<abstract xmlns="http://www.w3.org/1999/xhtml"><p>In order to reduce the damage to the old reinforced concrete walls and work out the best construction scheme during the renovation of old buildings, it is often required to detect the position of rebar buried in concrete walls. In this paper, we propose a non-destructive method to detect the buried rebar by self-inductive sensor combined with surface acoustic wave resonator (SAWR). The proposed method has the advantages of wireless, passive and convenient operations. In our new design, the sensing element of self-inductance coil was made as a component of SAWR matching network. The distribution of rebar could be measured according to the system resonant frequency, using a signal demodulation device set. The depth of buried rebar and the deviation of output resonant frequency from inherent frequency of SAWR have an inverse relation. Finally, the validity of the method was verified in theoretical calculation and simulation.</p></abstract>

In order to reduce the damage to the old reinforced concrete walls and work out the best construction scheme during the renovation of old buildings, it is often required to detect the position of rebar buried in concrete walls. In this paper, we propose a non-destructive method to detect the buried rebar by self-inductive sensor combined with surface acoustic wave resonator (SAWR). The proposed method has the advantages of wireless, passive and convenient operations. In our new design, the sensing element of self-inductance coil was made as a component of SAWR matching network. The distribution of rebar could be measured according to the system resonant frequency, using a signal demodulation device set. The depth of buried rebar and the deviation of output resonant frequency from inherent frequency of SAWR have an inverse relation. Finally, the validity of the method was verified in theoretical calculation and simulation.

Non-Destructive Detection of Rebar Buried in a Reinforced Concrete Wall with Wireless Passive SAW Sensor

School of Electronics and Information, Shanghai Jiao Tong University, No.800 Dongchuan Road, Minhang District, Shanghai, China

Hangzhou Normal University, No.16 Xuelin Street, Xiasha Higher Education Zone, Hangzhou, Zhejiang, China

Measurement Science Review

In order to reduce the damage to the old reinforced concrete walls and work out the best construction scheme during the renovation of old buildings, it is...

Non-Destructive Detection of Rebar Buried in a Reinforced Concrete Wall with Wireless Passive SAW Sensor

Publié en ligne: 09 févr. 2013

Pages: 25 - 28

DOI: https://doi.org/10.2478/msr-2013-0003

Mots clés
Reinforced concrete, rebar detection, passive wireless, non-destructive detection, surface acoustic wave resonator

This content is open access.

Non-Destructive Detection of Rebar Buried in a Reinforced Concrete Wall with Wireless Passive SAW Sensor

Publié en ligne: 09 févr. 2013

Pages: 25 - 28

DOI: https://doi.org/10.2478/msr-2013-0003

Mots clésReinforced concrete, rebar detection, passive wireless, non-destructive detection, surface acoustic wave resonator

This content is open access.

Mots clés
Reinforced concrete, rebar detection, passive wireless, non-destructive detection, surface acoustic wave resonator