Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates

Detalhes bibliográficos
Autor(a) principal: Medeiros, Brunna Lima de Almeida Victor
Data de Publicação: 2021
Outros Autores: Fernandes, Jucielle Veras, Costa, Fabiana Pereira da, Barros, Sâmea Valensca Alves, Rodrigues, Alisson Mendes, Neves, Gelmires de Araújo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/22209
Resumo: This work produced coating mortars with scheelite tailings (ST) in total replacement of natural sand aggregate. The chemical and mineralogical composition of the scheelite tailings was determined by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Mortar samples with a mass proportion of 1:2:9 (cement: lime: sand/scheelite tailings) were prepared with and without the scheelite tailings. The mortars were evaluated by mercury intrusion porosimetry and compressive and flexural strength tests. The resistance to the alkali-aggregate reaction was assessed from the bar expansion test and by scanning electron microscopy (SEM) in the crack and pore regions. The results indicate that until the 22nd day, the scheelite tailings were not reactive; however, in 28 days, the expansion was deleterious. SEM images did not detect the presence of amorphous alkaline gel characteristic of the alkali-aggregate reaction. Therefore, although the mortar with scheelite tailings aggregate has shown the deleterious potential to 28 days, mechanical tests indicate that it has the potential to be used as a coating mortar.  
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spelling Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregatesResistencia a la reacción álcali-agregado de morteros sostenibles producidos con relaves de scheelita para reemplazar los agregados naturales de arena Resistência à reação álcali-agregado de argamassas sustentáveis produzidas com rejeitos de scheelita em substituição aos agregados de areia naturalRelaves de ScheelitaAgregado alternativoagregado alternativomortero de revestimientoMortero de revestimientoReacción álcali-agregado.reacción álcali-agregadoScheelite tailingsalternative aggregateAlternative aggregateCoating mortarcoating mortarAlkali-aggregate reaction.alkali-aggregate reactionRejeito de scheelitaAgregado alternativoagregado alternativoArgamassa de revestimentoargamassa de revestimentoReação álcali-agregado.reação álcali-agregadoThis work produced coating mortars with scheelite tailings (ST) in total replacement of natural sand aggregate. The chemical and mineralogical composition of the scheelite tailings was determined by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Mortar samples with a mass proportion of 1:2:9 (cement: lime: sand/scheelite tailings) were prepared with and without the scheelite tailings. The mortars were evaluated by mercury intrusion porosimetry and compressive and flexural strength tests. The resistance to the alkali-aggregate reaction was assessed from the bar expansion test and by scanning electron microscopy (SEM) in the crack and pore regions. The results indicate that until the 22nd day, the scheelite tailings were not reactive; however, in 28 days, the expansion was deleterious. SEM images did not detect the presence of amorphous alkaline gel characteristic of the alkali-aggregate reaction. Therefore, although the mortar with scheelite tailings aggregate has shown the deleterious potential to 28 days, mechanical tests indicate that it has the potential to be used as a coating mortar.  En este trabajo, se produjeron morteros de revestimiento con relaves de scheelita (ST) en reemplazo total del agregado de arena natural. La composición química y mineralógica de los relaves de scheelita se determinó mediante difracción de rayos X (DRX) y fluorescencia de rayos X (FRX). Se prepararon muestras de mortero con una relación de masa de 1: 2: 9 (cemento: cal: arena / relaves de scheelita) con y sin los relaves de scheelita. Los morteros fueron evaluados mediante porosimetría de intrusión de mercurio y pruebas de resistencia a la compresión y flexión. La resistencia a la reacción álcali-agregado se evaluó a partir de la prueba de expansión y mediante microscopía electrónica de barrido (SEM) en las regiones de grietas y poros. Los resultados indican que hasta el día 22 los relaves de scheelita no son reactivos, sin embargo, en 28 días, la expansión fue deletérea. Las imágenes SEM no detectaron la presencia de gel alcalino amorfo característico de la reacción álcali-agregado. Por lo tanto, aunque el mortero con relaves de scheelita ha mostrado un potencial deletéreo durante a los 28 días, las pruebas mecánicas indican que tiene potencial para ser utilizado como mortero de revestimiento.Neste trabalho, argamassas de revestimento foram produzidas com rejeitos de scheelita (RS) em substituição total ao agregado de areia natural. A composição química e mineralógica do rejeito de scheelita foi determinada por difração de raios-X (DRX) e fluorescência de raios-X (FRX). Amostras de argamassa com proporção em massa de 1:2:9 (cimento: cal: areia/rejeito de scheelita) foram preparadas com e sem o rejeito de scheelita. As argamassas foram avaliadas por porosimetria de intrusão de mercúrio e testes de resistência a compressão e a flexão. A resistência a reação álcali-agregado foi avaliada a partir do teste de expansão de barra e por microscopia eletrônica de varredura (MEV) nas regiões de trincas e poros. Os resultados indicam que até o 22º dia os rejeitos de scheelita não são reativos, no entanto, em 28 dias, a expansão foi deletéria. As imagens de MEV não constataram a presença de gel alcalino amorfo característico da reação álcali-agregado. Portanto, apesar da argamassa com agregado de rejeito de scheelita ter apresentado potencial deletério acima de 28 dias, os testes mecânicos indicam que ela possui potencial para ser utilizada como argamassa de revestimento.Research, Society and Development2021-11-14info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/2220910.33448/rsd-v10i14.22209Research, Society and Development; Vol. 10 No. 14; e567101422209Research, Society and Development; Vol. 10 Núm. 14; e567101422209Research, Society and Development; v. 10 n. 14; e5671014222092525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIenghttps://rsdjournal.org/index.php/rsd/article/view/22209/19906Copyright (c) 2021 Brunna Lima de Almeida Victor Medeiros; Jucielle Veras Fernandes; Fabiana Pereira da Costa; Sâmea Valensca Alves Barros; Alisson Mendes Rodrigues; Gelmires de Araújo Neveshttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessMedeiros, Brunna Lima de Almeida Victor Fernandes, Jucielle VerasCosta, Fabiana Pereira daBarros, Sâmea Valensca AlvesRodrigues, Alisson MendesNeves, Gelmires de Araújo2021-12-04T11:48:39Zoai:ojs.pkp.sfu.ca:article/22209Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:41:25.977430Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
Resistencia a la reacción álcali-agregado de morteros sostenibles producidos con relaves de scheelita para reemplazar los agregados naturales de arena
Resistência à reação álcali-agregado de argamassas sustentáveis produzidas com rejeitos de scheelita em substituição aos agregados de areia natural
title Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
spellingShingle Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
Medeiros, Brunna Lima de Almeida Victor
Relaves de Scheelita
Agregado alternativo
agregado alternativo
mortero de revestimiento
Mortero de revestimiento
Reacción álcali-agregado.
