Constitutive Modeling of the Permeability Behavior of Compacted Clay Liners in Landfills by Using Factorial Design (original) (raw)
Compacted clay liners (CCL) are structures designed for waterproofing in landfills in order to avoid contamination of the subsoil, rivers and adjacent aquifers. These liners are not always able to meet the permeability requirements demanded by technical standards. For this, the addition of materials, such as bentonite, and the alteration of geotechnical parameters can be viable alternatives to achieve this permeability. The objective of this research was to obtain predictive models of water permeability in landfill liners and analyze the significance of the studied factors. Mixtures were made of sand from the Sanitary Landfill in the municipality of Campina Grande-Paraiba-Brazil (Soil 1) and bentonite (Soil 2), from the municipality of Boa Vista-Paraiba. For the execution of these CCL, a factorial design was carried out, having as independent variables compaction energy, water content and bentonite percentage. The dependent variable was the water permeability coefficient for the CCD...
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