Influence of compaction in the erodability of a partially saturated soil due to a concentrated leak Ricardo Neves Correia dos Santos*
DOI:
https://doi.org/10.14195/2184-8394_125_1Keywords:
Embankment dams, internal erosion, tubular erosion, ErodibilityAbstract
The Hole Erosion Test (HET) was used to evaluate the erodability of a soil resulting from schist alteration, which has potential to be used in the core of an embankment dam or in a homogeneous embankment. There were performed 24 HETs with partially saturated samples. The samples were compacted with three predefined compaction energies and with different water contents. It was evaluated the influence of compaction characteristics in the erodability of the soil, namely, in the soil erosion rate and the ease of initiation of erosion (i.e. critical shear stress). A relevant influence of the water content in the resistance to erosion was observed. Additionally, there were performed two HETs, in which the sample was subjected to wetting, prior to the test, to evaluate the effect in erosion resistance of soil expansion..
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