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Obten??o e caracteriza??o de um comp?sito que utiliza rejeitos de brita, cer?mica vermelha e vidro para fabrica??o de blocos para a constru??o civilLeite, Jer?nimo Mailson Cipriano Carlos 30 June 2017 (has links)
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Previous issue date: 2017-06-30 / A utiliza??o de materiais comp?sitos para a constru??o civil tem sido objeto de estudo acad?mico em universidades e centros de pesquisa no Brasil e no mundo. Um dos elementos motivadores ? o d?ficit habitacional que os pa?ses principalmente do terceiro mundo enfrentam. No Brasil, entre 2010 e 2014, esse d?ficit alcan?a mais de 6,5 milh?es de moradias, em torno de 12 % dos domic?lios do pa?s. Esse trabalho apresenta um comp?sito que foi obtido a partir de res?duos gerados na ind?stria da constru??o civil (brita e cer?mica), res?duos de vidro gerados pela ind?stria vidraceira e elementos comuns em materiais da constru??o, tais como cimento, areia e ?gua. Esses res?duos causam grandes danos ao meio ambiente e s?o jogados nos aterros em grandes quantidades. O trabalho foca no uso de tr?s res?duos para a obten??o o comp?sito e na fabrica??o de dois tipos de blocos, um maci?o usado para piso e um vazado para ser usado em fechamentos verticais em edifica??es, podendo ser utilizados como alvenaria estrutural ou de veda??o. Utilizou-se doze formula??es, sendo duas delas servindo refer?ncia denominadas formula??es Padr?es, e posteriormente foram selecionadas as seis de melhores resultados mec?nico, incluindo uma padr?o com Cimento, Areia M?dia e ?gua. As formula??es escolhidas foram caracterizadas, determinando-se as resist?ncias ? compress?o axial e diametral, a absor??o de ?gua por capilaridade e imers?o total, a densidade e as propriedades t?rmicas. Foram confeccionados blocos com duas das formula??es do comp?sito de melhores resultados gerais utilizando formas especialmente fabricadas para este fim. Os resultados mais expressivos do comp?sito foram obtidos para a resist?ncia mec?nica ? compress?o que atingiu valor superior a 13 Mpa, absor??o de ?gua com resultados inferior a 7,5 %, Densidade inferior a 2,5 g/cm?, Condutividade com valores pr?ximos a 5 W/m.K e Difusividade inferior a 4 mm?/s. Estes resultados permitem que o comp?sito possa ser utilizado tanto na fabrica??o de blocos para alvenaria de veda??o quanto estrutural, tornando-o mais vers?til na ind?stria da constru??o civil. / The use of composite materials for civil construction has been the object of academic study in universities and centers of research in Brazil and worldwide. One of the motivating factors is the housing deficit that the countries of the third world are facing. In Brazil, between 2010 and 2014, this deficit reaches more than 6.5 million homes, around 12% of the country's households. This work presents a composite that was obtained from waste generated in the construction industry (gravel and ceramics), glass waste generated by the glazing industry and common elements in construction materials, such as cement, sand and water. These wastes cause great damage to the environment and are disposed of in landfills in large quantities. The work focuses on the use of three residues to obtain the composite and in the manufacture of two types of blocks, a solid one used for floor and one to be used in vertical closings in buildings, being able to be used as structural masonry or of sealing. Twelve formulations were used, two of them serving reference denominated Standard formulations, and later were selected the six of better mechanical results, including a standard with Cement, Average Sand and water. The chosen formulations were characterized, determining the resistance to axial and diametrical compression, water absorption by capillarity and total immersion, density and thermal properties. Blocks were made with two of the best overall composite formulations using specially fabricated forms for this purpose. The most expressive results of the composite were obtained for the mechanical resistance to compression reaching a value higher than 13 MPa, absorption of water with results lower than 7.5 %, Density less than 2.5 g/cm?, Conductivity with values close to 5 W/m.K and diffusivity less than 4 mm?/s. These results allow the composite to be used both in the manufacture of structural and masonry blocks, making it more versatile in the construction industry.
