Effect of High Elevated Temperatures on the Compressive Strength and Ultrasonic Pulse Velocity of High Strength Concrete. J. eng. sustain. dev. [Internet]. 2007 Mar. 1 [cited 2024 May 15];11(1):58-69. Available from: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1702