Selected Laboratory Research on Geogrid Impact on Stabilization of Unbound Aggregate Layer

The influence of geogrid on aggregate layer has been tested by number of research organizations across the globe since early 80-ties of XX century. Test were carried out in laboratories and in field. The paper discuss selected laboratory tests important for stabilization function as well as describes recent laboratory research influence of geogrid for stabilization of aggregate layer in pavement. Laboratory part of the research was focused on interaction between grid and aggregate. Part of model tests carried out in box include calibration of measurement unit for future test in real trafficked pavement.