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Planejamento e d?ficit habitacional: estudo de caso a partir do cad?nico com benefici?rios do programa bolsa fam?lia na zona norte de NatalPimentel, Sandro de Oliveira 04 February 2015 (has links)
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Previous issue date: 2015-02-04 / Esta pesquisa tem como objetivo analisar as condi??es habitacionais e
socioecon?micas de benefici?rios do Programa Bolsa Fam?lia ? PBF da Zona Norte
de Natal. Para tanto, foi necess?rio um levantamento das origens dessa regi?o e de
como ocorreu sua expans?o no contexto do desenvolvimento urbano local,
considerando sua evolu??o demogr?fica, em especial, a partir da constru??o dos
conjuntos habitacionais e loteamentos formais e informais. A partir da pesquisa de
campo, composta de um piloto in loco com algumas fam?lias residentes, tornou-se
poss?vel iniciar a an?lise das condi??es habitacionais que culminou em um estudo
detalhado do Cadastro ?nico do governo federal (Cad?nico), em rela??o a 100%
(cem por cento) dos benefici?rios do Programa Bolsa Fam?lia (PBF) de Natal, com
informa??es qualitativas e quantitativas. A partir desse levantamento geral, fez-se
um recorte contemplando apenas os benefici?rios residentes na Zona Norte da
cidade. Para melhor compreender essa realidade, a pesquisa verificou o d?ficit
habitacional brasileiro, considerando suas origens, contextos hist?ricos e os
conceitos utilizados pelas seguintes institui??es: Funda??o Jo?o Pinheiro (FJP),
Instituto Brasileiro de Geografia e Estat?stica (IBGE), Instituto de Pesquisa
Econ?mica Aplicada (IPEA), al?m do Plano Local de Habita??o de Interesse Social
(PLHIS) e do Programa das Na??es Unidas para os Assentamentos Humanos (UNHABITAT).
Ademais, foram comparados os diversos conceitos de cidade e sua
respectiva evolu??o, considerando a import?ncia do planejamento como instrumento
de pol?ticas p?blicas necess?rias ?s a??es governamentais e pol?ticas permanentes
de Estado. Aponta-se, como resultado, para a import?ncia da utiliza??o do Cadastro
?nico do governo federal como instrumento eficaz para mensurar as condi??es de
habitabilidade dos munic?pios brasileiros. / This research aims to analyze the housing conditions and socioeconomic of
beneficiaries of the Bolsa Fam?lia Program ? PBF of the North side of Natal city. For
that, it is necessary a survey of this region's origins and how its expansion has
occurred in the context of local urban development, considering demographic
evolution, in particular, from the construction of housing complex and formal and
informal allotments. From the field research, consisting of a pilot in loco with some
households, it became possible to start the analysis of housing conditions that
culminated with a detailed study of the Single Register form of the federal
Government (Cad?nico), in relation to 100% (one hundred percent) of the
beneficiaries of the Bolsa Familia program (PBF) of Natal city, with qualitative and
quantitative information. From this general survey, a cut was done, contemplating
only beneficiaries residing in the north of the city. To better understand this reality,
the survey found the Brazilian housing deficit, considering its origins, historical
contexts and concepts used by the following institutions: Jo?o Pinheiro Foundation
(FJP), Brazilian Institute of Geography and Statistics (IBGE), Applied Economics
Research Institute (IPEA), and Local Plan Housing of Social Interested (PLHIS) and
the United Nations Centre for Human Settlements (UN-HABITAT). Furthermore, were
compared the various concepts of city and its respective evolution, considering the
importance of planning as an instrument of public policy necessary to governmental
actions and permanent policy of State. As a result, there are a detach about the
deficit and housing conditions in the city of Natal, mainly North Zone, pointing out the
importance of using the Unified Register of the federal government as an effective
tool to measure the living conditions of Brazilian municipalities.
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