In situ damage evaluation of geogrid used in asphalt concrete pavement

International audience; In this paper we present the first results of the national French project SolDuGri dealing with pavement reinforcement by geogrids. In this project, full scale tests have been performed to evaluate the in situ damage of geogrids in asphalt concrete pavements. The tests consisted in building test sections with four different types of geogrids, and two different compacted asphalt concrete layers above. After construction, the geogrids have been recovered from different locations on the field sections, where they had been subjected to compaction only, or also to construction traffic, and their residual mechanical properties have been evaluated in the laboratory.