Folagbade, S. O. (2017). Initial Surface Absorption of Cement Combination Concretes Containing Portland Cement, Fly Ash, Silica Fume and Metakaolin. International Journal of Sustainable Construction Engineering and Technology, 8(2), 46-56. Retrieved from https://publisher.uthm.edu.my/ojs/index.php/IJSCET/article/view/1495