Determining young modulus of concrete with ultrasonic wave velocity measurement

Non-destructive testing (NDT) method is very important due to not damage the material. Ultrasound pulse velocity (UPV) testing is one of the most chosen method for the NDT to measure the mechanical properties of the material. In this study elasticity modulus of concrete was investigated by UPV testing method. The passage time measurement of ultrasound wave at microsecond (µs) level through the bulk of material were made by ultrasound time measurement device (called as PASSO with two transducers working at 55 kHz). After UPV measurement, compression test was carried out for the same specimens. Experimental elasticity modulus was obtained from the slope of the linear part of stress ()-strain ()graph of compression test. A few models was developed by correlation of UPV and experimental elasticity modulus values. Performance of our models were tested and compared with other models via using data from different researchers. It was seen that our models found to give reasonable results in comparison with other models. Keywords: Elasticity modulus, compressive strength, concrete, ultrasound, pulse velocity, wave motion.