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Erschienen in:
2021 | OriginalPaper | Buchkapitel
Modelling the Stress-Strain Behaviour of a Soft Soil Improved with an Environmentally Friendly Binder
verfasst von : Manuela Corrêa-Silva, Mohamed Rouainia, Tiago Miranda, Nuno Cristelo
Erschienen in: Challenges and Innovations in Geomechanics
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Abstract
The paper focuses on the numerical prediction of the stress-strain behaviour under triaxial compression of a sandy clay soil improved with an environmentally friendly binder at the short-term (28 days) and long-term (90 days) using a kinematic hardening constitutive model. The binder was synthesised by ground granulated blast furnace slag (GGBS), an industrial by-product (IBP) of the steel industry, and sodium hydroxide (NaOH). The model, which is being used to reproduce artificially cemented soil behaviour for the first time, was able to successfully capture the smooth elastic-plastic transition response in the unimproved soil, while a ductile response observed in the improved soil prior to a fragile post-peak and residual states was also well predicted by the model.