Secugrid® geogrids are reinforcing geosynthetic products manufactured from high tensile strength extruded monolithic flat polymer bars with high strength welded junctions. Secugrid® absorbs tensile forces induced into the soil and distributes the stresses through the high tensile strength bars. This transfer of forces takes place by two distinct modes: interlock of the granular soil into the grid apertures which physically restrains movement of the granular base course material and frictional force transfer between the soil and the wide flat bars of Secugrid®.
By absorbing the tensile forces induced by traffic loading on the road surface, the loading is distributed over a larger base area, minimizing localised pressures on the subsoil. An important feature of Secugrid® geogrids is the very high modulus (i.e. they are able to function at their design tensile loading at very low elongation). The high modulus minimises the deformation that can occur at the road surface. Secugrid® also has a very low susceptibility to long-term creep, ensuring the continued integrity of the road surface against deformation.
Soil reinforcement with Secugrid® can eliminate the need to remove and replace or chemically stabilise subsoils that do not have sufficient bearing capacity for the intended loading (ask for the Secugrid® calculation tool).
Combigrid® (a bonded composite of Secugrid® and Secutex® geotextiles) can be used if the geosynthetic product is required to provide reinforcement functions as well as separation-filter stability between cover layer and subsoil. The Secugrid® component of the composite provides reinforcement while the Secutex® nonwoven geotextile component provides separation and filter stability.