Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias
Ano de defesa: | 2023 |
---|---|
Autor(a) principal: | |
Orientador(a): | |
Banca de defesa: | , |
Tipo de documento: | Dissertação |
Tipo de acesso: | Acesso aberto |
Idioma: | por |
Instituição de defesa: |
Universidade Federal de Santa Maria
Centro de Tecnologia |
Programa de Pós-Graduação: |
Programa de Pós-Graduação em Engenharia Civil
|
Departamento: |
Engenharia Civil
|
País: |
Brasil
|
Palavras-chave em Português: | |
Palavras-chave em Inglês: | |
Área do conhecimento CNPq: | |
Link de acesso: | http://repositorio.ufsm.br/handle/1/30100 |
Resumo: | The generation of waste from different sectors of the Brazilian economy has generated studies and research related to the consumption and disposal of the most varied products. In this context, the industries of the footwear sector, traditional in the State of Rio Grande do Sul, are inserted, which have the need to seek sustainable actions in the reuse of leftover raw materials from the production of footwear. Therefore, this work aimed to evaluate the use of a lightweight aggregate based on polyester waste and PVC laminate extruded with recycled polystyrene in cementitious matrices. Reference mortars were prepared with a mass ratio of 1:3 (cement: dry sand) and a water/cement ratio (w/c) of 0.48. Another four mortars were prepared with levels of replacement of quartz sand, in volume, by light aggregate, at 25%, 50%, 75% and 100%. The results in the fresh state of the mortar show that the workability reduced with the increase in the percentage of light aggregate in the mortar. In the hardened state, increasing the percentage of lightweight aggregate led to an inverse behavior for compressive strength and specific mass, and a direct behavior for water absorption, porosity and void ratio. With the aid of the scanning electron microscope (SEM) it was observed that the thickness of the microcrack between the quartz sand and the hydrated cement paste was smaller when compared to the thickness of the microcrack between the lightweight aggregate and the cement paste after compressive strength tests , which indicates that the lightweight aggregate makes this region less resistant, which corroborates the 86% drop in compressive strength at 28 days between the reference matrix and the matrix containing 100% lightweight aggregate. By energy dispersive spectroscopy (EDS) the chemical elements present on the surface of the samples were verified. Fourier Transform Infrared Spectroscopy (FTIR) identified the characteristic functional groups of materials and cementitious matrices at 7 and 28 days. With the aid of X-ray diffraction (XRD) it was observed that the intensity of the characteristic peaks of quartz reduced as there was an increase in the replacement of quartz sand by light aggregate in the cementitious matrices. |
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2023-08-28T19:35:08Z2023-08-28T19:35:08Z2023-07-21http://repositorio.ufsm.br/handle/1/30100The generation of waste from different sectors of the Brazilian economy has generated studies and research related to the consumption and disposal of the most varied products. In this context, the industries of the footwear sector, traditional in the State of Rio Grande do Sul, are inserted, which have the need to seek sustainable actions in the reuse of leftover raw materials from the production of footwear. Therefore, this work aimed to evaluate the use of a lightweight aggregate based on polyester waste and PVC laminate extruded with recycled polystyrene in cementitious matrices. Reference mortars were prepared with a mass ratio of 1:3 (cement: dry sand) and a water/cement ratio (w/c) of 0.48. Another four mortars were prepared with levels of replacement of quartz sand, in volume, by light aggregate, at 25%, 50%, 75% and 100%. The results in the fresh state of the mortar show that the workability reduced with the increase in the percentage of light aggregate in the mortar. In the hardened state, increasing the percentage of lightweight aggregate led to an inverse behavior for compressive strength and specific mass, and a direct behavior for water absorption, porosity and void ratio. With the aid of the scanning electron microscope (SEM) it was observed that the thickness of the microcrack between the quartz sand and the hydrated cement paste was smaller when compared to the thickness of the microcrack between the lightweight aggregate and the cement paste after compressive strength tests , which indicates that the lightweight aggregate makes this region less resistant, which corroborates the 86% drop in compressive strength at 28 days between the reference matrix and