reacción álcali-agregado
Scheelite tailings
alternative aggregate
Alternative aggregate
Coating mortar
coating mortar
Alkali-aggregate reaction.
alkali-aggregate reaction
Rejeito de scheelita
Agregado alternativo
agregado alternativo
Argamassa de revestimento
argamassa de revestimento
Reação álcali-agregado.
reação álcali-agregado
title_short Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
title_full Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
title_fullStr Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
title_full_unstemmed Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
title_sort Resistance to the alkali-aggregate reaction of sustainable mortars produced with scheelite tailings in replacing natural sand aggregates
author Medeiros, Brunna Lima de Almeida Victor
author_facet Medeiros, Brunna Lima de Almeida Victor
Fernandes, Jucielle Veras
Costa, Fabiana Pereira da
Barros, Sâmea Valensca Alves
Rodrigues, Alisson Mendes
Neves, Gelmires de Araújo
author_role author
author2 Fernandes, Jucielle Veras
Costa, Fabiana Pereira da
Barros, Sâmea Valensca Alves
Rodrigues, Alisson Mendes
Neves, Gelmires de Araújo
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Medeiros, Brunna Lima de Almeida Victor
Fernandes, Jucielle Veras
Costa, Fabiana Pereira da
Barros, Sâmea Valensca Alves
Rodrigues, Alisson Mendes
Neves, Gelmires de Araújo
dc.subject.por.fl_str_mv Relaves de Scheelita
Agregado alternativo
agregado alternativo
mortero de revestimiento
Mortero de revestimiento
Reacción álcali-agregado.
reacción álcali-agregado
Scheelite tailings
alternative aggregate
Alternative aggregate
Coating mortar
coating mortar
Alkali-aggregate reaction.
alkali-aggregate reaction
Rejeito de scheelita
Agregado alternativo
agregado alternativo
Argamassa de revestimento
argamassa de revestimento
Reação álcali-agregado.
reação álcali-agregado
topic Relaves de Scheelita
Agregado alternativo
agregado alternativo
mortero de revestimiento
Mortero de revestimiento
Reacción álcali-agregado.
reacción álcali-agregado
Scheelite tailings
alternative aggregate
Alternative aggregate
Coating mortar
coating mortar
Alkali-aggregate reaction.
alkali-aggregate reaction
Rejeito de scheelita
Agregado alternativo
agregado alternativo
Argamassa de revestimento
argamassa de revestimento
Reação álcali-agregado.
reação álcali-agregado
description This work produced coating mortars with scheelite tailings (ST) in total replacement of natural sand aggregate. The chemical and mineralogical composition of the scheelite tailings was determined by X-ray diffraction (XRD) and X-ray fluorescence (XRF). Mortar samples with a mass proportion of 1:2:9 (cement: lime: sand/scheelite tailings) were prepared with and without the scheelite tailings. The mortars were evaluated by mercury intrusion porosimetry and compressive and flexural strength tests. The resistance to the alkali-aggregate reaction was assessed from the bar expansion test and by scanning electron microscopy (SEM) in the crack and pore regions. The results indicate that until the 22nd day, the scheelite tailings were not reactive; however, in 28 days, the expansion was deleterious. SEM images did not detect the presence of amorphous alkaline gel characteristic of the alkali-aggregate reaction. Therefore, although the mortar with scheelite tailings aggregate has shown the deleterious potential to 28 days, mechanical tests indicate that it has the potential to be used as a coating mortar.  
publishDate 2021
dc.date.none.fl_str_mv 2021-11-14
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://rsdjournal.org/index.php/rsd/article/view/22209
10.33448/rsd-v10i14.22209
url https://rsdjournal.org/index.php/rsd/article/view/22209
identifier_str_mv 10.33448/rsd-v10i14.22209
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/22209/19906
dc.rights.driver.fl_str_mv https://creativecommons.org/licenses/by/4.0
info:eu-repo/semantics/openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/4.0
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 10 No. 14; e567101422209
Research, Society and Development; Vol. 10 Núm. 14; e567101422209
Research, Society and Development; v. 10 n. 14; e567101422209
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
_version_ 1797052834452078592

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