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360 UNCOATED CHIPPINGS FOR SURFACE TREATMENT
• Chippings: Clean aggregate to BS EN 13043 and PD 6682-2, size 2.8/6.3, grading
category Gc85/15.
- Type/ Source: Submit proposals.
- Colour: site specific.
• Binder:
- Cutback bitumen to BS EN 12591 or bitumen emulsion to BS 434-1.
- Do not use cut-back bitumen at temperatures below 15°C.
- Do not use modified binders without prior approval.
- Application:
- Binder application rate: In accordance with TRL Road Note 39. Adjust rate for
modified binders in accordance with manufacturer's instructions.
- Coverage: 100–105% shoulder to shoulder to BS 598-108.
- Compaction: Roll. Do not crush chippings.
• Completion:
- Before trafficking, remove excess chippings.
Carry out further removal of loose chippings disturbed by traffic as necessary.

RotF generic (intermediate) NBS 2014 6118-AEW-XX-XX-NBS-A-01