeniseMachado, Camila dos SantosCondotta, Rodrigoinfo:eu-repo/semantics/openAccess2018-12-05T12:57:24Zoai:ojs.periodicos.ufv.br:article/2498Revistahttp://www.seer.ufv.br/seer/rbeq2/index.php/req2/oai2527-10752527-1075opendoar:2018-12-05T12:57:24The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV)false
dc.title.none.fl_str_mv BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
MISTURAS BI-DISPERSAS DE AREIAS: EFEITOS DA GRANULOMETRIA NO EMPACOTAMENTO E FLUIDEZ
title BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
spellingShingle BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
Baiao, Denise
Sand
Quartz
Cohesion
Interparticle Interactions
Particle Packing
Areia de Sílica
Areia de Quartzo
Coesão
Interação Interparticular
Empacotamento
title_short BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
title_full BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
title_fullStr BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
title_full_unstemmed BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
title_sort BIDISPERSE MIXTURES OF SAND: EFFECTS OF GRANULOMETRY ON ITS PACKING AND FLOWABILITY
author Baiao, Denise
author_facet Baiao, Denise
Machado, Camila dos Santos
Condotta, Rodrigo
author_role author
author2 Machado, Camila dos Santos
Condotta, Rodrigo
author2_role author
author
dc.contributor.author.fl_str_mv Baiao, Denise
Machado, Camila dos Santos
Condotta, Rodrigo
dc.subject.por.fl_str_mv Sand
Quartz
Cohesion
Interparticle Interactions
Particle Packing
Areia de Sílica
Areia de Quartzo
Coesão
Interação Interparticular
Empacotamento
topic Sand
Quartz
Cohesion
Interparticle Interactions
Particle Packing
Areia de Sílica
Areia de Quartzo
Coesão
Interação Interparticular
Empacotamento
description The present work aims to evaluate the effect of granulometry (particle size and particle size distribution) on the manly physical properties of bidisperse bulk solids, such as bulk density, porosity, cohesion, compressibility and basic flow energy. Therefore, two groups of mixtures comprising commercial sands with different sizes were prepared. The first group (G1) consisted on adding two sort of fine quartz powder (particle undersize of 200 and 600 mesh) into commercial sand 50/60 (coarse). The second group (G2) was formulated adding commercial sand (80/100 and 50/60) added into coarse one (40/50). All mixtures were tested at static and dynamic conditions and at incipient transition (shear test). As result, it was observed higher interactions for smaller quartz’s particles that lead to form agglomerates, increasing bulk porosity and reducing bulk density of non-consolidated mixtures comprising this sort of material. Fine particles at group 1 mixtures have also improved the quality of fluidization, but decrease powder flowability increasing cohesion. The results obtained for group 2 mixtures have revealed no significant changes on bulk properties as increasing fine particle into coarse one. This is could be attributed to the low ratio between fine and coarse particles, changing particle packing, once the interspaces between coarse particles could not be filled with fine one.
publishDate 2018
dc.date.none.fl_str_mv 2018-03-02
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv https://periodicos.ufv.br/jcec/article/view/2498
10.18540/jcecvl4iss1pp0117-0126
url https://periodicos.ufv.br/jcec/article/view/2498
identifier_str_mv 10.18540/jcecvl4iss1pp0117-0126
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://periodicos.ufv.br/jcec/article/view/2498/1049
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 Universidade Federal de Viçosa - UFV
publisher.none.fl_str_mv Universidade Federal de Viçosa - UFV
dc.source.none.fl_str_mv The Journal of Engineering and Exact Sciences; Vol. 4 No. 1 (2018); 0117-0126
The Journal of Engineering and Exact Sciences; Vol. 4 Núm. 1 (2018); 0117-0126
The Journal of Engineering and Exact Sciences; v. 4 n. 1 (2018); 0117-0126
2527-1075
reponame:The Journal of Engineering and Exact Sciences
instname:Universidade Federal de Viçosa (UFV)
instacron:UFV
instname_str Universidade Federal de Viçosa (UFV)
instacron_str UFV
institution UFV
reponame_str The Journal of Engineering and Exact Sciences
collection The Journal of Engineering and Exact Sciences
repository.name.fl_str_mv The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV)
repository.mail.fl_str_mv
_version_ 1808845244302622720

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