1 Scope
This European Standard specifies a basic procedure for the petrographic examination
of aggregates for the purposes of general classification. The procedure is not suitable
for the detailed petrographical study of aggregates for specific end uses.
NOTE The examination should be carried out by a qualified geologist (petrographer), with experience of materials used in civil engineering.
This European Standard covers only natural aggregates, sand and gravel or crushed
rock aggregate as well as their source materials.