Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | preprint |
Idioma: | eng |
Título da fonte: | SciELO Preprints |
Texto Completo: | https://preprints.scielo.org/index.php/scielo/preprint/view/273 |
Resumo: | In the last decades, 3D printing has emerged as a promising new paradigm for manufacturing. Even in the civil construction industry, it has gained attention from companies and researchers around the world. Despite of that, the properties of materials applied in the additive manufacturing process are still understudied. One of the challenges is the need to conciliate both high bearing capacity, sparing the need of any confining measures, and the ability of keeping fluidity for enough time, in order to avoid cold joints between the layers. In that scenario, viscosity enhancing admixtures (VEAs) can be a solution, because they are able of promoting flocculation, viscosity gain and yield strength increase, reducing the deposition time in between the layers, which may decrease the formation of cold joints. This research evaluated rheological parameters of four different VEAs and found out that they show potential for increasing the cohesion and buildability of concretes for 3D-printing. The results showed that this effect varies with the type and amount of the admixture adopted and bentonite clay, as a mineral powder material, performed best in comparison to other polymeric VEAs, presenting structuration rates of up to 62% higher than the reference mixture. |
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Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixturesElevação da taxa de estruturação de concretos para impressão 3D: o efeito de aditivos modificadores de viscosidadeimpressão 3Dmanufatura aditivaconcretos extrudáveisaditivos modificadores de viscosidadeargila bentonita3D printingadditive manufacturingextrudable concreteviscosity-enhancing admixturesbentonite clayimpressão 3Dmanufatura aditivaconcretos extrudáveisaditivos modificadores de viscosidadeargila bentonitaIn the last decades, 3D printing has emerged as a promising new paradigm for manufacturing. Even in the civil construction industry, it has gained attention from companies and researchers around the world. Despite of that, the properties of materials applied in the additive manufacturing process are still understudied. One of the challenges is the need to conciliate both high bearing capacity, sparing the need of any confining measures, and the ability of keeping fluidity for enough time, in order to avoid cold joints between the layers. In that scenario, viscosity enhancing admixtures (VEAs) can be a solution, because they are able of promoting flocculation, viscosity gain and yield strength increase, reducing the deposition time in between the layers, which may decrease the formation of cold joints. This research evaluated rheological parameters of four different VEAs and found out that they show potential for increasing the cohesion and buildability of concretes for 3D-printing. The results showed that this effect varies with the type and amount of the admixture adopted and bentonite clay, as a mineral powder material, performed best in comparison to other polymeric VEAs, presenting structuration rates of up to 62% higher than the reference mixture.Nas últimas décadas, a impressão 3D emergiu como um novo e promissor paradigma de fabricação. Mesmo na indústria da construção civil, ela tem ganhado atenção de empresas e pesquisadores de todo o mundo. Apesar disso, as propriedades dos materiais aplicados no processo de manufatura aditiva ainda são pouco estudadas. Um dos desafios está na necessidade de conciliar alta capacidade portante, poupando a necessidade de quaisquer medidas restritivas, com a capacidade de manter a fluidez por tempo suficiente, a fim de evitar juntas frias entre as camadas. Nesse sentido, os aditivos Modificadores de viscosidade (VMAs) podem ser uma solução, pois são capazes de promover floculação, ganho de viscosidade e aumento da tensão de escoamento, reduzindo o tempo de deposição entre as camadas, o que pode diminuir a formação de juntas frias. Esta pesquisa avaliou parâmetros reológicos de quatro VMAs diferentes e descobriu que eles apresentam potencial para aumentar a coesão e a construtibilidade de concretos para impressão 3D. Os resultados mostraram que esse efeito varia com o tipo e a quantidade de aditivo adotado. Particularmente, a argila bentonita, como aditivo mineral em pó, apresentou melhor desempenho em comparação com os VMAs poliméricos, porduzindo taxas de estruturação até 62% superiores à mistura de referência.SciELO PreprintsSciELO PreprintsSciELO Preprints2020-04-30info:eu-repo/semantics/preprintinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://preprints.scielo.org/index.php/scielo/preprint/view/27310.1590/SciELOPreprints.273enghttps://preprints.scielo.org/index.php/scielo/article/view/273/329Copyright (c) 2020 J. A. Hasse, A. P. Rubin, L. C. Quintanilha, W. L. Repettehttps://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/openAccessHasse, J. A. Rubin, A. P. Quintanilha, L. C. Repette, W. L. reponame:SciELO Preprintsinstname:SciELOinstacron:SCI2020-04-30T18:11:18Zoai:ops.preprints.scielo.org:preprint/273Servidor de preprintshttps://preprints.scielo.org/index.php/scieloONGhttps://preprints.scielo.org/index.php/scielo/oaiscielo.submission@scielo.orgopendoar:2020-04-30T18:11:18SciELO Preprints - SciELOfalse |
