Automatic Compactors

The automatic compactors easily compact and rotate the mold after each blow while keeping track of the number of hammer blows. The machine shuts off once a preset number of blows is reached. The start/stop function of the compactor is independent of the counter. The unit can be used to perform standard or modified compaction tests using a 5.5lb hammer with 12″ height of drop or a 10lb hammer with 18″ drop. Hammer lift compensates the height of the drop for soil thickness in the mold during compaction. The weight of the hammer is concentrated at the foot, allowing free fall of the hammer.  The optional safety cage provides protection from moving parts during compaction.  The unit is hinged to allow access to the mold and hammer.