Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas
Ano de defesa: | 2019 |
---|---|
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/1/19746 |
Resumo: | The use of concrete admixtures coming from industrial waste or by-products from other activities has already been a reality with several positive impacts in a world where it is necessary to predominate the conscious consumption of resources and its sustainability. In this study, it was evaluated the effects of the partial replacement of cement to the water treatment plant sludge ash (CLETA) regarding the behavior of concrete under high temperatures, isolated or with the presence of ground limestone. The specimens were exposed to temperatures of 200 °C, 400 °C, 600 °C and 900 ° C and then compared with a reference at ambient temperature. Axial compressive strength test and dynamic modulus of elasticity test, indirectly measured using the ultrasonic pulse velocity test (UPV), were performed. Water/binder (w/b) ratios of 0.35 and 0.50 were adopted and cement was replaced with 15% of CLETA, 15% of CLETA + 7.5% of ground limestone and 24% CLETA + 12% of ground limestone. From the obtained results it was verified a behavioral pattern similar to that of other concretes with cement replacements, and that the replacement of cement by 15 % of CLETA and 7,5% of ground limestone is beneficial considering the technical and environmental aspect for w/b ratios of 0.50 (used for usual concretes). For lower w/b ratios, or for increased substitution rate, a more detailed study should be performed because the risk of spalling occurrence increases noticeably. Likewise, the use of the UPV test to assess the material integrity conditions is valid and feasible, but the viability of using the dynamic modulus in this situation was not conclusive. |
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2020-03-05T21:05:28Z2020-03-05T21:05:28Z2019-07-18http://repositorio.ufsm.br/handle/1/19746The use of concrete admixtures coming from industrial waste or by-products from other activities has already been a reality with several positive impacts in a world where it is necessary to predominate the conscious consumption of resources and its sustainability. In this study, it was evaluated the effects of the partial replacement of cement to the water treatment plant sludge ash (CLETA) regarding the behavior of concrete under high temperatures, isolated or with the presence of ground limestone. The specimens were exposed to temperatures of 200 °C, 400 °C, 600 °C and 900 ° C and then compared with a reference at ambient temperature. Axial compressive strength test and dynamic modulus of elasticity test, indirectly measured using the ultrasonic pulse velocity test (UPV), were performed. Water/binder (w/b) ratios of 0.35 and 0.50 were adopted and cement was replaced with 15% of CLETA, 15% of CLETA + 7.5% of ground limestone and 24% CLETA + 12% of ground limestone. From the obtained results it was verified a behavioral pattern similar to that of other concretes with cement replacements, and that the replacement of cement by 15 % of CLETA and 7,5% of ground limestone is beneficial considering the technical and environmental aspect for w/b ratios of 0.50 (used for usual concretes). For lower w/b ratios, or for increased substitution rate, a more detailed study should be performed because the risk of spalling occurrence increases noticeably. Likewise, the use of the UPV test to assess the material integrity conditions is valid and feasible, but the viability of using the dynamic modulus in this situation was not conclusive.O uso de adições no concreto provenientes de resíduos ou subprodutos de outras atividades já é uma realidade com diversos impactos positivos em um mundo que precisa primar pelo consumo consciente de seus recursos e sua sustentabilidade. Nesta pesquisa, foram avaliados os impactos da substituição parcial do cimento pela cinza do lodo oriundo do tratamento de água (CLETA) quanto ao comportamento do concreto frente a altas temperaturas, isolada ou com a presença de fíler calcário. Os corpos de prova foram expostos a temperaturas de 200 °C, 400 °C, 600 °C e 900 °C, e posteriormente comparados com exemplares de referência à temperatura ambiente. Foram realizados ensaios de resistência à compressão axial e módulo de elasticidade dinâmico, medido de forma indireta com o uso do ensaio de velocidade de propagação do pulso ultrassônico (VPU). Foram adotadas relações água/aglomerante 0,35 e 0,50 e teores de substituição do cimento por CLETA e calcário moído de 0%, 15% CLETA, 15% de CLETA + 7,5% de calcário e 24% de CLETA+12% de calcário. Dos resultados obtidos verificou-se um padrão de comportamento semelhante ao de outros concretos com substituições, e que a substituição do cimento pela CLETA e calcário é vantajosa sob o aspecto técnico e ambiental para relações água/aglomerante de 0,50 (utilizadas para concretos usuais), e teores de substituição de 15% e 7,5%. Para relações a/agl mais baixas, ou para o aumento do teor de substituição, deve-se efetuar um estudo mais detalhado pois o risco da ocorrência de spalling é muito grande. Da mesma forma, a utilização do ensaio de VPU para aferição das condições de integridade do material se mostra válida e viável, porém, não foi conclusiva a viabilidade do uso do módulo de elasticidade dinâmico nesta situação.porUniversidade 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/openAccessAltas temperaturasConcretoCinza de lodo de estação de tratamento de águaCalcário moídoIncêndioMódulo de elasticidade dinâmicoHigh temperaturesWater treatment plant sludge ashGround limestoneFire exposureCNPQ::ENGENHARIAS::ENGENHARIA CIVILConsiderações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturasConsiderations on the concrete composed by water treatment plant sludge ash exposed to high temperaturesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisGastaldini, Antonio