The Aggregate Impact Value Testing Apparatus, meets with BS 812, it is robustly designed 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. This characteristic is measured by impact value test. The aggregate impact value gives a relative measure of the resistance of an. Procedure of Aggregate Impact value test · Sieve the material through 12. Determination of Aggregate Impact Value.