1. 2A. Petzold, and M. Rohrs , Concrete for High Temperature; pp.115 40 . MacLean and Sons, London, 1970 .
2. 3F. Gonzalez-Aleu , "Studies in Phosphate Bonding " Ph.D. Thesis. Pennsylvania State University, University Park, PA, 1980 .
3. 4F. M. Lee , The Chemistry of Cement and Concrete; pp.47 60 . Chemical Publishing Co., New York, 1971 .