Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer
It is an important issue to ensure the long-term reliable service of the reinforced concrete structures by developing effective online monitoring techniques. In this paper, three different accelerated corrosion experiments were conducted by using the electrochemical method, and the ultrasonic pitch-...
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doaj-59598865e23f42a981c27e543269671e2020-11-25T03:46:45ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019335113519Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducerPeng Liu0Yan Hu1Bo Geng2Dongyu Xu3School of Civil Engineering, Central South University, Changsha, Hunan 410075, ChinaSchool of Civil Engineering, Central South University, Changsha, Hunan 410075, China; Corresponding author.Shandong Provincial Key Laboratory of Construction Materials Preparation and Measurement, University of Jinan, Jinan, Shandong 250022, ChinaShandong Provincial Key Laboratory of Construction Materials Preparation and Measurement, University of Jinan, Jinan, Shandong 250022, China; Corresponding author.It is an important issue to ensure the long-term reliable service of the reinforced concrete structures by developing effective online monitoring techniques. In this paper, three different accelerated corrosion experiments were conducted by using the electrochemical method, and the ultrasonic pitch-catch and the electrochemical impedance spectroscopy methods were employed to discuss the corrosion phenomena by using the embedded annular piezoelectric ultrasonic transducer. The results show that the capacitance arc length in the high frequency zone of the electrochemical impedance spectra increases gradually with increasing the corrosion rate. When the corrosion rate is larger than 3%, obvious corrosion products can be found on surface of the reinforced concrete, and there exist two capacitance arcs in the corresponding electrochemical impedance spectra. The ultrasonic analysis results show that there is an obvious longitudinal mode wave packet in the time domain spectra, and the peak-peak value shows a linear decreasing trend with increasing the corrosion time. The dominant frequency peak value also decreases with increasing the corrosion time accompanying with the appearances of the new peaks in the low frequency zone. The wavelet transform method was also employed for the ultrasonic time-frequency domain analysis. Based on variations of the acoustic energy and dominant frequency components of the ultrasonic wave, the corrosion extent of the reinforced concrete can be qualitatively evaluated.http://www.sciencedirect.com/science/article/pii/S2238785419322720ConcreteCorrosionUltrasonicPiezoelectricTransducer |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Peng Liu Yan Hu Bo Geng Dongyu Xu |
spellingShingle |
Peng Liu Yan Hu Bo Geng Dongyu Xu Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer Journal of Materials Research and Technology Concrete Corrosion Ultrasonic Piezoelectric Transducer |
author_facet |
Peng Liu Yan Hu Bo Geng Dongyu Xu |
author_sort |
Peng Liu |
title |
Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
title_short |
Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
title_full |
Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
title_fullStr |
Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
title_full_unstemmed |
Corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
title_sort |
corrosion monitoring of the reinforced concrete by using the embedded annular piezoelectric transducer |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-05-01 |
description |
It is an important issue to ensure the long-term reliable service of the reinforced concrete structures by developing effective online monitoring techniques. In this paper, three different accelerated corrosion experiments were conducted by using the electrochemical method, and the ultrasonic pitch-catch and the electrochemical impedance spectroscopy methods were employed to discuss the corrosion phenomena by using the embedded annular piezoelectric ultrasonic transducer. The results show that the capacitance arc length in the high frequency zone of the electrochemical impedance spectra increases gradually with increasing the corrosion rate. When the corrosion rate is larger than 3%, obvious corrosion products can be found on surface of the reinforced concrete, and there exist two capacitance arcs in the corresponding electrochemical impedance spectra. The ultrasonic analysis results show that there is an obvious longitudinal mode wave packet in the time domain spectra, and the peak-peak value shows a linear decreasing trend with increasing the corrosion time. The dominant frequency peak value also decreases with increasing the corrosion time accompanying with the appearances of the new peaks in the low frequency zone. The wavelet transform method was also employed for the ultrasonic time-frequency domain analysis. Based on variations of the acoustic energy and dominant frequency components of the ultrasonic wave, the corrosion extent of the reinforced concrete can be qualitatively evaluated. |
topic |
Concrete Corrosion Ultrasonic Piezoelectric Transducer |
url |
http://www.sciencedirect.com/science/article/pii/S2238785419322720 |
work_keys_str_mv |
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