1. Soilcon Geotechnical Engineering Laboratories, Multan Rd., Divine Gardens, Lahore 54792, Pakistan
2. Department of Transportation Engineering and Management, University of Engineering and Technology, Grand Trunk Rd., Lahore 54890, Pakistan (Corresponding author), e-mail: ammadhk@hotmail.com, https://orcid.org/0000-0003-0767-3032