Aggregate Crushing Value

The AIV apparatus consists of a hammer with a trip action release, mould and automatic blow counter. All this is contained within a rigid frame to ensure free-fall of the hammer when released.
To determine the Aggregate Impact Value (AIV) of aggregates which provides a relative measure of the resistance of an aggregate to sudden shock or impact.
The counter fitted to the machine automatically records the number of blows delivered to the sample. The apparatus is manufactured from heavy duty plated steel to resist corrosion.
Supplied complete with a 75mm diameter measuring cylinder, and a 16mm diameter steel tamping rod which is 600mm long.
Standard: BS812:110
Dimensions: 450mm x 350mm x 850mm
Weight: approx. 52kg