Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade

Detalhes bibliográficos
Autor(a) principal: Isaia, Gustavo de Aguiar
Data de Publicação: 2021
Tipo de documento: Tese
Idioma: por
Título da fonte: Manancial - Repositório Digital da UFSM
Texto Completo: http://repositorio.ufsm.br/handle/1/22955
Resumo: The cement industry produces about 5% of all CO2 emissions that contribute to greenhouse gases, which represents a significant number compared to the worldwide magnitude of its production, with the respective effects of the use of natural resources and the increase in temperature from the earth. The higher the contents of mineral additions (MA) to Portland cement (PC), the lower the clinker contents, making the PC more sustainable due to the lower consumption of resources and energy. Among inert MA, the most used in cement factories are limestone fillers (LF) ground together with clinker, as they are found almost everywhere in the world. Current research points to the increase in the use of LF to replace PC at levels greater than those provided for in standards, including in ternary mixtures with pozzolans, in order to obtain more resistant, sustainable concretes with a cheaper unit cost, without loss of its durability characteristics. This thesis aims to use high levels of PC substitution (50 to 80%) in binary, ternary and quaternary mixtures of MA (LF and Fly Ash - FA) and addition of Hydrated Lime (HL), with the study of probable useful life, through carbonation and sustainability through Life Cycle Assessment (LCA) and Life Cycle Cost (LCC). It was possible to observe the changes that occurred in the concrete mixes due to the variation in the PC, LF, FA and HL content and its implications on compressive strength, carbonation, formation of carbonated compounds, combined water, Portlandite and carbonate contents, as well as the consequences of these changes in the sustainability parameters (LCA and LCC). In this sense, it was possible to verify the feasibility of preparing concrete through the use of a hyperplasticizer additive that allowed the reduction of the w/b content (0.25), together with the optimization of particle packing, resulting in a workability of 100+20 mm and compressive strengths ranging from 51.8 to 88.6 MPa at 91 days of age. The highlights are the mixtures FC50 and FC60CH10 with compressive strength (at 91 days) and carbonation coefficient (kc) of 87.8/88.6 MPa and 0.22/0.34 mm.t-05, respectively. Another trait worth mentioning is FC70CV10P, with only 20% PC and a consumption of 87 kg.m-3 and 104 L.m-3 of clinker and water, respectively, obtained a compressive strength, at 91 days, of 51, 8 MPa, as well as a carbonation coefficient (kc) of 0.27 mm.t-0.5, leading to a service life 55 times longer than the maximum used in this study (100 years). Regarding the useful life, it was found that, with the exception of the FC70CV10 and FC70CV10CH10 traits, all the others had a useful life greater than 100 years, taking the FC50, FC60 and FC60CH10 traits to the first position in relation to LCA and LCC.
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spelling Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidadeConcrete with high limestone filer content in binary and ternary mixtures with fly ash: resistance to mechanical compression, microstructure and sustainabilityConcretoFiler calcárioAdições mineraisMicroestruturaCarbonataçãoEmissão de CO2ACV e CCVConcreteLimestone filerMineral additionsMicrostructureCarbonationCO2 emissionLCA and LCCCNPQ::ENGENHARIAS::ENGENHARIA CIVILThe cement industry produces about 5% of all CO2 emissions that contribute to greenhouse gases, which represents a significant number compared to the worldwide magnitude of its production, with the respective effects of the use of natural resources and the increase in temperature from the earth. The higher the contents of mineral additions (MA) to Portland cement (PC), the lower the clinker contents, making the PC more sustainable due to the lower consumption of resources and energy. Among inert MA, the most used in cement factories are limestone fillers (LF) ground together with clinker, as they are found almost everywhere in the world. Current research points to the increase in the use of LF to replace PC at levels greater than those provided for in standards, including in ternary mixtures with pozzolans, in order to obtain more resistant, sustainable concretes with a cheaper unit cost, without loss of its durability characteristics. This thesis aims to use high levels of PC substitution (50 to 80%) in binary, ternary and quaternary mixtures of MA (LF and Fly Ash - FA) and addition of Hydrated Lime (HL), with the study of probable useful life, through carbonation and sustainability through Life Cycle Assessment (LCA) and Life Cycle Cost (LCC). It was possible to observe the changes that occurred in the concrete mixes due to the variation in the PC, LF, FA and HL content and its implications on compressive strength, carbonation, formation of carbonated compounds, combined water, Portlandite and carbonate contents, as well as the consequences of these changes in the sustainability parameters (LCA and LCC). In this sense, it was possible to verify the feasibility of preparing concrete through the use of a hyperplasticizer