Dr. Abdullah Zeyad Obtained on PhD degree from University Sains Malaysia (USM), Civil Engineering, in 2013. he Obtained on M.Sc. Structure. Eng. (2006), Sana’a University, Yemen and B.Sc. in Building and Construction. Eng. (1999), Building and Construction. Dept. University of Technology, Iraq and. Now he Assistant Professor of Structure Engineering, Concrete Technology, Science and Technology University, Sana’a, Yemen. He has published many research papers in the ISI journals and well-know international conferences. His main research interest includes Concrete Technology, Green Concrete andCement replacements.