BS 812
For Testing Aggregates for Resistance to Abrasion.
Specification :
It consists of a disc rotating about a shaft connected to
a reduction gear box coupled to a motor. The disc rotates at 28-30
RPM. Under the rotating disc is a tray with an outlet to facilitate the
removal of sand. Two Conical Hoppers are mounted on a bracket
fixed to the circular tray. An arrangement is made for start and stop
the flow of sand. Two containers with weights are supplied to keep
the specimens pressed against the rotating disc. Suitable for
operation on 220 V, 50 cycles, A.C. Supply.