BS 812-112: 1990 : Testing aggregates — Part 112. Method for determination of aggregate impact value (AIV)
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This Part of BS 812 describes methods for the determination of the aggregate impact value (AIV) which gives a relative measure of the resistance of an aggregate to sudden shock or impact.
Two procedures are described, one in which the aggregate is tested in a dry condition, and the other in a soaked condition.
The methods are applicable to aggregates passing at 14.0 mm test sieve and retained on a 10.0 mm test sieve. For smaller size fractions, a recommended method is described in appendix A. Aggregate sizes larger than 14 mm are not appropriate to the aggregate impact value test.