Appendix C 4 Geotextile Reinforced Seal (GRS)
A two-lane, two-way rural highway is to be resealed.
A 14/7 double/double initial seal was placed 8 years ago. The seal has significant block cracking in the traffic lanes, where shrinkage cracks from the cementitious stabilised base have reflected through.
A geotextile reinforced seal will be placed in the traffic lanes, utilising a double/double seal over the geotextile layer. The shoulders will be sealed with a 7 mm single/single seal and will not utilise a geotextile.