additive that allowed the reduction of the w/b content (0.25), together with the optimization of particle packing, resulting in a workability of 100+20 mm and compressive strengths ranging from 51.8 to 88.6 MPa at 91 days of age. The highlights are the mixtures FC50 and FC60CH10 with compressive strength (at 91 days) and carbonation coefficient (kc) of 87.8/88.6 MPa and 0.22/0.34 mm.t-05, respectively. Another trait worth mentioning is FC70CV10P, with only 20% PC and a consumption of 87 kg.m-3 and 104 L.m-3 of clinker and water, respectively, obtained a compressive strength, at 91 days, of 51, 8 MPa, as well as a carbonation coefficient (kc) of 0.27 mm.t-0.5, leading to a service life 55 times longer than the maximum used in this study (100 years). Regarding the useful life, it was found that, with the exception of the FC70CV10 and FC70CV10CH10 traits, all the others had a useful life greater than 100 years, taking the FC50, FC60 and FC60CH10 traits to the first position in relation to LCA and LCC.A indústria cimenteira produz cerca de 5% de todas as emanações de CO2 que contribuem para os gases do efeito estufa, que representa um número significativo frente à grandeza mundial da sua produção, com os respectivos efeitos do uso de recursos naturais e do aumento da temperatura da terra. Quanto maiores os teores de adições minerais (AM) ao cimento Portland (CP), menores serão os teores de clínquer, tornando o CP mais sustentável pelo menor consumo de recursos e de energia. Entre as AM inertes uma muito empregada nas fábricas de cimento são os Fileres Calcários (FC) moídos juntamente com o clínquer, porque são encontrados em quase todos os lugares do mundo. Pesquisas atuais direcionam para o aumento do uso de FC em substituição ao CP em teores maiores que os previstos em normas, inclusive em misturas ternárias com pozolanas, com o intuito de se obter concretos mais resistentes, sustentáveis e de custo unitário mais barato, sem perda de suas características de durabilidade. Esta tese teve por objetivo a utilização de altos teores de substituição de CP (50 a 80%), em misturas binárias, ternárias e quaternária de AM (FC e Cinza Volante - CV) e adição de Cal Hidratada (CH), com estudo da vida útil provável, através da carbonatação e sustentabilidade por meio da Avaliação do Ciclo de Vida (ACV) e do Custo do Ciclo de Vida (CCV). Foi possível observar as mudanças ocorridas nos traços de concreto por ocasião da variação do teor de CP, FC, CV e CH e suas implicações na resistência à compressão, carbonatação, formação de compostos carbonatados, teores de água combinada, Portlandita e Carbonatos, bem como os reflexos destas mudanças nos parâmetros de sustentabilidade (ACV e CCV). Neste sentido foi possível verificar a viabilidade da elaboração de concretos através do emprego de aditivo hiperplastificante que permitiu a redução do teor a/ag (0,25), juntamente com a otimização do empacotamento de partículas, resultando em uma trabalhabilidade de 100+20 mm e resistências à compressão variando entre 51,8 e 88,6 MPa aos 91 dias de idade. Destacaram-se os traços FC50 e FC60CH10 com resistências à compressão (aos 91 dias) e coeficiente de carbonatação de 87,8/88,6 MPa e 0,22/0,34 mm.t-05, respectivamente. Outro traço que mereceu destaque foi o FC70CV10P, com somente 20% de CP e um consumo de 87 kg.m-3 e 104 L.m-3 de clinquer e água, respectivamente, obteve uma resistência à compressão, aos 91 dias, de 51,8 MPa, bem como um coeficiente de carbonatação (kc) de 0,27 mm.t-0,5, conduzindo a uma vida útil 55 vezes superior à máxima utilizada neste estudo (100 anos). Em relação a vida útil constatou-se que, à exceção dos traços FC70CV10 e FC70CV10CH10, todos os demais apresentaram uma vida útil superior a 100 anos levando os traços FC50, FC60 e FC60CH10 a primeira colocação em relação a ACV e CCV.Universidade Federal de Santa MariaBrasilEngenharia CivilUFSMPrograma de Pós-Graduação em Engenharia CivilCentro de TecnologiaRizzatti, Eduardohttp://lattes.cnpq.br/2907271596071103Lübeck, AndreLima, Rogerio Cattelan Antocheves deKasmierczak, Claudio de SouzaHoppe Filho, JuarezIsaia, Gustavo de Aguiar2021-11-24T15:29:25Z2021-11-24T15:29:25Z2021-08-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisapplication/pdfhttp://repositorio.ufsm.br/handle/1/22955porAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessreponame:Manancial - Repositório Digital da UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSM2022-07-05T14:48:39Zoai:repositorio.ufsm.br:1/22955Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-07-05T14:48:39Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)false
dc.title.none.fl_str_mv Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
Concrete with high limestone filer content in binary and ternary mixtures with fly ash: resistance to mechanical compression, microstructure and sustainability
title Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
spellingShingle Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
Isaia, Gustavo de Aguiar
Concreto
Filer calcário
Adições minerais
Microestrutura
Carbonatação
Emissão de CO2
ACV e CCV
Concrete
Limestone filer
Mineral additions
Microstructure
Carbonation
CO2 emission
LCA and LCC
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
title_short Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
