1. Assistant Professor, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong (corresponding author).
2. Ph.D. Student, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong.
3. Research Assistant, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong.
4. Ph.D. Candidate, Dept. of Civil and Environmental Engineering, Hong Kong Polytechnic Univ., Hong Kong.
5. Research Scientist, State Key Lab of Heavy Oil Processing, China Univ. of Petroleum, Qingdao, Shandong 257061, China.