EFFECT OF THE COMPACTION METHOD ON THE PERMEABILITY OF AN ORGANIC COMPOUND-COLLUVIONAR SOIL MIXTURE / INFLUÊNCIA DO MÉTODO DE COMPACTAÇÃO NA PERMEABILIDADE DE UMA MISTURA COLÚVIO-COMPOSTO ORGÂNICO

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

The liner is one of the most important elements in a sanitary landfill project, since it works as a barrier capable to impede seepage of pollutant substances through the subsurface. This element is usually built with materials that have low permeability. The choice of the right material as well as the control and supervision of the constructive processes are fundamental to achieve a good liner performance. The compaction process is extremely important in this type of geotechnical impoundment. Laboratory compaction intends to reproduce the field conditions; however, in some cases, there happen to be important differences between the compaction mechanisms used, the preparation of the material before the densification process and the specimens characteristics, which cause discrepancies between the permeability values obtained in the field and the ones obtained in the laboratory. The main objective of this study is to evaluate experimentally the effect of two different compaction mechanisms (dynamic, with standard Proctor and static, with the kneading compaction method) in the hydraulic conductivity of a colluvionar soil and an organic compound for their eventual use in a liner. The tests were executed using specimens with different water contents, prepared with colluvionar soil extracted from the Experimental Field II at the PUC-Rio, with the organic compound, and with mixtures of both materials in different proportions.

ASSUNTO(S)

permeabilidade kneading compactor compactador pneumatico compactacao colluvionar soil liner permeability linear organic compound composto organico compaction coluvio

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