Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2022 |
Tipo de documento: | Tese |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da PUC_RS |
Texto Completo: | https://tede2.pucrs.br/tede2/handle/tede/10545 |
Resumo: | The research was developed in two stages: In stage 1, the objective was to evaluate the effect of mixed recycled aggregate (MRA) as coarse aggregate on the mechanical properties (compressive strength and elastic modulus), physical (water absorption, porosity, and bulk density), in the diffusion of CO2 and microstructural (SEM and X-ray microtomography) in concretes with MRA in the substitution levels of 25, 50, 75 and 100% in partial substitution to the natural aggregate and reference concrete. The w/c ratios were 0.40, 0.50 and 0.60. Mathematical models were generated to calculate the elastic modulus from an fc28 and desired w/c ratio and the required MRA content. Stage 2, the objective was to evaluate the efficiency of adding hydrated dolomitic lime in Portland cement concrete, fly ash (CV), and recycled aggregate (RA) as coarse aggregate, as a way of improving the mechanical properties at the lowest ages, as well as reducing the depth of carbonation. For this, concretes were produced with 20% of CV in partial replacement of the CP, the addition of hydrated lime in the proportions of 5, and 10% of the total binder in mass and w/b ratio of 0.55. The MRA and recycled concrete aggregate (RCA) was 50% replaced by natural coarse aggregate. For this, mechanical (compressive strength, elastic modulus), physical (water absorption, porosity and bulk density), CO2 diffusion and microstructural analysis (SEM and X-ray microtomography) tests were performed. The results of Stage 1 showed that concretes with MRA content of 50% and w/c ratio of 0.50 presented a decrease in fc28 and Ec28 of 18% and 54.9%, respectively, when compared to the reference concrete. The increase in the volume of voids was 33% when compared to the reference concrete. The results of Stage 2 showed that the addition of 10% hydrated lime in concretes with 80% CP, 20% CV, and 50% ARC presented compressive strength at 63 days 12.47% higher when compared to concrete without lime hydrated. Ec28 improved by 3.78% compared to concrete without hydrated lime. The average ITZ thickness of the concretes without and with 10% hydrated lime was 3.61 ?m and 6.28 ?m, respectively. The addition of hydrated lime in Portland cement concretes with CV and RA restores the remaining Ca(OH)2 content in the matrix, anticipating pozzolanic reactions at early ages |
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Andrade, Jairo Jos? de Oliveirahttp://lattes.cnpq.br/2835610496598824http://lattes.cnpq.br/2173787905045358Silva, S?rgio Roberto da2022-11-10T21:41:16Z2022-08-25https://tede2.pucrs.br/tede2/handle/tede/10545The research was developed in two stages: In stage 1, the objective was to evaluate the effect of mixed recycled aggregate (MRA) as coarse aggregate on the mechanical properties (compressive strength and elastic modulus), physical (water absorption, porosity, and bulk density), in the diffusion of CO2 and microstructural (SEM and X-ray microtomography) in concretes with MRA in the substitution levels of 25, 50, 75 and 100% in partial substitution to the natural aggregate and reference concrete. The w/c ratios were 0.40, 0.50 and 0.60. Mathematical models were generated to calculate the elastic modulus from an fc28 and desired w/c ratio and the required MRA content. Stage 2, the objective was to evaluate the efficiency of adding hydrated dolomitic lime in Portland cement concrete, fly ash (CV), and recycled aggregate (RA) as coarse aggregate, as a way of improving the mechanical properties at the lowest ages, as well as reducing the depth of carbonation. For this, concretes were produced with 20% of CV in partial replacement of the CP, the addition of hydrated lime in the proportions of 5, and 10% of the total binder in mass and w/b ratio of 0.55. The MRA and recycled concrete aggregate (RCA) was 50% replaced by natural coarse aggregate. For this, mechanical (compressive strength, elastic