Laboratorial studies of lateritic residual soils to assess liner's behavior
DOI:
https://doi.org/10.14195/2184-8394_94_2Abstract
In order to evaluate the behaviour of a mixture of two lateritic residual soils as a liner, laboratorial experiments were carried out to assess geotechnical, mineralogical and physicochemical characteristics for these materiais that occur in Southeast of Brazil. For the geotechnical characterization grain size distribution, Atterberg limits and permeability tests were performed. Differential thermic analysis and X-Ray difractometry tests were applied to verify the mineralogy of the fine fraction. Toe physicochemical characteristics have been done by the determination of the cation exchange capacity, specific surface, pH in water and KCI, potentiometric titration and buffer capacity. Column tests with
inorganic contaminants were carried out to assess the retardation factor and distribution coefficient. Toe results have led to the conclusion that the mixture presents basic conditions concerning Cu++, CI- and K+ retention in the concentrations range of 10 to 41O ppm.
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References
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