1. Beaudin J J and Ramachandra V S 1975Chem. Concer. Res. 5 617
2. Beaudin J J, Ramachandra V S and Feldmand R F 1977Am. Ceram. Soc. Bull. 424
3. Chandrawat M P S, Yadav R N and Mathur Ritu 1994Res. & Ind. 39 18
4. Gupta B L 1976Concrete technology (New Delhi: Delhi Standard Publisher) p. 18
5. Gupta Y K, Chandrawat M P S and Yadav R N 1990Res. & Ind. 35 191