Performance of multi-axial geogrid stabilised flexible pavements

Full-scale test sections were constructed and trafficked at the U.S. Army Engineer Research and Development Center (ERDC) to provide performance data for comparing the effectiveness of multi-axial geogrid stabilised flexible pavement sections with an unstabilised flexible pavement section. Two test sections containing differing multi-axial geogrids were constructed and trafficked under shelter in ERDC's hangar 2 pavement test facility. The test sections were subjected to accelerated traffic loading using a dual-wheel tandem-axle configuration simulating typical highway loadings. Permanent surface deformation, rutting, pavement stiffness and instrumentation response data were collected at designated traffic intervals. The results of the study indicate that the geogrid stabilised sections improved the performance of the pavement section when compared with the unstabilised section.