GALLERY 6

Lens, Northern France
Location: RN47 Widening, Lens, France
Date: 1998
Client: Highways Authority
Technical Data: Traffic 80msa on chalk/clay subgrade
40mm porous asphalt wearing course on
70mm bituminous binder course on
220mm FABM 2 base (85% BURNT colliery spoil + 13% pfa + 2% lime) on
280mm FABM 5 sub-base (91% fly ash / 4% lime / 5% gypsum) on
400/500mm UNBURNT colliery shale capping