the matrix containing 100% lightweight aggregate. By energy dispersive spectroscopy (EDS) the chemical elements present on the surface of the samples were verified. Fourier Transform Infrared Spectroscopy (FTIR) identified the characteristic functional groups of materials and cementitious matrices at 7 and 28 days. With the aid of X-ray diffraction (XRD) it was observed that the intensity of the characteristic peaks of quartz reduced as there was an increase in the replacement of quartz sand by light aggregate in the cementitious matrices.A geração de resíduos provenientes dos diversos setores da economia brasileira tem gerado estudos e pesquisas relacionados ao consumo e descarte dos mais variados produtos. Neste contexto, inserem-se as indústrias do setor calçadista, tradicionais no Estado do Rio Grande do Sul, as quais têm a necessidade de buscar ações sustentáveis no reaproveitamento das sobras de matérias-primas da produção de calçados. Portanto, este trabalho teve como objetivo avaliar o uso de um agregado leve à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno reciclado em matrizes cimentícias. Foram preparadas argamassas referência com traço, em massa, de 1:3 (cimento: areia seca) e relação água/cimento (a/c) de 0,48. Outras quatro argamassas foram preparadas com teores de substituição da areia quartzosa, em volume, pelo agregado leve, em 25%, 50%, 75% e 100%. Os resultados no estado fresco da argamassa mostram que a trabalhabilidade reduziu com o aumento do percentual do agregado leve nas argamassas. No estado endurecido, o aumento do percentual do agregado leve conduziu a um comportamento inverso para a resistência à compressão e massa específica, e um comportamento direto para a absorção de água, porosidade e índice de vazios. Com auxílio do microscópio eletrônico de varredura (MEV) observou-se que a espessura da microfissura entre a areia quartzosa e a pasta de cimento hidratada foi menor quando comparada a espessura da microfissura entre o agregado leve e pasta de cimento após ensaios de resistência à compressão, o que indica que o agregado leve torna esta região menos resistente, o que corrobora com a queda de 86% na resistência à compressão aos 28 dias entre a matriz referência e a matriz contendo 100% de agregado leve. Pela espectroscopia por energia dispersiva (EDS) foram verificados os elementos químicos presentes na superfície das amostras. Por espectroscopia no Infravermelho com Transformada de Fourier (FTIR) foram identificados os grupos funcionais característicos dos materiais e das matrizes cimentícias aos 7 e 28 dias. Com o auxílio da difração de raios X (DRX) observou-se que a intensidade dos picos característicos de quartzo reduziu na medida que houve o aumento da substituição da areia quartzosa pelo agregado leve nas matrizes cimentícias.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESporUniversidade Federal de Santa MariaCentro de TecnologiaPrograma de Pós-Graduação em Engenharia CivilUFSMBrasilEngenharia CivilAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessIndústria calçadistaAgregado leve recicladoArgamassaFootwear industryRecycled lightweight aggregateMortarCNPQ::ENGENHARIAS::ENGENHARIA CIVILUso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentíciasUse of lightweight aggregate based on polyester and PVC laminate waste extrused with polystyrene in cementitious matrixinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisVargas, Alexandre Silva dehttp://lattes.cnpq.br/6501148372644975Aquim, Patrice Monteiro deMasuero, Angela BorgesLübeck, Andréhttp://lattes.cnpq.br/7042601812296138Cruz, Bruna Silva da300100000003600600600600600600b7d686f1-5a1c-4d9d-9edc-6ce45f7e355f3de4b546-c604-4bdf-90ab-7db70ff53759e2bcbaf1-ad20-4394-8dac-11dd645cea85ee9ecc0e-a49e-4b10-b9a7-17575f5b373c12f17c44-a0e4-4867-9744-2931d914a013reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMLICENSElicense.txtlicense.txttext/plain; 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dc.title.por.fl_str_mv |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
dc.title.alternative.eng.fl_str_mv |
Use of lightweight aggregate based on polyester and PVC laminate waste extrused with polystyrene in cementitious matrix |
title |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
spellingShingle |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias Cruz, Bruna Silva da Indústria calçadista Agregado leve reciclado Argamassa Footwear industry Recycled lightweight aggregate Mortar CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
title_short |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
title_full |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
title_fullStr |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
