1. Graduate Research Assistant, Dept. of Civil Engineering, Lakehead Univ., Thunder Bay, ON, Canada P7B 5E1.
2. Associate Professor, Dept. of Civil Engineering, Lakehead Univ., Thunder Bay, ON, Canada P7B 5E1 (corresponding author).
3. Lead Asset Management Engineer, Provincial Highways Management, Ministry of Transportation of Ontario, Thunder Bay, ON, Canada P7E 6P6.
4. Senior Bituminous Engineer, Materials Engineering and Research Office, Ministry of Transportation of Ontario, Toronto, ON, Canada M3M 0B6.