Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | |
Tipo de documento: | Trabalho de conclusão de curso |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFS |
Texto Completo: | https://ri.ufs.br/jspui/handle/riufs/19070 |
Resumo: | The production of concrete generates a high environmental impact due to its high demand for raw materials, exacerbated by the production of Portland cement, which leads to high CO2 emissions. Self-compacting concrete (SCC) requires high fines content in its formulation, resulting in a higher cement consumption to achieve flowability and cohesion. Therefore, reducing cement consumption in SCC production is necessary for sustainability in the construction industry. This research aimed to analyze the technical feasibility of SCC with lower cement consumption compared to locally used dosages, optimizing the use of cement and additives while aiming to improve performance, including strength, without increasing costs. Two compositions of self-compacting concrete were prepared, one with the incorporation of polypropylene fibers and another without fibers, used as a reference. It was possible to achieve a cement consumption of 380 Kg/m³ in both mixtures. Initially, the compatibility between cement and superplasticizer admixture was analyzed to find the saturation point for material economy. Afterward, tests were conducted to characterize the fresh-state concrete, including the slump (Flow Test), flow time (t500), and resistance to segregation. Properties in the hardened state, such as apparent density, compressive strength, modulus of elasticity, and split tensile strength, were also evaluated. With this, it was observed that even with a smaller amount of cement in the mixture composition, representing a reduction of 4.3%, the compressive strength increased by 17.6%, and the properties in the fresh and hardened states were satisfactory, contributing to a more sustainable and eco-efficient SCC. |
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Dantas, Lucas MendonçaAndrade, Matheus Tavares deCardoso, Sandra Carla Lima2024-02-15T13:12:00Z2024-02-15T13:12:00Z2023-09-25Dantas, Lucas Mendonça ; Andrade, Matheus Tavares de. Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos. São Cristóvão, 2023. Monografia (graduação em Engenharia Civil) – Departamento de Engenharia Civil, Centro de Ciências Exatas e Tecnologia, Universidade Federal de Sergipe, São Cristóvão, SE, 2023https://ri.ufs.br/jspui/handle/riufs/19070The production of concrete generates a high environmental impact due to its high demand for raw materials, exacerbated by the production of Portland cement, which leads to high CO2 emissions. Self-compacting concrete (SCC) requires high fines content in its formulation, resulting in a higher cement consumption to achieve flowability and cohesion. Therefore, reducing cement consumption in SCC production is necessary for sustainability in the construction industry. This research aimed to analyze the technical feasibility of SCC with lower cement consumption compared to locally used dosages, optimizing the use of cement and additives while aiming to improve performance, including strength, without increasing costs. Two compositions of self-compacting concrete were prepared, one with the incorporation of polypropylene fibers and another without fibers, used as a reference. It was possible to achieve a cement consumption of 380 Kg/m³ in both mixtures. Initially, the compatibility between cement and superplasticizer admixture was analyzed to find the saturation point for material economy. Afterward, tests were conducted to characterize the fresh-state concrete, including the slump (Flow Test), flow time (t500), and resistance to segregation. Properties in the hardened state, such as apparent density, compressive strength, modulus of elasticity, and split tensile strength, were also evaluated. With this, it was observed that even with a smaller amount of cement in the mixture composition, representing a reduction of 4.3%, the compressive strength increased by 17.6%, and the properties in the fresh and hardened states were satisfactory, contributing to a more sustainable and eco-efficient SCC.A produção de concreto gera elevado impacto ambiental por ser um material que demanda alto consumo de matéria-prima, fato agravado pela produção do cimento Portland, devido às altas taxas de emissão de CO2. Concretos autoadensáveis (CAA) necessitam de altos teores de finos em sua formulação, gerando