Abstract
This paper presents a study on the use of polymer geogrids in reinforcement of loose sand materials. A small-scale laboratory model was constructed in order to investigate the stress strain behaviour of a geogrid-reinforced section in relation to non-reinforced section. The results obtained confirmed that at a given settlement value the resistance to penetration of a geogrid reinforced section could be double the non-reinforced section. Gravel influence on the resistance to penetration is also discussed. This improvement can be utilized to obtain better subgrades in areas involving low CBR values. Parameters of local consideration associated with the design of a polymer geogrid section in arid areas are discussed.