title_full Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
title_fullStr Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
title_full_unstemmed Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
title_sort Concretos com altos teores de filer calcário em misturas binárias e ternárias com cinza volante: resistência à compressão mecânica, microestrutura e sustentabilidade
author Isaia, Gustavo de Aguiar
author_facet Isaia, Gustavo de Aguiar
author_role author
dc.contributor.none.fl_str_mv Rizzatti, Eduardo
http://lattes.cnpq.br/2907271596071103
Lübeck, Andre
Lima, Rogerio Cattelan Antocheves de
Kasmierczak, Claudio de Souza
Hoppe Filho, Juarez
dc.contributor.author.fl_str_mv Isaia, Gustavo de Aguiar
dc.subject.por.fl_str_mv Concreto
Filer calcário
Adições minerais
Microestrutura
Carbonatação
Emissão de CO2
ACV e CCV
Concrete
Limestone filer
Mineral additions
Microstructure
Carbonation
CO2 emission
LCA and LCC
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
topic Concreto
Filer calcário
Adições minerais
Microestrutura
Carbonatação
Emissão de CO2
ACV e CCV
Concrete
Limestone filer
Mineral additions
Microstructure
Carbonation
CO2 emission
LCA and LCC
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL
description The cement industry produces about 5% of all CO2 emissions that contribute to greenhouse gases, which represents a significant number compared to the worldwide magnitude of its production, with the respective effects of the use of natural resources and the increase in temperature from the earth. The higher the contents of mineral additions (MA) to Portland cement (PC), the lower the clinker contents, making the PC more sustainable due to the lower consumption of resources and energy. Among inert MA, the most used in cement factories are limestone fillers (LF) ground together with clinker, as they are found almost everywhere in the world. Current research points to the increase in the use of LF to replace PC at levels greater than those provided for in standards, including in ternary mixtures with pozzolans, in order to obtain more resistant, sustainable concretes with a cheaper unit cost, without loss of its durability characteristics. This thesis aims to use high levels of PC substitution (50 to 80%) in binary, ternary and quaternary mixtures of MA (LF and Fly Ash - FA) and addition of Hydrated Lime (HL), with the study of probable useful life, through carbonation and sustainability through Life Cycle Assessment (LCA) and Life Cycle Cost (LCC). It was possible to observe the changes that occurred in the concrete mixes due to the variation in the PC, LF, FA and HL content and its implications on compressive strength, carbonation, formation of carbonated compounds, combined water, Portlandite and carbonate contents, as well as the consequences of these changes in the sustainability parameters (LCA and LCC). In this sense, it was possible to verify the feasibility of preparing concrete through the use of a hyperplasticizer additive that allowed the reduction of the w/b content (0.25), together with the optimization of particle packing, resulting in a workability of 100+20 mm and compressive strengths ranging from 51.8 to 88.6 MPa at 91 days of age. The highlights are the mixtures FC50 and FC60CH10 with compressive strength (at 91 days) and carbonation coefficient (kc) of 87.8/88.6 MPa and 0.22/0.34 mm.t-05, respectively. Another trait worth mentioning is FC70CV10P, with only 20% PC and a consumption of 87 kg.m-3 and 104 L.m-3 of clinker and water, respectively, obtained a compressive strength, at 91 days, of 51, 8 MPa, as well as a carbonation coefficient (kc) of 0.27 mm.t-0.5, leading to a service life 55 times longer than the maximum used in this study (100 years). Regarding the useful life, it was found that, with the exception of the FC70CV10 and FC70CV10CH10 traits, all the others had a useful life greater than 100 years, taking the FC50, FC60 and FC60CH10 traits to the first position in relation to LCA and LCC.
publishDate 2021
dc.date.none.fl_str_mv 2021-11-24T15:29:25Z
2021-11-24T15:29:25Z
2021-08-19
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/doctoralThesis
format doctoralThesis
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://repositorio.ufsm.br/handle/1/22955
url http://repositorio.ufsm.br/handle/1/22955
dc.language.iso.fl_str_mv por
language por
dc.rights.driver.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Federal de Santa Maria
Brasil
Engenharia Civil
UFSM
Programa de Pós-Graduação em Engenharia Civil
Centro de Tecnologia
publisher.none.fl_str_mv Universidade Federal de Santa Maria
Brasil
Engenharia Civil
UFSM
Programa de Pós-Graduação em Engenharia Civil
Centro de Tecnologia
dc.source.none.fl_str_mv reponame:Manancial - Repositório Digital da UFSM
instname:Universidade Federal de Santa Maria (UFSM)
instacron:UFSM
instname_str Universidade Federal de Santa Maria (UFSM)
instacron_str UFSM
institution UFSM
reponame_str Manancial - Repositório Digital da UFSM
collection Manancial - Repositório Digital da UFSM
repository.name.fl_str_mv Manancial - Repositório Digital da UFSM - Universidade Federal de Santa Maria (UFSM)
repository.mail.fl_str_mv atendimento.sib@ufsm.br||tedebc@gmail.com
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