The critical state model and the granitic residual soil – the influence of BTEX
DOI:
https://doi.org/10.14195/2184-8394_124_2Keywords:
Residual granitic soil, Contamination, Critical state model, Mechanical behaviourAbstract
The effects of pollution by petrol (BTEX), in the residual granitic soil, are evaluated in terms of mechanical behaviour. With the analysis and formulation of the conceptual model of the intrinsic behaviour, one checks the applicability of the model of critical state and defines a surface of limit state that will be the motivation for the analysis of the soil when contaminated. In structured soil, the shift from the predicted by the model of critical state allows to understand the peculiarities of its behaviour, depending on the fabric, bonding and alteration degree. The stress-strain and the stress-dilatancy behaviour of these soils when contaminated will be useful to define a mechanical model. The presence of mega crystals of potassium-sodic feldspar, with fragile/plastic behaviour, during the process of confinement/compressing will have influence on the results that will be more obvious when the soil is contaminated, with probable collapse of the fabric.
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References
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