geogrid

Stiff 2D geogrid and 3D geocells interlock with the aggregate particles and the reinforcement mechanism is one of confinement of the aggregate.

In the late 1970s, Netlon's founder, Dr Brian Mercer, invented and patented the Tensar stiff polymer geogrid, now used worldwide.

Burland, J,B (2009), Opening Address, Jubilee Symposium on Polymer Geogrid Reinforcement.

The latest development in stiff polymer geogrid manufacture is based on an isosceles triangular aperture, produced by a new manufacturing technique from a punched then stretched polymer sheet.

A needle punched nonwoven geotextile bonded to a geogrid provides in-plane drainage while the geogrid provides tensile reinforcement.

Whilst being isotropic the stiffness of the triangular style geogrid still remains less than traditional square style geogrids when the square geogrids are measured in multi axial directions.

Typically, woven and/or non-woven textile geosynthetics are used, however polyethylene or geomembrane layers or geogrid geotextiles materials have also been incorporated into the design or in place of a textile layer to increase strength.