FINAL REPORT SELECTION AND EVALUATION OF PERFORMANCE-GRADED ASPHALT BINDERS FOR VIRGINIA B. D. Prowell Senior Research Scientist (The opinions, findings, and conclusions expressed in this report are those of the author and not necessarily those of the sponsoring agency.) Virginia Transportation Research Council (A Cooperative Organization Sponsored Jointly by the Virginia Department of Transportation and the University of Virginia) Charlottesville, Virginia June 1999 VTRC 99-R21