Características de pastas de cimento Portland com adição de cinza de lodo de ETA
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/7930 |
Resumo: | Currently, it is increasing the search for alternatives to minimize the environmental impact on inputs production. Concrete, highly polluting, is the second most natural material used by man, losing just for the water. Mineral additions have been investigated as partial replacement of cement in concrete, because, besides of providing the use of industrial waste, it can offer improvements in material characteristics. This study analyzed the microstructure of cement pastes composed by sludge produced in water treatment plants (WTP). Seven different traces were investigated: a reference one and 6 traces adding WTP sludge ash in different levels of 5, 10, 15, 20, 25 and 30%. Each trace has been developed to three water/binder (w/b) ratios (0.35, 0.50 and 0.65), ending in 21 different traces, which were studied for different healing ages. Assays of Calorimetry, thermogravimetric analysis (TGA/DTA), setting time, DRX, porosity by mercury intrusion (PIM), chemically combined water, electrical conductivity and hydrogen potential (pH); were performed. From the results, it appears that the increased cement replacement content by WTP sludge ash resulted in an increase in the start and end times of the setting time and decrease in electric conductivity and pH testing. Likewise, a reduction in remnant CH amounts with the increase in WTP sludge ash content shown in TG and XRD tests, as well as reduction in hydration heat because of less formation of side C-S-H. The results for combined chemical water increased when the relations w/b and the WTP sludge ash also increased. When compared to the reference mixture, the increase in WTP sludge ash content resulted in PIM values and the like, although an increase is found in the total area of pores due to change in pore size distribution. |
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2016-09-142016-09-142016-03-28STEIN, Ronei Tiago. Concrete folder features with Portland ETA sludge ash addition. 2016. 156 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016.http://repositorio.ufsm.br/handle/1/7930Currently, it is increasing the search for alternatives to minimize the environmental impact on inputs production. Concrete, highly polluting, is the second most natural material used by man, losing just for the water. Mineral additions have been investigated as partial replacement of cement in concrete, because, besides of providing the use of industrial waste, it can offer improvements in material characteristics. This study analyzed the microstructure of cement pastes composed by sludge produced in water treatment plants (WTP). Seven different traces were investigated: a reference one and 6 traces adding WTP sludge ash in different levels of 5, 10, 15, 20, 25 and 30%. Each trace has been developed to three water/binder (w/b) ratios (0.35, 0.50 and 0.65), ending in 21 different traces, which were studied for different healing ages. Assays of Calorimetry, thermogravimetric analysis (TGA/DTA), setting time, DRX, porosity by mercury intrusion (PIM), chemically combined water, electrical conductivity and hydrogen potential (pH); were performed. From the results, it appears that the increased cement replacement content by WTP sludge ash resulted in an increase in the start and end times of the setting time and decrease in electric conductivity and pH testing. Likewise, a reduction in remnant CH amounts with the increase in WTP sludge ash content shown in TG and XRD tests, as well as reduction in hydration heat because of less formation of side C-S-H. The results for combined chemical water increased when the relations w/b and the WTP sludge ash also increased. When compared to the reference mixture, the increase in WTP sludge ash content resulted in PIM values and the like, although an increase is found in the total area of pores due to change in pore size distribution.Atualmente a busca por alternativas para minimizar o impacto ambiental na produção de insumos vem aumentando. O concreto é o segundo material mais utilizado pelo homem, perdendo apenas pelo consumo de água. Adições minerais têm sido investigadas como substituição parcial ao cimento no concreto, pois, além de propiciar o aproveitamento de resíduos industriais, podem contribuir nas propriedades do material. Este estudo analisou a microestrutura de pastas de cimento compostas por diferentes teores de cinza de lodo de Estação de Tratamento de Água (CLETA). Foram investigados 7 traços diferentes: um traço de referência e 6 traços com adição de CLETA, para teores de 5, 10, 15, 20, 25 e 30%. Cada traço foi desenvolvido para 3 relações a/ag (0,35, 0,50 e 0,65), totalizando 21 diferentes traços, que foram estudados para diferentes idades de cura. Foram realizados ensaios de calorimetria, análise termogravimétrica (TG), tempo de início e fim de pega, difração de raios X (DRX), Porosidade por Intrusão de Mercúrio (PIM), água quimicamente combinada, condutividade elétrica e potencial de hidrogênio (pH). Dos resultados obtidos, constata-se que o aumento no teor de substituição de cimento por CLETA resultou em aumento nos tempos de início e fim de pega e diminuição na condutividade elétrica e nos valores de pH. Da mesma forma, houve uma redução nos valores de CH remanescente com o aumento no teor de CLETA, evidenciado nos ensaios de TG e DRX, assim como, redução no calor de hidratação devido a menor formação de C-S-H secundário. O teor de água quimicamente combinada aumentou com o aumento na relação a/ag e do de teor de CLETA. Quando comparado à mistura de referência, o aumento no teor de CLETA resultou em valores de PIM semelhantes, embora constate-se aumento na área total de poros, devido a alteração na distribuição de tamanho destes.Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Engenharia CivilUFSMBREngenharia CivilCimento PortlandAdições mineraisMicroestrutura das pastasPortland cementMineral additionsMicrostructure pastesCNPQ::ENGENHARIAS::ENGENHARIA CIVILCaracterísticas de pastas de cimento Portland com adição de cinza de lodo de ETAConcrete folder features with Portland ETA sludge ash additioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisGastaldini, Antonio Luiz Guerrahttp://lattes.cnpq.br/9293085240832049Isaia, Geraldo Cechellahttp://lattes.cnpq.br/8260652949733370Guimarães, André Tavares da Cunhahttp://lattes.cnpq.br/8091918519299243http://lattes.cnpq.br/6324554709365759Stein, Ronei Tiago3001000000034003003003003006a6bd4d6-e9f2-46f6-9245-5aefb19c7a286a9c2059-9ae9-43f1-880d-7decd4ea632077820f74-3115-4fb7-ad76-0c65fc11b1c9b83053cc-a1df-46ca-906b-d03802bcbabeinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALSTEIN, RONEI TIAGO.pdfapplication/pdf4720416http://repositorio.ufsm.br/bitstream/1/7930/1/STEIN%2c%20RONEI%20TIAGO.pdf8365076f5fd9c9bf38f6b10c8223107dMD51TEXTSTEIN, RONEI TIAGO.pdf.txtSTEIN, RONEI TIAGO.pdf.txtExtracted texttext/plain244957http://repositorio.ufsm.br/bitstream/1/7930/2/STEIN%2c%20RONEI%20TIAGO.pdf.txtf1593f5c5bb1005003c4bedbcc089aafMD52THUMBNAILSTEIN, RONEI TIAGO.pdf.jpgSTEIN, RONEI TIAGO.pdf.jpgIM Thumbnailimage/jpeg4465http://repositorio.ufsm.br/bitstream/1/7930/3/STEIN%2c%20RONEI%20TIAGO.pdf.jpgd6621a860d9f39f537e50003a517f607MD531/79302022-03-15 15:51:34.704oai:repositorio.ufsm.br:1/7930Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-03-15T18:51:34Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
dc.title.alternative.eng.fl_str_mv |
Concrete folder features with Portland ETA sludge ash addition |
title |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
spellingShingle |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA Stein, Ronei Tiago Cimento Portland Adições minerais Microestrutura das pastas Portland cement Mineral additions Microstructure pastes CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
title_short |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
title_full |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
title_fullStr |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
title_full_unstemmed |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
title_sort |
Características de pastas de cimento Portland com adição de cinza de lodo de ETA |
author |
Stein, Ronei Tiago |
author_facet |
Stein, Ronei Tiago |
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.referee1.fl_str_mv |
Isaia, Geraldo Cechella |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/8260652949733370 |
dc.contributor.referee2.fl_str_mv |
Guimarães, André Tavares da Cunha |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/8091918519299243 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/6324554709365759 |
dc.contributor.author.fl_str_mv |
Stein, Ronei Tiago |
contributor_str_mv |
Gastaldini, Antonio Luiz Guerra Isaia, Geraldo Cechella Guimarães, André Tavares da Cunha |
dc.subject.por.fl_str_mv |
Cimento Portland Adições minerais Microestrutura das pastas |
topic |
Cimento Portland Adições minerais Microestrutura das pastas Portland cement Mineral additions Microstructure pastes CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
dc.subject.eng.fl_str_mv |
Portland cement Mineral additions Microstructure pastes |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
description |
Currently, it is increasing the search for alternatives to minimize the environmental impact on inputs production. Concrete, highly polluting, is the second most natural material used by man, losing just for the water. Mineral additions have been investigated as partial replacement of cement in concrete, because, besides of providing the use of industrial waste, it can offer improvements in material characteristics. This study analyzed the microstructure of cement pastes composed by sludge produced in water treatment plants (WTP). Seven different traces were investigated: a reference one and 6 traces adding WTP sludge ash in different levels of 5, 10, 15, 20, 25 and 30%. Each trace has been developed to three water/binder (w/b) ratios (0.35, 0.50 and 0.65), ending in 21 different traces, which were studied for different healing ages. Assays of Calorimetry, thermogravimetric analysis (TGA/DTA), setting time, DRX, porosity by mercury intrusion (PIM), chemically combined water, electrical conductivity and hydrogen potential (pH); were performed. From the results, it appears that the increased cement replacement content by WTP sludge ash resulted in an increase in the start and end times of the setting time and decrease in electric conductivity and pH testing. Likewise, a reduction in remnant CH amounts with the increase in WTP sludge ash content shown in TG and XRD tests, as well as reduction in hydration heat because of less formation of side C-S-H. The results for combined chemical water increased when the relations w/b and the WTP sludge ash also increased. When compared to the reference mixture, the increase in WTP sludge ash content resulted in PIM values and the like, although an increase is found in the total area of pores due to change in pore size distribution. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-09-14 |
dc.date.available.fl_str_mv |
2016-09-14 |
dc.date.issued.fl_str_mv |
2016-03-28 |
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.citation.fl_str_mv |
STEIN, Ronei Tiago. Concrete folder features with Portland ETA sludge ash addition. 2016. 156 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/7930 |
identifier_str_mv |
STEIN, Ronei Tiago. Concrete folder features with Portland ETA sludge ash addition. 2016. 156 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
url |
http://repositorio.ufsm.br/handle/1/7930 |
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Engenharia Civil |
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