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| Naji, M. |
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| Motta, Antonella |
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| Ertürk, Emre |
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| Petrov, R. H. | Madrid |
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| Azevedo, Nuno Monteiro |
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Deraemaeker, Arnaud
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Publications (5/5 displayed)
- 2016Measurement of acoustic emission source location accuracy loss of concrete under bending
- 2016Healing performance monitoring using embedded piezoelectric transducers in concrete structures
- 2014Healing performance on concrete under mode I fracture by ultrasonic testing using embedded transducers, acoustic emission and digital image correlation method.
- 2014A comparison of acoustic emission, ultrasonic testing using embedded transducers and digital image correlation for the monitoring of crack propagation in concrete
- 2008Electric field distribution in macro fiber composite using interdigitated electrodes
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document
Healing performance monitoring using embedded piezoelectric transducers in concrete structures
Abstract
Concrete structures are prone to degradation due to operational and ambient loadings, as well as to a series of environmental effects which can seriously decrease their anticipated operational service life. In the present study, the use of ultrasonic pulse velocity method based on embedded smallsize and low-cost piezoelectric transducers for the online monitoring of small-scale notched unreinforced concrete beams with autonomous self-healing embedded encapsulation system, is experimentally verified. Initially, the concrete beams are subjected to a three-point bending test and the cracking formation and extension trigger the release of the encapsulated healing agent into the void of the cracks. After a 24-hour healing agent curing period, the beams are reloaded following the same loading protocol. The results demonstrate the excellent performance of the proposed monitoring technique during the early-age, the cracking formation and recovery periods.