Aproveitamento de resíduos da extração de micaxisto em pavimentos flexíveis

• Ano de defesa: 2008
• Autor(a) principal: ARAUJO, Weliton Eduardo Lima de
• Orientador(a): REZENDE, Lilian Ribeiro de
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal de Goiás
• Programa de Pós-Graduação: Mestrado em Engenharia do Meio Ambiente
• Departamento: Engenharias
• País: BR
• Palavras-chave em Português: Micaxisto; Pavimentação; Resíduos sólidos; Meio ambiente; 1.Pavimentos flexíveis Micaxisto uso 2.Pavimentos flexíveis Resíduos sólidos Uso 3.Pavimentação Resíduos sólidos Uso 4.Pavimentação Micaxisto Uso
• Palavras-chave em Inglês: Micaxist; Pavement; Solid waste; Environment
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS::ENGENHARIA SANITARIA::RECURSOS HIDRICOS
• Link de acesso: http://repositorio.bc.ufg.br/tede/handle/tde/597

The recycling of materials has been strengthened as an efficient mechanism to minimise the problems caused by improper disposal of solid waste from human activities. Accordingly, the search for mechanisms able to absorb the waste from quarry, coming from the production of aggregates for construction, it becomes an important tool for mitigating externalities generated by the accumulation of such material. So the main objective of this research was to study the use of waste material from quarry as the basic constituent of layers and sub-base of flexible pavements. The residue studied comes from the processing of micaxist, and then called the dust of micaxist, coming from the quarry of the Department of Roads Rodagem the city of Goiania (DERMU-COMPAV). To assess the mechanical behavior, laboratory tests have been conducted (specific weight, Limits of consistency, size, compression, expansion and California Bearing Ratio) for samples: 1 (100% of micaxist powder), 2 (20% of powder micaxist and 80% soil), 3 (30% of powder micaxist and 70% only), 4 (soil), 5 (gravel) and 6 (30% crushed 1 and 70% soil). To assess the performance on the field of materials studied, was built in August and September 2007, a trial with a sentence of 300 meters, located at Amélia Rosa street, the site of Ipês, in Goiânia-Goiás, being divided into three sub-sections (soil + micaxisto of dust, soil + 1 and crushed gravel). The behaviour of these sub-sections were examined by means of testing the vial of sand, Speedy, proof of cargo on board, and dynamic cone penetromet, made during the execution of the sentence trial. With the data collected can be verified that the materials studied, with the exception of Sample 1, have shown properties physical and mechanical satisfactory, reflecting in a good technical performance in the laboratory and in field. The gravel had better results both in the laboratory to the field, proving the efficiency of such material has traditionally used in flooring. In general, concluded that for the dust of micaxist, the best performance was obtained for dosing 20% (Sample 2), comparable to traditional materials, thus demonstrating the possibility of using such waste in layers of sub-base and base of flexible pavements.