MINIMIZATION OF REFLECTION CRACKING THROUGH THE USE OF GEOGRID AND BETTER COMPACTION

Results from finite element analyses and laboratory tests are presented which suggest that in the presence of construction induced cracks in new asphalt overlays, geogrid reinforcement will be ineffective in preventing reflective cracking. As is customary, the reinforcement layer was placed at the interface of the overlay and the existing pavement surface. However, when through improved compaction, by means of a newly developed compactor, called AMIR, construction induced cracks were minimized, the same reinforcement proved to be effective in controlling reflective cracking. (A) For the covering abstract see IRRD 857794.