EN 1097-2:2010

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Apparatus
5 Determination of resistance to fragmentation by the Los
  Angeles test method
6 Determination of resistance to fragmentation by the impact
  test method
Annex A (normative) - Determination of the resistance to
        fragmentation of aggregates for railway ballast
Annex B (informative) - Alternative narrow range classifications
        for the Los Angeles test
Annex C (informative) - The impact tester: Construction, operation
        and safety requirements
Annex D (informative) - Checking of the impact tester
Annex E (informative) - Precision
Annex F (informative) - Worked example of calculation of impact
        value SZ
Annex G (informative) - Alternative narrow range classification for
        the Los Angeles test of 16/32 mm recycled aggregates
Bibliography

This European Standard describes the reference method, the Los Angeles test, used for type testing and in case of dispute (and an alternative method, the impact test) for determining the resistance to fragmentation of coarse aggregates and aggregates for railway ballast (Annex A). For other purposes, in particular factory production control, other methods may be used provided that an appropriate working relationship with the reference method has been established.This European Standard applies to natural, manufactured or recycled aggregates used in building and civil engineering.