Reinforcement geogrid COMBIGRID®

protectionfor foundationfor roads

Combigrid® is a composite of a laid geogrid made of stretched, monolithic flat bars with welded junctions and a mechanically bonded and calendered filter geotextile welded within the geogrid structure. Combigrid® is used for stabilisation and reinforcement of soils in many fields of infrastructure, environmental protection, and hydraulic engineering applications. Unpaved low volume roads are extensively used for either temporary or permanent transportation purposes, such as haul roads, access roads or rural roads. Combigrid® is used at the interface between soft subgrade and subbase course to improve the bearing capacity and prevent migration of fines from the subgrade into the coarse aggregate layer. Reduced surface deformation (less rutting) Reduced base course thickness (vs. unreinforced sections) Reduced maintenance cycles Extended service life In paved roads or storage yard applications, Combigrid® is either used at the interface between soft subgrade and subbase or within the base or subbase course layer itself. This enables contractors to meet minimum compaction requirements and to reach the required bearing capacity for the overlying aggregate layers. Reduced surface deformation (less cracks) Reduced base course thickness (vs. unreinforced sections) Reduced maintenance cycles Extended service-life If the railway track is not capable to absorb the stresses from the railway traffic without causing detrimental deformations, maintenance or rehabilitation of the track is required. The geogrid component of Combigrid® reduces movement and particle reorientation within the sub-ballast and ballast layers.