1. ACI Committee 211. (1997)."Standard Practice for Selecting Proportions for Normal Heavyweight and Mass Concrete- ACI 211.1-91 (Reapproved 1997)". ACI Manual of Concrete Practice- 1999 Michigan 38 pp.
2. Advanced Cement Technologies. (2002)."High Reactivity Metakaolin HRM Engineered Mineral Admixture for Use with Portland Cement" http://www.sales@ metakaolin.com 1-7.
3. Ahmed H. K. (1980). Effect of Pozzolan on Cement and Concrete Resistance to Sulfate Attack and Hot Weather. MSc.Thesis University of Technology Iraq 115 pp.( in Arabic).
4. Al-Rawi R. S. (1985)." Internal Sulfate Attack in Concrete Related to Gypsum Content of Cement with Pozzolan Addition". ACI-Rilemm Symposium " Technology of Concrete when Pozzolans Slag and Chemical Admixtures are Used". 543-556 Monterrey N. L. Mexico.