This British Standard, a part of the BS 812 series, describes a method for the determination of the aggregate abrasion value (AAV) which gives a measure of the resistance of aggregates to surface wear by abrasion.
The aggregate abrasion value is determined from the differences in mass of the specimens before and after abrasion.
The method described in this revision of the standard has not been changed technically from the previous edition. The only major change is that the test sand is not longer allowed to be re-used. This British Standard draws attention to the dust hazard that can arise during the course of the test.