Elementos construtivos e de proteção térmica à base de gesso e resíduos agroindustriais

Detalhes bibliográficos
Ano de defesa: 2014
Autor(a) principal: Noronha, Livia Lima
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal da Paraí­ba
BR
Engenharia Cívil e Ambiental
Programa de Pós-Graduação em Engenharia Urbana e Ambiental
UFPB
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/5548
Resumo: The sustainable construction concept has attracted attention worldwide, seeing that already is against scarcity of natural resources and energy, solid waste generation and emission of gases that damage the planet increasingly. This study invetigated the possibility the use of vegetable fibers pseudostem of banana and pulp packaging of cement for the development of composites that stand out for its reinforcing properties and thermal. The use of renewable materials can help reduce the strain on the environment. Packages of Portland cement are in Kraft paper and the vast majority are discarded into the environment. However, as they contain pulp fibers (cellulose) can be used as reinforcement in matrix. To obtain the pulp coming from cement bags, they were cut into pieces and passed in a paper shredder. Then the crushed material was immersed in water and passed on an industrial blender. In mixtures prepared with the fiber banana fiber percentages of 2% and 4% and the water / gypsum ranging from 0.4 to 0.7 were tested. The trace with 4% fiber and the water / plaster 0.5 resulted in a resistance of 2.80 MPa, while the mark with 2 % fiber and 0.4 of the water / gypsum produced a composite resistor 5 , 87 MPa. It is observed that by reducing the amount of fiber in the composite and the water / plaster, resistance increased due to voids also decreased . For the optimization of mixtures made with the pulp ranged up the water / plaster. The features were always molded to a ratio of 1 kg of gypsum / 0.08 kg pulp / 0.01 retardant additive. The variation of the water / gypsum was tested to get the best strength and workability. The best water / plaster ratio is 0.7. The results obtained by the method of hot plate protected, we found good results mainly the thermal properties of composites prepared with plaster and pulp packaging of cement. The test of thermal conductivity of the composite using the hot plate method showed that decreased compared to the plaster without reinforcement.