STANDARDS: BS 1377:2,ASTM D4318, AASHTO T89
Used to evaluate the relationship between the moisture percentage of a soil sample and the number of blows required to close a groove made into the soil; and therefore to determine when a clay soil changes from a plastic to a liquid state.
The device is available in two models:
• Hand operated,
• Motor operated at 120 drops/min speed, ensuring better uniformity and accuracy.
Comprises a removable brass cup, adjustable crank and cam mechanism, blow counter and base.
Supplied with Metal grooving tool.