Interlock & Confinement / Rib profile

Interlock and Confinement
In a Tensar mechanically stabilised layer, aggregate particles interlock physically within the geogrid and are confined within the apertures, creating an enhanced composite material with improved performance characteristics.

The structural properties of the mechanically stabilised layer are influenced by the magnitude and depth of the confined zones.

Proving the importance of rib profile
Compared with Tensar biaxial geogrid, TriAx geogrid has a more efficient rib profile. Trafficking tests and analytical modelling were undertaken to investigate the influence of rib profile on performance. The results were conclusive in confirming the importance of a combination of the depth and shape of the rib profile.

Deep profile ribs are more effective than a rounded profile. TriAx has been engineered to provide the most efficient use of material. The ribs have an optimised, high depth to width ratio and a rectangular slightly concave profile.