Technical White Paper Determining the Low-Temperature Rheological Properties of Asphalt Binder Using a Dynamic Shear Rheometer (DSR) Fundamental Properties of Asphalts and Modified Asphalts III Product: FP 08 March 2015 Prepared for Federal Highway Administration Contract No. DTFH61-07-D-00005 By Mike Farrar, Changping Sui, Steve Salmans, and Qian Qin Western Research Institute 3474 North 3rd Street Laramie, WY 82072 www.westernresearch.org