modulus), physical (water absorption, porosity and bulk density), CO2 diffusion and microstructural analysis (SEM and X-ray microtomography) tests were performed. The results of Stage 1 showed that concretes with MRA content of 50% and w/c ratio of 0.50 presented a decrease in fc28 and Ec28 of 18% and 54.9%, respectively, when compared to the reference concrete. The increase in the volume of voids was 33% when compared to the reference concrete. The results of Stage 2 showed that the addition of 10% hydrated lime in concretes with 80% CP, 20% CV, and 50% ARC presented compressive strength at 63 days 12.47% higher when compared to concrete without lime hydrated. Ec28 improved by 3.78% compared to concrete without hydrated lime. The average ITZ thickness of the concretes without and with 10% hydrated lime was 3.61 ?m and 6.28 ?m, respectively. The addition of hydrated lime in Portland cement concretes with CV and RA restores the remaining Ca(OH)2 content in the matrix, anticipating pozzolanic reactions at early agesA pesquisa foi desenvolvida em duas etapas: Etapa 1, o objetivo foi avaliar o efeito do agregado reciclado misto (ARM) como agregado gra?do nas propriedades mec?nicas (resist?ncia ? compress?o e m?dulo de elasticidade), f?sicas (absor??o d??gua, porosidade e massa espec?fica), na difus?o de CO2 e microestruturais (MEV e microtomografia de raios X) em concretos com ARM nos teores de substitui??o de 25, 50 75 e 100% em substitui??o parcial ao agregado natural e concreto de refer?ncia. As rela??es a/c foram 0,40, 0,50 e 0,60. Foram gerados modelos matem?ticos para calcular o m?dulo de elasticidade a partir de uma fc28 e rela??o a/c desejada e o teor de ARM necess?rio. Etapa 2, o objetivo foi avaliar a efici?ncia da adi??o de cal hidratada dolom?tica em concretos de cimento Portland, cinza volante (CV) e agregado reciclado (AR) como agregado gra?do, como forma de melhorar as propriedades mec?nicas nas menores idades, bem como diminuir a profundidade de carbonata??o. Para tal, foram produzidos concretos com 20% de CV em substitui??o parcial ao CP, adi??o de cal hidratada nas propor??es de 5 e 10% do total de aglomerante em massa e rela??o ?gua/aglomerante de 0,55. O ARM e agregado reciclado de concreto (ARC) foi na propor??o de 50% de substitui??o por agregado gra?do natural. Para isso, foram realizados ensaios mec?nicos (resist?ncia ? compress?o axial, m?dulo de elasticidade), f?sicos (absor??o d??gua, porosidade e massa espec?fica), na difus?o de CO2 e an?lise microestruturais (MEV e microtomografia de raios X). Os resultados da Etapa 1 mostraram que concretos com teor de ARM de 50% e rela??o a/c 0,50 apresentou queda na fc28 e Ec28 de 18% e 54,9% respectivamente quando comparado ao concreto de refer?ncia. O aumento no volume de vazios foi de 33% quando comparado ao concreto de refer?ncia. Os resultados da Etapa 2 mostraram que a adi??o de 10% de cal hidratada em concretos com 80% de CP, 20% de CV e 50% de ARC apresentou resist?ncia ? compress?o aos 63 dias 12,47% maior quando comparado ao concreto sem cal hidratada. O Ec28 melhorou 3,78% em compara??o ao concreto sem cal hidratada. A espessura m?dia da ITZ dos concretos com e sem 10% de cal hidratada foi de 3,61 ?m e 6,28 ?m respectivamente. A adi??o da cal hidratada em concretos de cimento Portland com CV e RA restabelece o teor remanescente de Ca(OH)2 na matriz antecipando as rea??es pozol?nicas em idades precocesSubmitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2022-11-03T18:41:42Z No. of bitstreams: 1 Tese Sergio Roberto da Silva.pdf: 11761973 bytes, checksum: 8a1847a29a338715b9b3ae8a2664d53f (MD5)Rejected by Sarajane Pan (sarajane.pan@pucrs.br), reason: Devolvido, devido a data de confidencialidade estar diferente do prazo indicado. on 2022-11-08T21:02:44Z (GMT)Submitted by PPG Engenharia e Tecnologia de Materiais (engenharia.pg.materiais@pucrs.br) on 2022-11-09T14:09:08Z No. of bitstreams: 1 Tese Sergio Roberto da Silva.pdf: 11761973 bytes, checksum: 8a1847a29a338715b9b3ae8a2664d53f (MD5)Approved for entry into archive by Sarajane Pan (sarajane.pan@pucrs.br) on 2022-11-10T19:31:33Z (GMT) No. of bitstreams: 1 Tese Sergio Roberto da Silva.pdf: 11761973 bytes, checksum: 8a1847a29a338715b9b3ae8a2664d53f (MD5)Made available in DSpace on 2022-11-10T21:41:16Z (GMT). No. of bitstreams: 1 Tese Sergio Roberto da Silva.pdf: 11761973 bytes, checksum: 8a1847a29a338715b9b3ae8a2664d53f (MD5) Previous issue date: 2022-08-25Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPESapplication/pdfhttps://tede2.pucrs.br/tede2/retrieve/185921/TES_S%c3%89RGIO_ROBERTO_DA%20SILVA_CONFIDENCIAL.pdf.jpghttps://tede2.pucrs.br/tede2/retrieve/189342/TES_S%c3%89RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.jpgporPontif?cia Universidade Cat?lica do Rio Grande do SulPrograma de P?s-Gradua??o em Engenharia e Tecnologia de MateriaisPUCRSBrasilEscola Polit?cnicaConcretoFAARMARCCal HidratadaconcreteFAMRARCAHydrated LimeENGENHARIASUso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisTrabalho ser? publicado como artigo ou livro12 meses10/11/2023495391460509391966550050060045189710564848268253590462550136975366info:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da PUC_RSinstname:Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)instacron:PUC_RSORIGINALTES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdfTES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdfapplication/pdf11761973https://tede2.pucrs.br/tede2/bitstream/tede/10545/7/TES_S%C3%89RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf8a1847a29a338715b9b3ae8a2664d53fMD57THUMBNAILTES_S?RGIO_ROBERTO_DA SILVA_CONFIDENCIAL.pdf.jpgTES_S?RGIO_ROBERTO_DA SILVA_CONFIDENCIAL.pdf.jpgimage/jpeg4088https://tede2.pucrs.br/tede2/bitstream/tede/10545/6/TES_S%C3%89RGIO_ROBERTO_DA+SILVA_CONFIDENCIAL.pdf.jpg9879457e85e497a77f6215ea5e32284aMD56TES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.jpgTES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.jpgimage/jpeg6200https://tede2.pucrs.br/tede2/bitstream/tede/10545/9/TES_S%C3%89RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.jpgeaa4254ebe24b3fefe944bb77898b241MD59TEXTTES_S?RGIO_ROBERTO_DA SILVA_CONFIDENCIAL.pdf.txtTES_S?RGIO_ROBERTO_DA SILVA_CONFIDENCIAL.pdf.txttext/plain1263https://tede2.pucrs.br/tede2/bitstream/tede/10545/5/TES_S%C3%89RGIO_ROBERTO_DA+SILVA_CONFIDENCIAL.pdf.txt7ced42878aaa67abb73ba3431f860acdMD55TES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.txtTES_S?RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.txttext/plain106004https://tede2.pucrs.br/tede2/bitstream/tede/10545/8/TES_S%C3%89RGIO_ROBERTO_DA_SILVA_COMPLETO.pdf.txt4f78d22e2a213f054b5b43bcce57cf38MD58LICENSElicense.txtlicense.txttext/plain; charset=utf-8590https://tede2.pucrs.br/tede2/bitstream/tede/10545/3/license.txt220e11f2d3ba5354f917c7035aadef24MD53tede/105452023-11-13 12:00:15.152oai:tede2.pucrs.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede2.pucrs.br/tede2/PRIhttps://tede2.pucrs.br/oai/requestbiblioteca.central@pucrs.br||opendoar:2023-11-13T14:00:15Biblioteca Digital de Teses e Dissertações da PUC_RS - Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS)false |
dc.title.por.fl_str_mv |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
title |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
spellingShingle |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil Silva, S?rgio Roberto da Concreto FA ARM ARC Cal Hidratada concrete FA MRA RCA Hydrated Lime ENGENHARIAS |
title_short |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
title_full |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
title_fullStr |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
title_full_unstemmed |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
title_sort |
Uso de res?duo de constru??o e demoli??o (RCD), cinza volante e cal hidratada para produ??o de concretos aplicados na constru??o civil |
author |
Silva, S?rgio Roberto da |
author_facet |
Silva, S?rgio Roberto da |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Andrade, Jairo Jos? de Oliveira |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/2835610496598824 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2173787905045358 |
dc.contributor.author.fl_str_mv |
