1. Scientist, Geotechnical Engineering Group, CSIR-Central Building Research Institute, Roorkee 247667, India (corresponding author).
2. Senior Research Fellow, CSIR-Central Building Research Institute, Roorkee 247667, India.
3. Lecturer, School of Civil & Environmental Engineering Centre for Built Infrastructure Research (CBIR), Faculty of Engineering and Information Technology, Univ. of Technology, Sydney NSW 2007, Australia.