maior consumo de cimento para que possuam fluidez e coesão. Logo, a diminuição do consumo de cimento na produção do concreto autoadensável é necessária para a sustentabilidade na construção civil. A partir disso, esta pesquisa analisou a viabilidade técnica do CAA com menor consumo de cimento comparado a dosagens utilizadas localmente, otimizando o uso do cimento e dos aditivos, visando melhorar a performance também com relação à resistência, mas sem onerar custos. Para isso, foram feitas duas composições de concreto autoadensável, uma com incorporação de fibras de polipropileno e outra sem fibras, sendo usada como referência. Foi possível chegar ao consumo de cimento de 380 Kg/m³ em ambos os traços. Inicialmente foi analisada a compatibilidade entre o cimento e o aditivo superplastificante, a fim de encontrar o ponto de saturação para efeitos de economia desse material. Após isso, foram realizados ensaios de caracterização do concreto em estado fresco, sendo eles o espalhamento (Flow Test), tempo de escoamento (t500) e resistência à segregação. Foram avaliadas também as propriedades em estado endurecido, como a massa específica aparente, a resistência à compressão, módulo de elasticidade e resistência à tração por compressão diametral. Com isso, constatou-se que mesmo com menor quantidade de cimento na composição da mistura, representando redução de 4,3%, a resistência à compressão foi aumentada em 17,6% e as propriedades em estado fresco e endurecidos foram satisfatórias, contribuindo para que o CAA seja mais sustentável e ecoeficiente.São Cristóvão, SEporEngenharia civilEnsino superior (UFS)Sustentabilidade (Construção civil)Ecoeficiência (Construção civil)Concreto autoadensávelCimentoConstrução civilSustainabilityEco-efficiencySelf-compacting concreteCement consumptionENGENHARIAS::ENGENHARIA CIVIL::CONSTRUCAO CIVILSustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivosSustainability and eco-efficiency in self-compacting concrete mix design : a study to reduce the consumption of cement and additivesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/bachelorThesisUniversidade Federal de Sergipe (UFS)DEC - Departamento de Engenharia Civil – São Cristóvão - Presencialreponame:Repositório Institucional da UFSinstname:Universidade Federal de Sergipe (UFS)instacron:UFSinfo:eu-repo/semantics/openAccessLICENSElicense.txtlicense.txttext/plain; charset=utf-81475https://ri.ufs.br/jspui/bitstream/riufs/19070/1/license.txt098cbbf65c2c15e1fb2e49c5d306a44cMD51ORIGINALLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdfLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdfapplication/pdf938186https://ri.ufs.br/jspui/bitstream/riufs/19070/2/Lucas_Mendonca_Dantas_%26_Matheus_Tavares_Andrade.pdf9201c5cff1c68d8dfce854d58547d80fMD52TEXTLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdf.txtLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdf.txtExtracted texttext/plain67805https://ri.ufs.br/jspui/bitstream/riufs/19070/3/Lucas_Mendonca_Dantas_%26_Matheus_Tavares_Andrade.pdf.txt1cb7619c742855918f6987536a4503f2MD53THUMBNAILLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdf.jpgLucas_Mendonca_Dantas_&_Matheus_Tavares_Andrade.pdf.jpgGenerated Thumbnailimage/jpeg1225https://ri.ufs.br/jspui/bitstream/riufs/19070/4/Lucas_Mendonca_Dantas_%26_Matheus_Tavares_Andrade.pdf.jpgaec92f72efb00326426613cc4af29911MD54riufs/190702024-02-15 10:12:05.651oai:ufs.br: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Repositório InstitucionalPUBhttps://ri.ufs.br/oai/requestrepositorio@academico.ufs.bropendoar:2024-02-15T13:12:05Repositório Institucional da UFS - Universidade Federal de Sergipe (UFS)false |
dc.title.pt_BR.fl_str_mv |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
dc.title.alternative.eng.fl_str_mv |
Sustainability and eco-efficiency in self-compacting concrete mix design : a study to reduce the consumption of cement and additives |
title |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
spellingShingle |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos Dantas, Lucas Mendonça Engenharia civil Ensino superior (UFS) Sustentabilidade (Construção civil) Ecoeficiência (Construção civil) Concreto autoadensável Cimento Construção civil Sustainability Eco-efficiency Self-compacting concrete Cement consumption ENGENHARIAS::ENGENHARIA CIVIL::CONSTRUCAO CIVIL |
title_short |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
title_full |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
