Estimation of mechanical and durability properties of self-compacting concrete with fibers using ultrasonic pulse velocity

In this research, the performance of ultrasonic pulse velocity (UPV) in concrete is examined as a nondestructive experiment in order to estimate mechanical (compressive and tensile strength) and durability (water absorption) properties of fiber-reinforced self-compacted concrete For this purpose 11 mixture designs containing 3 types of fibers (steel: 0.1, 0.2, 0.3 and 0.4 percent by volume, Poly-phenylene Sulfide(PPS): 0.1, 0.2, 0.3 and 0.4% by volume and poly-propylene: 0.1 and 0.2 percent by volume) and design without fibers as reference concrete have been tested and compared. Cube specimens were tested in order to determining ultrasonic pulse velocity. According to the results, correlation relations were established between UPV in the specimens and the compressive and tensile strength and water absorption. The range of the velocity of the waves was also determined for this kind of concrete. The proposed relations can accuracy estimate the mechanical and durability properties of this kind of concrete.