In this paper, we present the assessment of ultrasonic parameters of signals backscattered by mortar using the Principal Component Method. The measurement has been performed by the ultrasonic reflection technique using a transducer with a central frequency 0.5 MHz. The samples examined consist of specimen mortar mixtures prepared with ratio cement/sand (c/s = 0.5) and water/cement (w/c = 0.65) and studied at three temperatures 25 °C, 32 °C and 42 °C. The projection of the data showed that more than 93% of the information is retained and presented in 2D space. The correlation between Acoustic Impedance and Ultrasonic Velocity at 25 °C, 32 °C and 42 °C are 96.95%, 99.98%, and 99.98% respectively. The data are associated with the research article "Ultrasonic Characterization and Hardening of Mortar Using the Reflection Technique" (H.LOTFI and al.).
Keywords: Mortar; Non Destructive Testing; Principal component analysis (PCA); Ultrasonic velocity.
© 2021 The Authors. Published by Elsevier Inc.