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Previous issue date: 2007-12-21 / Population growth experienced in major cities, allied to society s need of infra-structure, especially ones related to habitational demands, increases the consumption of construction materials. As a consequence, consumption of natural resources itself. Thus, due to this process, concrete is one of the most produced materials in civil construction. This is also due to the great diversity of its application, easiness in its execution and adequate mechanical performance, as well as low production costs. Following the same tendencies in construction development, the ceramic industry has intensified the production of porcelain ceramic tiles and floors. These are achieved by a fine finishing and receive polishing at the end of the fabrication process. This work researched the use of porcelain residues in polishing for the production of concrete. All of which; due to economical and environmental issues. This process aims to prove adequate destiny for this type of residue, due to environmental issues, incorporating it to the concrete itself; all of which provides economy in consumption of the materials that constitute concrete. Thus, the main characteristics of concrete were investigated through the inclusion of different concentration of the porcelain residue as additional trait element. The residue rates incorporated to the trait varied from 10% to 50% in relation to the cement mass, in the traits with plastic additives and without plastic additives. It is observed that the inclusion of porcelain residue produced a meaningful alteration in the consistency of fresh concrete. This residue has a fine granulometry and it considerably absorbed the water used in the concrete spreading, influencing the way this material is dealt with. Thus, the value of cement striking decreases with the increase of residues present in trait. The maximal incorporation of the residue was of 50%, massively, for the same factor water/initial cement. The use of residues in concrete results in an 40% increase in the compression resistance. It is also proportional to residue concentration of porcelain in the trait. The microstructure was also favored once porosity and concrete absorption decreases with the use of this residue. The parameters demonstrate the quality and durability of the concrete produced with this residue. The use of porcelain residue in concrete composition has not produced meaningful thermal behavior changes. Thermal conductivity, heat capacity and thermal diffusivity have been maintained basically constant / O crescimento populacional nos grandes centros, aliado a necessidade de gera??o de infra-estrutura ? sociedade, est? obrigando a ind?stria da constru??o civil a intensificar suas atividade, principalmente no que se refere ? demanda habitacional, resultando no aumento do consumo de materiais de constru??o e, consequentemente, dos recursos naturais. Decorrente desse processo, o concreto destaca-se como um dos materiais mais produzidos na constru??o civil, pela grande diversidade de aplica??o, facilidade de execu??o e adequado desempenho mec?nico, al?m de apresentar baixo custo de produ??o. Seguindo a mesma tend?ncia de desenvolvimento da constru??o, a ind?stria cer?mica tem intensificado a produ??o de pisos cer?micos do tipo porcelanato, que consistem em elementos de acabamento fino e, por isso, recebem polimento ao final do processo de fabrica??o. Este trabalho pesquisou o emprego do res?duo do polimento de porcelanato para a produ??o de concreto por motivos econ?micos e ambientais. O objetivo consiste em gerar um destino adequado para o res?duo, por motivos ambientais, incorporando-o ao concreto, e, ainda, propiciar uma economia no consumo dos materiais constituintes do concreto. Para tanto, foram investigadas as principais caracter?sticas do concreto a partir da inclus?o de diferentes concentra??es do res?duo de porcelanato como elemento adicional no tra?o. Os teores de res?duo incorporados ao tra?o variaram de 10% a 50% em rela??o ? massa de cimento, em tra?os com aditivo plastificante e sem aditivo plastificante. O acr?scimo do res?duo de porcelanato alterou significativamente a consist?ncia do concreto fresco. O res?duo apresenta uma granulometria muito fina e, por isso, absorveu consideravelmente a ?gua de amassamento do concreto, influenciando, assim, na trabalhabilidade do mesmo. Portanto, o valor do abatimento diminui com o aumento da concentra??o do res?duo no tra?o. A incorpora??o m?xima de res?duo foi de 50% , em massa, para o mesmo fator ?gua/cimento inicial. A utiliza??o do res?duo no concreto resultou em um aumento de at? 40% na resist?ncia ? compress?o, sendo proporcional a concentra??o do res?duo de porcelanato no tra?o. A microestrutura tamb?m foi favorecida, ? medida que a porosidade e a absor??o do concreto diminu?ram com a utiliza??o do res?duo. Esses par?metros atestam a qualidade e a durabilidade do concreto produzido com res?duo. A utiliza??o do res?duo de porcelanato na composi??o do concreto n?o gerou mudan?as significativas no comportamento t?rmico. A condutividade t?rmica, a capacidade calor?fica e a difusividade t?rmica se mantiveram basicamente constantes
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12694 |
| Date | 21 December 2007 |
| Creators | Souza, Paulo Alysson Brilhante Faheina de |
| Contributors | CPF:06117988320, http://lattes.cnpq.br/3318871716111536, Oliveira, Jo?o Bosco Lucena de, CPF:19127537404, http://lattes.cnpq.br/1360004695124740, Silva, Zelma Rocha da, CPF:09155546315, http://lattes.cnpq.br/9530744851546230, Marinho, ?rika Pinto, CPF:02381892443, http://lattes.cnpq.br/1192938961586608, Vieira, Lucianna da Gama Fernandes, CPF:42579716491, http://lattes.cnpq.br/9021473205267343, Melo, Marcus Ant?nio de Freitas, Melo, Dulce Maria de Ara?jo |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Ci?ncia e Engenharia de Materiais, UFRN, BR, Processamento de Materiais a partir do P?; Pol?meros e Comp?sitos; Processamento de Materiais a part |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | Portuguese |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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