This test method is a variation of the simple slump test and subjects the concrete to vibration after removal from the slump cone. The time taken for the concrete to be recompacted is taken as a measure of workability.
STANDARD
TECHNICAL PARAMETERS
Amplitude(with empty container): 0.5mm
Vibrating frequency: 0.5Hz
Counter weight when VB Test: 2750g±20g
Slump cone size: (Top Dia. x Bottom Dia. x Height)100x200x300mm
Power: 380 V, 50Hz, 250 W
Net weight: 30kg