What is an Pacific GeoSource RoadGrid?
Pacific GeoSource RoadGrids are used to help retard reﬂective cracking in ﬂexible and composite pavements. These products derive their reinforcement beneﬁts from extremely stiff, ﬁber-glass strands which are coated with a polymer and then knitted together to form a grid structure. Adhesive material on the underside of the RoadGrid helps expedite installation and ensures a ﬁrm bond between the asphalt layers above and below.
How do Pacific GeoSource RoadGrids work?
When an overlay is placed over an existing cracked pavement, the cracks will eventually be reﬂected at the surface. The Pacific GeoSource System eﬀectively allows two components to form a composite material i.e. the tensile strength of the RoadGrid combines with the compressive strength of the asphalt. Cracks propagating upward are intercepted by the RoadGrid and prevented from immediately migrating further thus extending the life of the overlay (2 to 3 times) and increasing the period between major rehabilitation events.
- Conventional asphalts pavements
- Composite pavements
Delay appearance of reflective cracks in overlays due to:
- Badly cracked underlying pavement structure
- Concrete joints
- Transverse cracking
- Road widening
- Trenching activites