Modelling the behaviour of unsaturated non-active clays in saline environment
نویسندگان
چکیده
The chemical composition of pore fluid and matric suction rule the mechanical behaviour soils. In case clays, their fabric changes in line with those variables. Since both increase salinity cause a transition from an open to close microstructure low medium activity clayey materials, unique framework could tackle problems where saturation are expected. This paper presents simple elasto-plastic model capable reproducing unsaturated soils saline environments. Changes addressed through use osmotic as variable. proposed extends Barcelona Basic Model for partially saturated consider effect suction. model, implemented Thebes code, is calibrated Boom Clay. reproduced tests include loading at different suctions oedometric conditions, well more complex chemo-mechanical stress paths. Despite simplicity formulation, agreement between experimental results simulations encouraging. It seems that modelling approach addresses most important features which slightly or moderately expansive.
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Modelling the mechanical behaviour of expansive clays
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ژورنال
عنوان ژورنال: Engineering Geology
سال: 2021
ISSN: ['1872-6917', '0013-7952']
DOI: https://doi.org/10.1016/j.enggeo.2021.106441