Numerical prediction of the creep behaviour of an unstabilised and a chemically stabilised soft soil |
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| Institution: | 1. Departamento de Ingeniería Estructural y Geotécnica, Pontificia Universidad Católica de Chile, Chile;2. Research Institute of Mining and Environment (RIME UQAT-Polytechnique), Department of Civil, Geological and Mining Engineering, Polytecnique Montréal, Québec, Canada;3. Petrus Consultores Geotécnicos Ltda. Chile |
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| Abstract: | This paper examines the ability of volumetric and deviatoric creep laws associated with constitutive models to simulate the creep behaviour of a soft soil in its natural state or chemically stabilised state. Initially, the models/laws are validated by oedometer and triaxial creep tests, for the stabilised and unstabilised soils. Finally, the long-term behaviour of an embankment built on a soft soil reinforced with deep mixing columns is predicted based on the properties for a curing time of 28 days. The results show that the creep phenomenon should be considered in a long-term analysis of deep mixing columns. |
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| Keywords: | Creep Soft soil Stabilised soil Deep mixing columns Embankment on soft clay Numerical modelling |
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