Laboratory Miniature Vane Shear Test for Saturated Fine-Grained Clayey Soil


LABORATORY PROCEDURES USED: ASTM D4648 - Standard Test Method for Laboratory Miniature Vane Shear Test for Saturated Fine-Grained Clayey Soil

RESULTS GIVEN: Plot of undisturbed and remoulded shear strength (kPa) and maximum torque (N-m); rate of shear and time to failure.

REQUIRED SAMPLE SIZE FOR TESTING:
1.) Undisturbed and machine remoulded vane strength: Shelby tube sample.
2.) Hand remoulded (recompaction of disturbed sample) vane strength: 2000-2500 g of disturbed soil.

BACKGROUND INFO: Machine remoulded vane strength is obtained by rotating the vane rapidly through a minimum of five to ten revolutions on the failed undisturbed specimen, similar to remoulded field vane tests (ASTM D2573) and conducting a vane test 1 minute after the machine remoulding process. Please note, machine remoulded shear strength is typically higher than the hand remoulded shear strength.