Proceedings of sessions at the Third National Conference of the Geo-Institute, held in Urbana-Champaign, Illinois, June 13-17, 1999. Sponsored by the Pavements Committee of the Geo-Institute.

This Geotechnical Special Publication contains five papers focusing on field and laboratory characterization of transportation geo-materials. Characterization makes use of various nondestructive testing techniques (falling weight deflecometer, spectral analysis of surface waves, ground penetrating radar, seismic pavement analyzer, Humbold stiffness gauge) and cone penetration testing for field...