Melhoria das propriedades do gesso com aditivo sintético e com látex de euphorbia tirucalli e de hevea brasiliensis para uso na construção de habitações de interesse social.

• Ano de defesa: 2012
• Autor(a) principal: Nogueira, Jesus Charles do Amaral
• 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
• Palavras-chave em Português: Gesso; Aveloz; Seringueira; Aditivo; Sustentabilidade; Plaster; Petroleum plant; Rubber; Admixture; Sustainability; ENGENHARIAS::ENGENHARIA CIVIL
• Link de acesso: https://repositorio.ufpb.br/jspui/handle/tede/5462

One of the greatest challenges facing humanity is to use the environment in a rational manner and with respect to do not endanger its existence or that of the future generations. All construction activity and occupation of areas generates an environmental impact that may be irreversible, depleting natural resources or polluting the land, air or water courses. This work aims to improve the technique of using gypsum source by adding products from natural, renewable, eco-efficient and environmentally friendly, in order to maximize their application in the construction of social, low cost an energy efficient houses. The study demonstrated the feasibility of using the latex plant to improve the properties of plaster. Latex of two plants from the family Euphorbiáceas, Hevea brasiliensis, known as rubber and Euphorbia tirucalli, known as Aveloz, were used to develop a new admixture for gypsum pisces. Through laboratory testing and literature review has been proven the beneficial effect of the latex of Euphorbia tircucalli in gypsum pastes was firmed. The material gave greater plasticity, reduced heat of hydration, improved the set time. In the hardened state, greater resistance to water erosion and greater compression strength was reached. The results obtained with the latex admixture were compared to those obtained in pastes and hardened specimens with low water / gypsum relation, without and with superplasticizer for concrete and mortar. Scanning electronic microscopy and X-ray diffraction showed no change in the structure of hardened gypsum with the latex. Finally, the results encouraged patenting two additive products and the deposit already was made in the National Institute of Industrial Property.