Earthmate Basegrid™ PP Bi-axial Geogrids are square meshes of polypropylene (PP) and widely used as subsoil reinforcement. Their prominent characteristic is excellent mechanical properties under intermittent high loading. As granular materials are compacted into the apertures of the Geogrids an interlocking effect is achieved. The stiffness of Geogrids allows for load at low strain. Ultimately highway design relies more on economic solutions which Earthmate Basegrid™ PP Bi-axial Geogrids provide, allowing an estimated 40% reduction in granular materials with no less of performance. A high level of resistance to UV light is given to Earthmate Basegrid™ PP Bi-axial Geogrids by the incorporation of ≥ 2% of weathering grade carbon black, well dispersed in the polymer matrix.