Tadele Assefa Aragaw is a lecturer in Chemistry and Environmental Engineering, a Researcher, and a Facility Manager in the Chemical and Food Engineering at the Bahir Dar Institute of Technology. Since 2017 he has been involved in a research project in the area of Ethiopian kaolin characterization for different industrial applications as well as an indigenous microalgae investigation from wastewater for biodiesel production. In 2012, Tadele received his B.S. in Chemistry from the University of Gondar. In 2014, he started studying for his master’s degree in Environmental Engineering while also teaching an Analytical Chemistry and Environmental Engineering course for Chemical Engineering students. He received his M.Sc. in Environmental Engineering in 2016 from the Bahir Dar Institute of Technology, Bahir Dar University. Tadele has published articles in the field of his profession, Environmental Engineering.

• Preface.- Acknowledgments.- Introduction.- Types of Cement.- Admixture and Characteristics of Cement.- The Chemical Analysis of Cement.- Author's Biography.