Least count of deformation dial gauge (mm/div.) =
Proving ring constant (kg/div.) =
Soil Specimen No. =
Type of specimen: Undisturbed/Remoulded
Initial length of specimen, L0 (mm) =
Initial diameter of specimen, D0 (mm) =
Initial area of specimen, A0 (cm2) =
Elapsed time |
Vertical deformation  |
Vertical strain |
Corrected area |
Compressive load |
Compressive stress |
||
(div.) |
(mm) |
(div.) |
(kg) |
||||
(1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) = (7)/(6) |
1. Convert the dial readings to the appropriate vertical deformation and compressive load units by multiplying with respective least counts.
2. Calculate vertical strain, corrected cross-sectional area and then compressive stress.
3. Plot stress-strain curve, and show unconfined compressive strength qu as the peak stress or the stress at 20% strain.
4. Draw a Mohr circle using qu, and determine undrained shear strength su = undrained cohesion cu = qu/2
5. Compute the water content, w (%).
Results
Water content (%) =
Unconfined compressive strength (kg/cm2) =
Undrained shear strength (kg/cm2) =