Research Article
Two-Dimensional Parametric Study of an Embankment on Clay Improved by an Artificial Crust Composite Foundation
Table 1
Material properties of the embankment and subsoil.
| | Parameter | Soft clay | Firm clay | Embankment fill |
| | Thickness (m) | 17.7 | 2.2 | 4.5 | | Material model | MCC | MCC | MC | | Material type | Undrained | Undrained | Drained | | Unit weight (kN/m3) | 15.2 | 16.6 | 19 | | Saturated unit weight, (kN/m3) | 18 | 18 | 20 | | Coefficient of lateral Earth pressure, | 0.9 | 0.63 | — | | Void ratio, | 1.59 | 2.0 | — | | Slope of the isotropic normal compression line, | 0.4 | 0.121 | — | | Slope of the isotropic unload-reload line, | 0.053 | 0.011 | — | | Stress ratio, | 0.984 | 1.277 | — | | Effective friction angle, (degrees) | — | — | 30 | | Effective cohesion, (kPa) | — | — | 0.1 | | Poisson’s ratio, | 0.3 | 0.25 | 0.3 | | Dilatancy angle, Ψ | — | — | 2 | | Elastic modulus (MPa) | — | — | 20 | | Permeability (cm/day) | 9 × 10−4 | 8 × 10−3 | 1.0 |
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