1. Lecturer, Dept. of Civil Engineering, School of Engineering and Technology, Central Queensland Univ., Melbourne, VIC 3000, Australia.
2. Senior Lecturer, Faculty of Engineering and Informatics, Univ. of Bradford, Bradford, West Yorkshire BD7 1DP, U.K. (corresponding author).
3. Professor, Institute for Materials Research and Innovation, Univ. of Bolton, Deane Rd., Bolton BL3 5AB, U.K.