AGGREGATE BASE COURSE MATERIAL TESTING AND RUTTING MODEL DEVELOPMENT NCDOT Project 2013‐18 FHWA/NC/2013‐18 December 2014 Liang Chern Chow Debakanta Mishra, Ph.D. Erol Tutumluer, Ph.D. Department of Civil and Environmental Engineering University of Illinois at Urbana‐Champaign