dc.title.none.fl_str_mv |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures Elevação da taxa de estruturação de concretos para impressão 3D: o efeito de aditivos modificadores de viscosidade |
title |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
spellingShingle |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures Hasse, J. A. impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita 3D printing additive manufacturing extrudable concrete viscosity-enhancing admixtures bentonite clay impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita |
title_short |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
title_full |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
title_fullStr |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
title_full_unstemmed |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
title_sort |
Increasing structuration rate of 3D printable concretes: the effect of viscosity enhancing admixtures |
author |
Hasse, J. A. |
author_facet |
Hasse, J. A. Rubin, A. P. Quintanilha, L. C. Repette, W. L. |
author_role |
author |
author2 |
Rubin, A. P. Quintanilha, L. C. Repette, W. L. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Hasse, J. A. Rubin, A. P. Quintanilha, L. C. Repette, W. L. |
dc.subject.por.fl_str_mv |
impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita 3D printing additive manufacturing extrudable concrete viscosity-enhancing admixtures bentonite clay impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita |
topic |
impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita 3D printing additive manufacturing extrudable concrete viscosity-enhancing admixtures bentonite clay impressão 3D manufatura aditiva concretos extrudáveis aditivos modificadores de viscosidade argila bentonita |
description |
In the last decades, 3D printing has emerged as a promising new paradigm for manufacturing. Even in the civil construction industry, it has gained attention from companies and researchers around the world. Despite of that, the properties of materials applied in the additive manufacturing process are still understudied. One of the challenges is the need to conciliate both high bearing capacity, sparing the need of any confining measures, and the ability of keeping fluidity for enough time, in order to avoid cold joints between the layers. In that scenario, viscosity enhancing admixtures (VEAs) can be a solution, because they are able of promoting flocculation, viscosity gain and yield strength increase, reducing the deposition time in between the layers, which may decrease the formation of cold joints. This research evaluated rheological parameters of four different VEAs and found out that they show potential for increasing the cohesion and buildability of concretes for 3D-printing. The results showed that this effect varies with the type and amount of the admixture adopted and bentonite clay, as a mineral powder material, performed best in comparison to other polymeric VEAs, presenting structuration rates of up to 62% higher than the reference mixture. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-04-30 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/preprint info:eu-repo/semantics/publishedVersion |
format |
preprint |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://preprints.scielo.org/index.php/scielo/preprint/view/273 10.1590/SciELOPreprints.273 |
url |
https://preprints.scielo.org/index.php/scielo/preprint/view/273 |
identifier_str_mv |
10.1590/SciELOPreprints.273 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://preprints.scielo.org/index.php/scielo/article/view/273/329 |
dc.rights.driver.fl_str_mv |
Copyright (c) 2020 J. A. Hasse, A. P. Rubin, L. C. Quintanilha, W. L. Repette https://creativecommons.org/licenses/by/4.0 info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2020 J. A. Hasse, A. P. Rubin, L. C. Quintanilha, W. L. Repette 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 |
SciELO Preprints SciELO Preprints SciELO Preprints |
publisher.none.fl_str_mv |
SciELO Preprints SciELO Preprints SciELO Preprints |
dc.source.none.fl_str_mv |
reponame:SciELO Preprints instname:SciELO instacron:SCI |
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SciELO |
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SCI |
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SciELO Preprints |
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SciELO Preprints |
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SciELO Preprints - SciELO |
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scielo.submission@scielo.org |
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