Monitoring the fracture process of concrete during splitting using integrated ultrasonic coda wave interferometry, digital image correlation and X-ray micro-computed tomography

The paper deals with the continuous-time monitoring of mechanical degradation in concrete cubes under splitting. A series of experiments performed with integrated coda wave interferometry (CWI) and digital image correlation (DIC), supported with X-ray micro-computed tomography (micro-CT) is reported. DIC and micro-CT techniques were used to characterize the fracture process in detail. CWI method was proved to be effective in the assessment of damage level based on the changes in decorrelation between coda wave signals. The possibility of early detection of damage using CWI is promising for possible applications in the diagnostics of concrete elements.

Automated summary

The paper presents a study on the continuous-time monitoring of mechanical degradation in concrete cubes during splitting, using integrated coda wave interferometry (CWI), digital image correlation (DIC), and X-ray micro-computed tomography (micro-CT). DIC and micro-CT techniques were employed to analyze the fracture process, while CWI method showed promise in assessing damage level based on changes in decorrelation between coda wave signals. This research has potential applications in early detection of concrete element damage.