All non-destructive testing methods in civil engineering for fresh concrete are of special interest because they allow predictions to be made about the concrete's properties prior to its placement. That is why the special attention is devoted to such types of the testing method. The Determination of Elastic Properties of Fresh Special Concrete Using Ultrasonic Shear Waves Ultrasonic waves have been used successfully for the determination of the mechanical properties of hardened cement paste and concrete. For this purpose researchers are measuring the ultrasonic shear wave reflections from the upper layer of the hardening cement paste using the buffer rod. The modulus of elasticity and viscosity are determined as a rate between the first and second reflected waves. For measuring of the cement mortar hydration kinetics there has been constructed the measuring setup, which was improved to achieve the more accurate results. The greatest importance is given to the appropriate measuring chamber were the cement gel sample should be inserted, for the ultrasound testing measurements. The interaction between the cement gel and the ultrasonic waves, together with application of the measuring standards, could be used to obtain information on the quality of the cement mortar hydration kinetics measuring process. Besides, usage of the measuring standards enables the earlier determination of the sample properties, because the data on the hydration acceleration is available. There are also described the advantages of the demodulated-reflection-signal spectrum analysis and the spectrum analysis of the high-frequency-signal on the demodulator input.