Experimental Research on Ultrasonic Strength Detecting in Steel Fiber Concrete with Fly Ash and Slag

The steel fiber concrete with fly ash and slag of different ages by ultrasonic detection and compression strength were tested. The relationship between ultrasonic velocity and compression strength was set up by regression analysis of the testing data. The sample showed that using the ultrasonic velocity of this wave could forecast the compression strength of steel fiber concrete, and it could be used in steel fiber concrete quality evaluation simply and practically.