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Previous issue date: 2008-10-08 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / In building, during the implementation process of major or even minor works, there is a considerable waste of plaster in the steps of coating, making it is a
negative factor because of the loss of these processes constructive remains incorporated into buildings, as component, whose final dimensions are higher than those projected. Another negative factor is the disposal of waste gypsum in inappropriate places, thus contributing to the degradation of environmental
quality, due to the leaching of this waste and may trigger the formation of sulfuric acid. Therefore, based on this picture, processing and reuse of waste
coating, combined with the ceramics industry, which is a strong potential in the reuse of certain types of waste, promote mutual benefits. Thus the overall
objective of this work is to conduct a search with scientific and technological aspects, to determine the effect of the incorporation of the residue of plaster for
coating, from the building, the formulation of bodies for red ceramic. The residue of plaster coating was collected and characterized. They were also
selected raw materials of two ceramic poles of the state of Rio Grande do Norte and formulations have been made with the intention of obtaining those with the
best physical and mechanical properties, the residue was added the percentage of 5%, 10%, 15%, 20%, 25% and 30%, in the best formulation of ceramic
industry 1 and, according the properties analyses, 5%, 10% and 15% as the best results of ceramic industry 2. The samples were sintered at temperatures
of 850 ?C, 950 ?C and 1050 ?C, the heating rate of 5 ?C / min with isotherm of two hours. They were submitted to testing technology, such as lineal shrinkage, water absorption, apparent porosity, apparent density and bending resistence. The residue incorporation best results in the formulations of mass in red
ceramic, were observed between the temperatures of 850 ?C and 950 ?C, in those formulations that have illite clays and medium plastic in their composition,
in the range of 0% to 15% residue incorporated / Na constru??o civil, durante o processo de execu??o de grandes ou at? mesmo pequenas obras, h? um desperd?cio consider?vel de gesso nas etapas de
revestimento, tornando-se este um fator negativo, pois parte das perdas destes processos construtivos permanece incorporada nas constru??es, na forma de
componentes, cujas dimens?es finais s?o superiores ?quelas projetadas. Outro fator negativo ? a disposi??o dos res?duos de gesso em locais inadequados, contribuindo assim para a degrada??o da qualidade ambiental, devido ao processo de lixivia??o deste res?duo, podendo desencadear na forma??o de ?cido sulf?rico. Baseado neste panorama, a transforma??o e o reaproveitamento dos res?duos de revestimento, aliada ? ind?stria da cer?mica, que ? um forte potencial no reaproveitamento de alguns tipos de res?duos, promoveria benef?cios m?tuos. O objetivo geral deste trabalho foi de realizar uma pesquisa com aspectos cient?ficos e tecnol?gicos, para verificar o efeito da
incorpora??o do res?duo de gesso para revestimento, proveniente da constru??o civil, na formula??o de massas para cer?mica vermelha. As mat?rias-primas foram coletadas de dois p?los cer?micos do Estado do Rio Grande do Norte e formuladas com o intuito de obter aquelas com as melhores propriedades f?sicas e mec?nica, tendo sido incorporados os percentuais 5%,
10%, 15%, 20%, 25% e 30% de res?duo, na melhor formula??o da ind?stria cer?mica 1 e, de acordo com a an?lise dos seus resultados, de 5%, 10% e 15%
na melhor formula??o da ind?stria cer?mica 2. As amostras foram sinterizadas ?s temperaturas de 850 ?C, 950 ?C e 1050 ?C, ? taxa de aquecimento de 5 ?C/min com isoterma de duas horas e submetidas a ensaios tecnol?gicos, como retra??o linear de queima, absor??o de ?gua, porosidade aparente, massa espec?fica aparente e resist?ncia mec?nica ? flex?o. Os melhores resultados de incorpora??o do res?duo nas formula??es de massa de cer?mica vermelha foram observados na faixa de temperatura de 850 ?C a 950 ?C, naquelas que possuem argilas il?ticas e medianamente pl?sticas em sua composi??o, na faixa de 0% a 15% de res?duo incorporado
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/12717 |
| Date | 08 October 2008 |
| Creators | Silva, Jaquel?gia Brito da |
| Contributors | CPF:05012180410, http://lattes.cnpq.br/9858094266525225, Acchar, Wilson, CPF:50580396720, http://lattes.cnpq.br/5460040602567184, Dutra, Ricardo Peixoto Suassuna, CPF:91875838449, http://lattes.cnpq.br/0075804072604913, Silva, Gilson Garcia da, CPF:56634161453, http://lattes.cnpq.br/8681275097040450, Pontes, Luiz Renato de Ara?jo, CPF:26401940468, http://lattes.cnpq.br/4820371851760936, Nascimento, Rubens Maribondo do, Gomes, Uilame Umbelino |
| 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 | English |
| 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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