Silva, S?rgio Roberto da |
contributor_str_mv |
Andrade, Jairo Jos? de Oliveira |
dc.subject.por.fl_str_mv |
Concreto FA ARM ARC Cal Hidratada |
topic |
Concreto FA ARM ARC Cal Hidratada concrete FA MRA RCA Hydrated Lime ENGENHARIAS |
dc.subject.eng.fl_str_mv |
concrete FA MRA RCA Hydrated Lime |
dc.subject.cnpq.fl_str_mv |
ENGENHARIAS |
description |
The research was developed in two stages: In stage 1, the objective was to evaluate the effect of mixed recycled aggregate (MRA) as coarse aggregate on the mechanical properties (compressive strength and elastic modulus), physical (water absorption, porosity, and bulk density), in the diffusion of CO2 and microstructural (SEM and X-ray microtomography) in concretes with MRA in the substitution levels of 25, 50, 75 and 100% in partial substitution to the natural aggregate and reference concrete. The w/c ratios were 0.40, 0.50 and 0.60. Mathematical models were generated to calculate the elastic modulus from an fc28 and desired w/c ratio and the required MRA content. Stage 2, the objective was to evaluate the efficiency of adding hydrated dolomitic lime in Portland cement concrete, fly ash (CV), and recycled aggregate (RA) as coarse aggregate, as a way of improving the mechanical properties at the lowest ages, as well as reducing the depth of carbonation. For this, concretes were produced with 20% of CV in partial replacement of the CP, the addition of hydrated lime in the proportions of 5, and 10% of the total binder in mass and w/b ratio of 0.55. The MRA and recycled concrete aggregate (RCA) was 50% replaced by natural coarse aggregate. For this, mechanical (compressive strength, elastic modulus), physical (water absorption, porosity and bulk density), CO2 diffusion and microstructural analysis (SEM and X-ray microtomography) tests were performed. The results of Stage 1 showed that concretes with MRA content of 50% and w/c ratio of 0.50 presented a decrease in fc28 and Ec28 of 18% and 54.9%, respectively, when compared to the reference concrete. The increase in the volume of voids was 33% when compared to the reference concrete. The results of Stage 2 showed that the addition of 10% hydrated lime in concretes with 80% CP, 20% CV, and 50% ARC presented compressive strength at 63 days 12.47% higher when compared to concrete without lime hydrated. Ec28 improved by 3.78% compared to concrete without hydrated lime. The average ITZ thickness of the concretes without and with 10% hydrated lime was 3.61 ?m and 6.28 ?m, respectively. The addition of hydrated lime in Portland cement concretes with CV and RA restores the remaining Ca(OH)2 content in the matrix, anticipating pozzolanic reactions at early ages |
publishDate |
2022 |
dc.date.accessioned.fl_str_mv |
2022-11-10T21:41:16Z |
dc.date.issued.fl_str_mv |
2022-08-25 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
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doctoralThesis |
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publishedVersion |
dc.identifier.uri.fl_str_mv |
https://tede2.pucrs.br/tede2/handle/tede/10545 |
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https://tede2.pucrs.br/tede2/handle/tede/10545 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
4953914605093919665 |
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500 500 600 |
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4518971056484826825 |
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3590462550136975366 |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
dc.publisher.program.fl_str_mv |
Programa de P?s-Gradua??o em Engenharia e Tecnologia de Materiais |
dc.publisher.initials.fl_str_mv |
PUCRS |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Escola Polit?cnica |
publisher.none.fl_str_mv |
Pontif?cia Universidade Cat?lica do Rio Grande do Sul |
dc.source.none.fl_str_mv |
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PUC_RS |
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PUC_RS |
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Biblioteca Digital de Teses e Dissertações da PUC_RS |
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