1. Some engineering properties of slag concrete as influence by mix proportioning and curing;Swamy;ACI Mater J,1990
2. ASTM C 597. Standard test method for pulse velocity through concrete, ASTM standards, USA; 2002.
3. Guide book on non-destructive testing of concrete structures. In: Training course series no. 17, International atomic energy agency, Vienna; 2002.
4. Compressive strength and ultrasonic pulse velocity relationship for concrete in columns;Kaplan;ACI J,1958
5. Correlation between ultrasonic pulse velocity and strength of concrete;Rajagopalan;Indian Concr J,1973