Avaliação da utilização de geomembranas nas obras de aterros sanitários em detrimento das argilas

Abstract

This study aims to evaluate the possibility of using geomembranes in landfill sites partially replacing the clays that are frequently used. Geomembranes are types of geosynthetics, which in turn are polymeric, synthetic or natural products, developed to perform functions such as reinforcement, filtration, waterproofing and so forth. The main function of geomembranes is waterproofing, which is the ability to prevent or block the migration of fluids, whether liquids or gases, out or into a given system or building. Geomembranes act as liners which are devices used to retain the percolation of liquid as much as possible so they do not reach the waters and natural soil. On the theoretical basis, a study is made based on geosynthetics, types and their respective functions, urban solid waste, as well as their generation and collection in the country, in addition to the destination adopted by Brazilian municipalities. The study also addresses, in more detail, landfills, what they are and the types of liners, clays and geomembranes. In short, the present study was done by evaluating the advantages and disadvantages of both clays and geomembranes, as well as the analysis of two building cases. Finally, it was observed that geomembranes are quite efficient when handled carefully. Besides, it is evident that the use of geomembranes is more than necessary for safer and more eco-friendly landfill sites.