Contamination of the road foundation by underlying subsoil material reduces the load bearing capacity and/or drainage characteristics of the granular fill material.
Bontec® SG woven and NW nonwoven geotextiles offer an effective solution to this problem through the provision of a bespoke separation layer. Bontec® offers high mechanical performance per unit weight and so maximize their resistance to installation damage and ensure a long term in-situ performance.
As road foundation materials continue to get increasingly expensive, then the judicious use of an appropriate geotextile can often reduce foundation design thicknesses by a substantial margin. Rutting depth is limited by the geotextile reinforcement, which acts both as a ‘sounding board’ during fill compaction, and as a highly effective separation layer. This use of typically SG Heavyweight geotextiles, can produce significant savings in foundation material costs.