Análise de índices físicos e propriedades geotécnicas de aterros sanitários da região nordeste do Brasil

Abstract

Currently, the generation of waste is a problem that affects several spheres of society, since it is directly related to environmental, pathological and economic factors. Sanitary landfills are structures designed to receive solid urban waste and must be designed taking into account the mechanical properties of the soil. This research aimed to collect and analyze data on the physical properties of urban solid waste from landfills in the Northeast region and these properties included data on composition, physical indexes and geotechnical properties of landfills in the Northeast of Brazil. Such data were obtained through bibliographic research, active or deactivated landfills, and the information was organized for use in future works related to the theme. The main sources for obtaining the information were the repositories of federal universities, where information was collected on the physical indices of urban solid waste and the mechanical properties of landfills, such as moisture content, gravimetric composition, specific weight and particle size distribution. Data on geotechnical properties have also been obtained, however more sparingly. The data for each landfill was analyzed and compared. It was found that there was a variation between the percentages of organic matter and a dependence on factors such as time of deposition and local economic level. Regarding resistance, an essential property for the assessment of slope stability, a relationship was observed between the cohesive intercept and the content of compounds deposited in the cells.