Acoustic Emission Behavior of Early Age Concrete Monitored by Embedded Sensors

Acoustic emission (AE) is capable of monitoring the cracking activities inside materials. In this study, embedded sensors were employed to monitor the AE behavior of early age concrete. Type 1-3 cement-based piezoelectric composites, which had lower mechanical quality factor and acoustic impedance,...

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Bibliographic Details
Published inMaterials Vol. 7; no. 10; pp. 6908 - 6918
Main Authors Qin, Lei, Ren, Hong-Wei, Dong, Bi-Qin, Xing, Feng
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 02.10.2014
MDPI
Subjects
Acoustic emission
Acoustics
Age
Broadband
Cement hydration
Civil engineering
Concrete
Concretes
cracking
Cracks
early age concrete
Embedded sensors
Fracture mechanics
mass concrete
piezoelectric composites
Sensors
China
piezoelectric composites
acoustic emission
early age concrete
cracking
mass concrete
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Summary:Acoustic emission (AE) is capable of monitoring the cracking activities inside materials. In this study, embedded sensors were employed to monitor the AE behavior of early age concrete. Type 1-3 cement-based piezoelectric composites, which had lower mechanical quality factor and acoustic impedance, were fabricated and used to make sensors. Sensors made of the composites illustrated broadband frequency response. In a laboratory, the cracking of early age concrete was monitored to recognize different hydration stages. The sensors were also embedded in a mass concrete foundation to localize the temperature gradient cracks.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma7106908