Laboratory Shear Strength Of Dilative Soils PDF Download

Direct measurements of shear and normal stresses were made, the compatibility of the resulting shear stress distribution and the corresponding normal stress pattern was studied, and the experimental findings were correlated with the existing theories for biaxial systems. A miniaturized shear cell was employed and the results of measurements in situ with this shear cell are compared with those of pressure cells. Vibratory (sinusoidal) loads were generated by a mechanical oscillator on the soil surface and transmitted to both types of cells buried beneath the oscillator. A predominantly homogeneous and noncohesive soil (dry beach sand) was used, so that the theory for biaxial stress distribution could be applied as a first approximation in the analysis. The standard deviation of the experimentally obtained shear stress vectors from values computed for a biaxial system did not exceed 4.75%, and for normal stresses it did not exceed 5.22%. (Author).