Dr. Rafat Siddique is Senior Professor of Civil Engineering & Dean of Faculty Affairs at Thapar University, Patiala, India. He earned Ph.D. degree from Birla Institute of Technology & Science, Pilani, India, and did 22-months post-doctoral work at the University of Wisconsin-Milwaukee, USA. He has been Visiting Professor to University of Cergy Pontoise, France; INSA Rennes, France; University of Wolverhampton, U.K.; Consolis Technology, Finland; and BAM Berlin, Germany. He is the author of a book titled “Waste Materials & Byproducts in Concrete”, by SPRINGER. He has published more than 125 research papers in journals and conference proceedings. He is reviewer of 20 leading International Journals. Dr. Mohammad Iqbal Khan is Associate Professor in Structural Engineering, Department of Civil Engineering, King Saud University, Saudi Arabia. He is founding member and Managing Director of Center of Excellence for Concrete Research and Testing at King Saud University. He is formerly Lecturer of Structural Engineering, School of Civil Engineering, University of Nottingham, UK. He received his PhD degree from the University of Sheffield, UK in 1999. He is actively involved in research since 1990 and has published more than 70 research papers in refereed international journals and conferences proceedings. He is reviewer of five leading International Journals. He has one granted United States Patent and two pending United States Patents