title_full_unstemmed |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
title_sort |
Uso de agregados leves à base de resíduos de poliéster e laminado de PVC extrusados com poliestireno em matrizes cimentícias |
author |
Cruz, Bruna Silva da |
author_facet |
Cruz, Bruna Silva da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Vargas, Alexandre Silva de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/6501148372644975 |
dc.contributor.advisor-co1.fl_str_mv |
Aquim, Patrice Monteiro de |
dc.contributor.referee1.fl_str_mv |
Masuero, Angela Borges |
dc.contributor.referee2.fl_str_mv |
Lübeck, André |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/7042601812296138 |
dc.contributor.author.fl_str_mv |
Cruz, Bruna Silva da |
contributor_str_mv |
Vargas, Alexandre Silva de Aquim, Patrice Monteiro de Masuero, Angela Borges Lübeck, André |
dc.subject.por.fl_str_mv |
Indústria calçadista Agregado leve reciclado Argamassa |
topic |
Indústria calçadista Agregado leve reciclado Argamassa Footwear industry Recycled lightweight aggregate Mortar CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
dc.subject.eng.fl_str_mv |
Footwear industry Recycled lightweight aggregate Mortar |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
description |
The generation of waste from different sectors of the Brazilian economy has generated studies and research related to the consumption and disposal of the most varied products. In this context, the industries of the footwear sector, traditional in the State of Rio Grande do Sul, are inserted, which have the need to seek sustainable actions in the reuse of leftover raw materials from the production of footwear. Therefore, this work aimed to evaluate the use of a lightweight aggregate based on polyester waste and PVC laminate extruded with recycled polystyrene in cementitious matrices. Reference mortars were prepared with a mass ratio of 1:3 (cement: dry sand) and a water/cement ratio (w/c) of 0.48. Another four mortars were prepared with levels of replacement of quartz sand, in volume, by light aggregate, at 25%, 50%, 75% and 100%. The results in the fresh state of the mortar show that the workability reduced with the increase in the percentage of light aggregate in the mortar. In the hardened state, increasing the percentage of lightweight aggregate led to an inverse behavior for compressive strength and specific mass, and a direct behavior for water absorption, porosity and void ratio. With the aid of the scanning electron microscope (SEM) it was observed that the thickness of the microcrack between the quartz sand and the hydrated cement paste was smaller when compared to the thickness of the microcrack between the lightweight aggregate and the cement paste after compressive strength tests , which indicates that the lightweight aggregate makes this region less resistant, which corroborates the 86% drop in compressive strength at 28 days between the reference matrix and the matrix containing 100% lightweight aggregate. By energy dispersive spectroscopy (EDS) the chemical elements present on the surface of the samples were verified. Fourier Transform Infrared Spectroscopy (FTIR) identified the characteristic functional groups of materials and cementitious matrices at 7 and 28 days. With the aid of X-ray diffraction (XRD) it was observed that the intensity of the characteristic peaks of quartz reduced as there was an increase in the replacement of quartz sand by light aggregate in the cementitious matrices. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-08-28T19:35:08Z |
dc.date.available.fl_str_mv |
2023-08-28T19:35:08Z |
dc.date.issued.fl_str_mv |
2023-07-21 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
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http://repositorio.ufsm.br/handle/1/30100 |
url |
http://repositorio.ufsm.br/handle/1/30100 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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300100000003 |
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600 600 600 600 600 600 |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess |
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Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/ |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
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Programa de Pós-Graduação em Engenharia Civil |
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UFSM |
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Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Civil |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
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