Blar i Norwegian Geotechnical Institute (NGI) Digital Archive på forfatter "Aas, Gunnar"

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    • K0 as a Function of Changes in Stress and Strain Conditions during Consolidation, Unloading and Reloading 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      There are several examples in the literature that describe empirical correlations for the coefficient of earth pressure at rest, K0, and undrained shear strength, su, in normally consolidated and overconsolidated clays as ...

    • NGI Publication 209 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Others, 2022)

    • Shear Strength of Soft Clay in Terms of Effective Stresses 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      It is commonly understood and accepted today that soft, contractant soils, when sheared under undrained conditions, develop high pore pressures that result in failure at a critical shear stress, occurring before the soil ...

    • Stability of Natural Slopes in Quick Clay 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      Norway and Sweden have been subjected to landslides for several centuries, with some of the largest landslides involving a large block sliding out as a continuous flake on a deposit of soft quick clay. Attempts to calculate ...

    • Undrained Shear Strength of Overconsolidated Clay 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      It has been known for a long time now that in soft and sensitive clays undrained failure occurs apparently before the full friction angle has been mobilized. The main object of this paper is to clarify the importance of ...

    • Vane Shear Strength in Terms of Effective Stresses 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      Experience with the shear strength determined with the field vane has shown that the measured values of the strength, normalized with the effective overburden stress, suv/σ'vo, are often lower than 0.1 for normally ...

    • Yield Stresses in Soft Contracting Clays 

      Aas, Gunnar; Lacasse, Suzanne (NGI Publication;209, Chapter, 2022)
      The undrained shear strength su along an arbitrary failure plane can be expressed as: su = 1/2(σ'ULS − σ'LLS) (1) where σ'ULS and σ'LLS denote the upper (U) and lower (L) effective, normal, compressive failure stresses ...