Luiz Guerrahttp://lattes.cnpq.br/9293085240832049Lima, Rogerio Cattelan Antocheves dehttp://lattes.cnpq.br/5518587537986438Lübeck, Andréhttp://lattes.cnpq.br/7511022637484145Lorenzi, Alexandrehttp://lattes.cnpq.br/7056435031002828http://lattes.cnpq.br/3844946797464618Neumann, João Henrique3001000000036006a6bd4d6-e9f2-46f6-9245-5aefb19c7a28ce6792d7-ce86-4b85-8e6d-8a171244b57fa1ceceaa-77c8-48ce-8450-fede4f33cf32a7e747be-7cb9-446d-b20d-f861a407e2693afb486e-5a6b-48b3-8649-1d837cdcb8f4reponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALDIS_PPGEC_2019_NEUMANN_JOAO.pdfDIS_PPGEC_2019_NEUMANN_JOAO.pdfDissertação de Mestradoapplication/pdf1961979http://repositorio.ufsm.br/bitstream/1/19746/1/DIS_PPGEC_2019_NEUMANN_JOAO.pdf503b3ec3b3b8115812b48cf612a2775fMD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; 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dc.title.por.fl_str_mv |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
dc.title.alternative.eng.fl_str_mv |
Considerations on the concrete composed by water treatment plant sludge ash exposed to high temperatures |
title |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
spellingShingle |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas Neumann, João Henrique Altas temperaturas Concreto Cinza de lodo de estação de tratamento de água Calcário moído Incêndio Módulo de elasticidade dinâmico High temperatures Water treatment plant sludge ash Ground limestone Fire exposure CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
title_short |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
title_full |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
title_fullStr |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
title_full_unstemmed |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
title_sort |
Considerações sobre o concreto composto com cinza de lodo de ETA exposto a altas temperaturas |
author |
Neumann, João Henrique |
author_facet |
Neumann, João Henrique |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Gastaldini, Antonio Luiz Guerra |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/9293085240832049 |
dc.contributor.advisor-co1.fl_str_mv |
Lima, Rogerio Cattelan Antocheves de |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/5518587537986438 |
dc.contributor.referee1.fl_str_mv |
Lübeck, André |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/7511022637484145 |
dc.contributor.referee2.fl_str_mv |
Lorenzi, Alexandre |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/7056435031002828 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/3844946797464618 |
dc.contributor.author.fl_str_mv |
Neumann, João Henrique |
contributor_str_mv |
Gastaldini, Antonio Luiz Guerra Lima, Rogerio Cattelan Antocheves de Lübeck, André Lorenzi, Alexandre |
dc.subject.por.fl_str_mv |
Altas temperaturas Concreto Cinza de lodo de estação de tratamento de água Calcário moído Incêndio Módulo de elasticidade dinâmico |
topic |
Altas temperaturas Concreto Cinza de lodo de estação de tratamento de água Calcário moído Incêndio Módulo de elasticidade dinâmico High temperatures Water treatment plant sludge ash Ground limestone Fire exposure CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
dc.subject.eng.fl_str_mv |
High temperatures Water treatment plant sludge ash Ground limestone Fire exposure |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
description |
The use of concrete admixtures coming from industrial waste or by-products from other activities has already been a reality with several positive impacts in a world where it is necessary to predominate the conscious consumption of resources and its sustainability. In this study, it was evaluated the effects of the partial replacement of cement to the water treatment plant sludge ash (CLETA) regarding the behavior of concrete under high temperatures, isolated or with the presence of ground limestone. The specimens were exposed to temperatures of 200 °C, 400 °C, 600 °C and 900 ° C and then compared with a reference at ambient temperature. Axial compressive strength test and dynamic modulus of elasticity test, indirectly measured using the ultrasonic pulse velocity test (UPV), were performed. Water/binder (w/b) ratios of 0.35 and 0.50 were adopted and cement was replaced with 15% of CLETA, 15% of CLETA + 7.5% of ground limestone and 24% CLETA + 12% of ground limestone. From the obtained results it was verified a behavioral pattern similar to that of other concretes with cement replacements, and that the replacement of cement by 15 % of CLETA and 7,5% of ground limestone is beneficial considering the technical and environmental aspect for w/b ratios of 0.50 (used for usual concretes). For lower w/b ratios, or for increased substitution rate, a more detailed study should be performed because the risk of spalling occurrence increases noticeably. Likewise, the use of the UPV test to assess the material integrity conditions is valid and feasible, but the viability of using the dynamic modulus in this situation was not conclusive. |
publishDate |
2019 |
dc.date.issued.fl_str_mv |
2019-07-18 |
dc.date.accessioned.fl_str_mv |
2020-03-05T21:05:28Z |
dc.date.available.fl_str_mv |
2020-03-05T21:05:28Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/19746 |
url |
http://repositorio.ufsm.br/handle/1/19746 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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300100000003 |
dc.relation.confidence.fl_str_mv |
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 |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Engenharia Civil |
dc.publisher.initials.fl_str_mv |
UFSM |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Engenharia Civil |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria Centro de Tecnologia |
dc.source.none.fl_str_mv |
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