Experimental Study of Mechanical Wave Propagation in Solidifying Cement-Based Composites

Experimental Study of Mechanical Wave Propagation in Solidifying Cement-Based Composites

WoS Article

In this paper, a new measurement procedure is presented as an experimental study. In this experimental study, a measurement system using the pass-through pulsed ultrasonic method was used. The pilot application of the measurement setup was to monitor mechanical wave changes during the solidification and hardening of fine-grained cement-based composites. The fine-grained composites had different water–cement ratios. The measured results show apparent differences in the recorded mechanical wave parameters. Significant differences were observed in the waveforms of the amplitude increase in the passing mechanical waves. At the same time, the frequency spectra of the five most dominant frequencies are presented, where the frequency lines are clear, indicating the quality of the hydration process. Based on the results, it can be concluded that the new method is usable for fine-grained cement-based materials but is not limited to that. The advantages of this method are its high variability and non-destructive character. The experimental study also outlines the possible future applications of the pulsed passage ultrasonic method.

In this paper, a new measurement procedure is presented as an experimental study. In this experimental study, a measurement system using the pass-through pulsed ultrasonic method was used. The pilot application of the measurement setup was to monitor mechanical wave changes during the solidification and hardening of fine-grained cement-based composites. The fine-grained composites had different water–cement ratios. The measured results show apparent differences in the recorded mechanical wave parameters. Significant differences were observed in the waveforms of the amplitude increase in the passing mechanical waves. At the same time, the frequency spectra of the five most dominant frequencies are presented, where the frequency lines are clear, indicating the quality of the hydration process. Based on the results, it can be concluded that the new method is usable for fine-grained cement-based materials but is not limited to that. The advantages of this method are its high variability and non-destructive character. The experimental study also outlines the possible future applications of the pulsed passage ultrasonic method.

non-destructive methods; pass-through pulsed ultrasonic method; mechanical waves; composite materials; solidification and hardening; cement;

non-destructive methods; pass-through pulsed ultrasonic method; mechanical waves; composite materials; solidification and hardening; cement;

JAKUBKA, L.; TOPOLÁŘ, L.; NEKORANCOVÁ, A.; DVOŘÁK, R.; HRABOVÁ, K.; ČERNÝ, F.; SKIBICKY, S.; PAZDERA, L.

2025

06.12.2024

MDPI

Switzerland

1996-1944

Materials

17

23

Swiss Confederation

1

18

18

https://www.mdpi.com/1996-1944/17/23/5971

http://hdl.handle.net/11012/251612

materials-17-05971