A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Automated and Continuous Monitoring of Freeze-Thaw Damage in Concrete Using Embedded Piezoelectric Transducers
In this paper, we propose to monitor the evolution of damage in freeze-thaw cycles tests using embedded ultrasonic piezoelectric transducers. The transducers are used in emitter-receiver pairs. Concrete specimens were subjected to 70 freeze-thaw cycles of 12 h in temperature ranges from −20 ℃ to +17 ℃ and the monitoring system automatically and continuously recorded ultrasonic signals every 5 min. With such rich information, it is possible to monitor the difference between recorded signals during freezing and thawing phases, as well as transition times between these two phases. Several indicators were extracted from the recorded signals to evaluate the level of degradation of the concrete, including the traditional wave velocity and the first wave amplitude of the recorded signals as well as Coda wave parameters. The results show that the first wave amplitude is a more sensitive indicator of early freeze-thaw damage than the traditionally used wave velocity. Coda wave interferometry (CWI) also proves to be an interesting and complementary indicator to better understand the freeze-thaw damage mechanism in concrete.
Automated and Continuous Monitoring of Freeze-Thaw Damage in Concrete Using Embedded Piezoelectric Transducers
In this paper, we propose to monitor the evolution of damage in freeze-thaw cycles tests using embedded ultrasonic piezoelectric transducers. The transducers are used in emitter-receiver pairs. Concrete specimens were subjected to 70 freeze-thaw cycles of 12 h in temperature ranges from −20 ℃ to +17 ℃ and the monitoring system automatically and continuously recorded ultrasonic signals every 5 min. With such rich information, it is possible to monitor the difference between recorded signals during freezing and thawing phases, as well as transition times between these two phases. Several indicators were extracted from the recorded signals to evaluate the level of degradation of the concrete, including the traditional wave velocity and the first wave amplitude of the recorded signals as well as Coda wave parameters. The results show that the first wave amplitude is a more sensitive indicator of early freeze-thaw damage than the traditionally used wave velocity. Coda wave interferometry (CWI) also proves to be an interesting and complementary indicator to better understand the freeze-thaw damage mechanism in concrete.
Automated and Continuous Monitoring of Freeze-Thaw Damage in Concrete Using Embedded Piezoelectric Transducers
Lecture Notes in Civil Engineering
Rizzo, Piervincenzo (editor) / Milazzo, Alberto (editor) / Narayanan, Arun (author) / Ali Sheikh Ali (author) / Delsaute, Brice (author) / Pierre, Christian (author) / Deraemaeker, Arnaud (author)
European Workshop on Structural Health Monitoring ; 2022 ; Palermo, Italy
2022-06-16
9 pages
Article/Chapter (Book)
Electronic Resource
English
Self-monitoring of freeze–thaw damage using triphasic electric conductive concrete
| British Library Online Contents | 2015
Self-monitoring of freeze–thaw damage using triphasic electric conductive concrete
| BASE | 2015
| Wiley | 2016
Concrete early-age strength monitoring using embedded piezoelectric transducers
| British Library Online Contents | 2006