Geomechanics 1: Week 5
Soil Shear Strength
The ability to resist sliding along internal surfaces within a soil mass is known as soil shear
strength
Amontons’ law of sliding friction
Internal friction angle
Obliquity (a) and Friction (f) angles]
, Sliding friction angle and angle of repose (f)
How do we determine , Friction
Field tests—SPT
Hammering - Standard Penetration Test (64 kg), Dynamic cone (9kg) -pavements.
Do you remember that for given N (SPT value), we calculate Friction angle?
Direct Shear Test
Shear Box Schematic
Soil Shear Strength
The ability to resist sliding along internal surfaces within a soil mass is known as soil shear
strength
Amontons’ law of sliding friction
Internal friction angle
Obliquity (a) and Friction (f) angles]
, Sliding friction angle and angle of repose (f)
How do we determine , Friction
Field tests—SPT
Hammering - Standard Penetration Test (64 kg), Dynamic cone (9kg) -pavements.
Do you remember that for given N (SPT value), we calculate Friction angle?
Direct Shear Test
Shear Box Schematic