title_fullStr |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
title_full_unstemmed |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
title_sort |
Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos |
author |
Dantas, Lucas Mendonça |
author_facet |
Dantas, Lucas Mendonça Andrade, Matheus Tavares de |
author_role |
author |
author2 |
Andrade, Matheus Tavares de |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Dantas, Lucas Mendonça Andrade, Matheus Tavares de |
dc.contributor.advisor1.fl_str_mv |
Cardoso, Sandra Carla Lima |
contributor_str_mv |
Cardoso, Sandra Carla Lima |
dc.subject.por.fl_str_mv |
Engenharia civil Ensino superior (UFS) Sustentabilidade (Construção civil) Ecoeficiência (Construção civil) Concreto autoadensável Cimento Construção civil |
topic |
Engenharia civil Ensino superior (UFS) Sustentabilidade (Construção civil) Ecoeficiência (Construção civil) Concreto autoadensável Cimento Construção civil Sustainability Eco-efficiency Self-compacting concrete Cement consumption ENGENHARIAS::ENGENHARIA CIVIL::CONSTRUCAO CIVIL |
dc.subject.eng.fl_str_mv |
Sustainability Eco-efficiency Self-compacting concrete Cement consumption |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS::ENGENHARIA CIVIL::CONSTRUCAO CIVIL |
description |
The production of concrete generates a high environmental impact due to its high demand for raw materials, exacerbated by the production of Portland cement, which leads to high CO2 emissions. Self-compacting concrete (SCC) requires high fines content in its formulation, resulting in a higher cement consumption to achieve flowability and cohesion. Therefore, reducing cement consumption in SCC production is necessary for sustainability in the construction industry. This research aimed to analyze the technical feasibility of SCC with lower cement consumption compared to locally used dosages, optimizing the use of cement and additives while aiming to improve performance, including strength, without increasing costs. Two compositions of self-compacting concrete were prepared, one with the incorporation of polypropylene fibers and another without fibers, used as a reference. It was possible to achieve a cement consumption of 380 Kg/m³ in both mixtures. Initially, the compatibility between cement and superplasticizer admixture was analyzed to find the saturation point for material economy. Afterward, tests were conducted to characterize the fresh-state concrete, including the slump (Flow Test), flow time (t500), and resistance to segregation. Properties in the hardened state, such as apparent density, compressive strength, modulus of elasticity, and split tensile strength, were also evaluated. With this, it was observed that even with a smaller amount of cement in the mixture composition, representing a reduction of 4.3%, the compressive strength increased by 17.6%, and the properties in the fresh and hardened states were satisfactory, contributing to a more sustainable and eco-efficient SCC. |
publishDate |
2023 |
dc.date.issued.fl_str_mv |
2023-09-25 |
dc.date.accessioned.fl_str_mv |
2024-02-15T13:12:00Z |
dc.date.available.fl_str_mv |
2024-02-15T13:12:00Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/bachelorThesis |
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bachelorThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Dantas, Lucas Mendonça ; Andrade, Matheus Tavares de. Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos. São Cristóvão, 2023. Monografia (graduação em Engenharia Civil) – Departamento de Engenharia Civil, Centro de Ciências Exatas e Tecnologia, Universidade Federal de Sergipe, São Cristóvão, SE, 2023 |
dc.identifier.uri.fl_str_mv |
https://ri.ufs.br/jspui/handle/riufs/19070 |
identifier_str_mv |
Dantas, Lucas Mendonça ; Andrade, Matheus Tavares de. Sustentabilidade e ecoeficiência na dosagem de concreto autoadensável : estudo para a redução do consumo de cimento e aditivos. São Cristóvão, 2023. Monografia (graduação em Engenharia Civil) – Departamento de Engenharia Civil, Centro de Ciências Exatas e Tecnologia, Universidade Federal de Sergipe, São Cristóvão, SE, 2023 |
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https://ri.ufs.br/jspui/handle/riufs/19070 |
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Universidade Federal de Sergipe (UFS) |
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DEC - Departamento de Engenharia Civil – São Cristóvão - Presencial |
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