An Empirical Relationship between Compressive Strength and Ultrasonic Pulse Velocity for Concrete

Abstract

This work represents an effort to set empirical formulas in order to correlate the relationship between ultrasonic pulse velocity (UPV) and compressive strength (fcu) under the circumstance of locally casting concrete with adequate precision; taking into consideration the influence of mixing ratio of aggregates used. The investigational work involves casting concrete cubes laboratory with special mix quantities of concrete mixing materials. Three tests conceded on the casting cubes models have been Ultrasonic pulse, compressive, and total density test. The gained data have been evaluated by the SPSS program, from which an empirical formula for each special mix quantities has been obtained. The fit regression curves are compared to curves generated by other researchers; the evaluation indicated a high degree of matching. The result shows that there is a facility in developing a general relation between fcu and UPV by making compressive and pulse velocity tests on concrete cubes with an aggregate/cement ratio equal to five. The relation can be utilized to calculate fcu with any estimation of the aggregate/cement ratio.