Effect of Sample Preparation on Saturated and Unsaturated Shear Strength of Cohesionless Soils

The geotechnical behavior of cohesionless soils is governed by field conditions. Such exist in two distinct forms, namely: disintegrated, such as fresh sediments under no overburden and/or suction, and intact, old deposits with suction. main contribution this research was the successful capture conditions laboratory samples, determination shear strength saturated dried states. Results indicated that disintegrated samples possess identical soil both saturation Shear stiffness peak increased increasing normal stress, clear failure peaks were observed, similar to loose soils. Both showed an initial contraction followed dilation at low stresses mostly high stresses. Apparent cohesion non-existent, friction angle measured 44.5° state 48° state. intact sample exhibited when saturated. Under state, residual dense Soil response primarily dilative largely contractive zero, 42° changed 91 kPa 36°, respectively, Finally, structural due suction between 0.05° 0.02°.