Diagnostics of Damages in Reinforced Concrete by the Parameters of Electric Response to Mechanical Impact

3rd World Multidisciplinary Civil Engineering, Architecture, Urban Planning Symposium

土木建筑工程;文学

Petrov, Maxim^1 ; Osipov, Konstantin^2 ; Fursa, Tatyana^1 ; Dann, Denis^1

Tomsk Polytechnic University, Lenin Avenue 30, Tomsk

634050, Russia^1

V.E. Zuev Institute of Atmospheric Optics SB RAS, Academician Zuev Square 1, Tomsk

634055, Russia^2

关键词: Correlation coefficient;    Crack formation and growths;    Electric response;    Energy attenuation;    Frequency domains;    Maximum correlation coefficient;    Mechanical impacts;    Non destructive testing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/471/5/052048/pdf
DOI  :  10.1088/1757-899X/471/5/052048

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

A method for non-destructive testing of reinforced concrete based on the phenomenon of mechano-electric transformations is proposed in this work. The procedure for assessing damage in concrete is based on the measurement of an electric response to a weak elastic impact. It was found that the moments of crack formation and growth during bending are accompanied by a significant decrease in the correlation coefficient of the electric responses spectra and by a stepwise change in spectrum shift (at frequency domain) at which the maximum correlation coefficient is observed. It was determined that the increase of energy attenuation coefficient of the electric response can serve as a forerunner of a catastrophic destruction in concrete. The diagnostic criteria proposed in this work can be used for monitoring the damage processes in reinforced concrete under bending conditions.