RN47 Widening, Lens, France - Case Study

Key Skills
  • Independent
  • Lime & cement stabilisation
  • In-situ and ex-situ recycling
  • Roller compacted concrete
  • Industrial by-products
  • Hydraulic binders inc. slag
  • Pozzolans & Fly Ash
  • Pavement design
  • European standards
  • Binders for erosion control
  • Training & presentations


2012 Expert opinion on pavement expansion on major trunk road

2012 Revision of European standard, EN14227, for hydraulically bound mixtures and hydraulically treated soils. European Technical committee TC227/WG4 and UK mirror BSi committee B/510/4

2012 Steelwork Access Road Phase 2, Llanwern. Pavement advice during construction

2012 Defence Infrastructure Organisation (DIO). Member of ad-hoc committee for Specification 52 Hydraulically bound mixtures for Airfields

Hydraulically Bound Mixtures

RN47 Widening, Lens, France - Case Study

Location: RN47 Widening, Lens, France
Highways Authority
Technical Data:
Traffic 80msa on chalk/clay subgrade
40mm porous asphalt wearing course on
70mm bituminous binder course on
220mm GFA base (85% BURNT colliery spoil + 13% pfa + 2% lime) on
280mm LFA sub-base (91% fly ash / 4% lime / 5% gypsum) on
400/500mm UNBURNT colliery shale capping