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Dynamic analysis and online monitoring of concrete curing processes using acoustic emission (AE) and nonlinear elastic wave spectroscopy (NEWS)
In order to evaluate the microstuctural properties of freshly poured concrete during curing, a laboratory scale combination of the Acoustic Emission (AE) Technique with Nonlinear Elastic Wave Spectroscopy (NEWS) has been implemented. The first technique is capable of online monitoring the internal microstructural activity. The second technique is used to probe the nonlinear elastic properties of the microstructure (which gives information about the micromechanical behaviour) through the analyses of the harmonic generation from a continuous wave transmission through the concrete sample. In addition, temperature and P and S wave speeds (providing properties such as Young's Modulus of Elasticity and Poisson's Ratio) are measured during the curing process at regular time intervals. The evolution in the AE events, and in the linear and nonlinear ultrasonic behavior of concrete is analyzed as a function of the degree of hydration for various initial compositions during the first three days of the curing process. The results show a good correlation between the phase changes in the concrete due to chemical reactions seen in the temperature profile, and the linear and nonlinear acoustic properties.
Dynamic analysis and online monitoring of concrete curing processes using acoustic emission (AE) and nonlinear elastic wave spectroscopy (NEWS)
In order to evaluate the microstuctural properties of freshly poured concrete during curing, a laboratory scale combination of the Acoustic Emission (AE) Technique with Nonlinear Elastic Wave Spectroscopy (NEWS) has been implemented. The first technique is capable of online monitoring the internal microstructural activity. The second technique is used to probe the nonlinear elastic properties of the microstructure (which gives information about the micromechanical behaviour) through the analyses of the harmonic generation from a continuous wave transmission through the concrete sample. In addition, temperature and P and S wave speeds (providing properties such as Young's Modulus of Elasticity and Poisson's Ratio) are measured during the curing process at regular time intervals. The evolution in the AE events, and in the linear and nonlinear ultrasonic behavior of concrete is analyzed as a function of the degree of hydration for various initial compositions during the first three days of the curing process. The results show a good correlation between the phase changes in the concrete due to chemical reactions seen in the temperature profile, and the linear and nonlinear acoustic properties.
Dynamic analysis and online monitoring of concrete curing processes using acoustic emission (AE) and nonlinear elastic wave spectroscopy (NEWS)
Dynamische Analyse und Online-Überwachung des Betonaushärtungsprozesses mit Hilfe der Schallemissionsprüfung und der Spektroskopie der nichtlinearen elastischen Welle
Desadeleer, Wendy (author) / Abeele, Koen Van Den (author) / Wevers, Martine (author)
2005
8 Seiten, 8 Bilder, 1 Tabelle, 13 Quellen
Conference paper
Storage medium
English
Fresh Concrete Curing Monitoring Using Acoustic Emission
| Springer Verlag | 2023
| British Library Online Contents | 2000