Predicting the mechanical behaviour of a sandy clay stabilised with an alkali-activated binder

There is a growing interest in the geomechanical behaviour of low performing soils strengthened with alkali-activated materials, which have been promoted as low-carbon-footprint binders. This paper focuses on performance sandy clay stabilised NaOH-activated blast furnace slag after short (28 days) and long (90 curing periods. Triaxial compression experiments were conducted at range mean effective stresses (41 to 600 kPa) overconsolidation ratios (1 12.2). The experimental data was used calibrate kinematic hardening constitutive model ability capture artificially investigated. results carried out soil both periods showed resembling that observed for cement-mixed clays. model, had never tested soils, successfully predicted smooth elastoplastic transition non-stabilised specimens peak/residual shear strains strain-softening peak strengths its state 28 90 days.