Hekmat Hameed, D. “Effect of Reactive Metakaolin Prepaird by Thermal Shock on Some Mechnical Properties of Self-Compacting Concrete ”. Journal of University of Babylon for Engineering Sciences, Vol. 27, no. 2, July 2019, pp. 287 -99, https://journalofbabylon.com/index.php/JUBES/article/view/2403.