This part of PD 6682 gives guidance on the use of BS EN 13450 in the UK. BS EN 13450 specifies the properties of aggregates obtained by processing natural, manufactured or recycled materials for railway ballast.
NOTE Stoneblower aggregate, which is used to pack sleepers by being pneumatically blown under them, is not specified in BS EN 13450. Therefore, no guidance on specifying stoneblower aggregate in accordance with the requirements of BS EN 13450 is included in this guide.