PD 6682-8:2004

PD 6682-8:2004 provides guidance on the use of BS EN 13450 in the UK. BS EN 13450 specifies requirements for aggregates for railway ballast that necessitated the reissue of Network Rail’s specification for track ballast and stoneblower aggregate.

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.

UK specifications relating to aggregates for railway ballast, notably the STBSA [1], have specified requirements for the following aggregate properties:

• dimensions (grading)
• flakiness
• elongation
• aggregate crushing value
• wet attrition value.