Piezoelectric impedance technology-based concrete degradation monitoring sensor and system

Abstract

The invention discloses a piezoelectric impedance technology-based concrete degradation monitoring sensor and system and relates to the technical field of concrete material degradation monitoring. Thesensor comprises a piezoelectric patch, a concrete test piece and hard packaging shells; the piezoelectric patch is adhered to the concrete test piece; the number of the hard packaging shells is two;the piezoelectric patch and concrete are both packaged between the two hard packaging shells. The sensor and the system provided by the invention can realize the degradation monitoring of a service concrete structure under the effects of long-term erosion environment influence and load coupling.

Description

technical field [0001] The invention relates to the technical field of concrete material degradation monitoring, in particular to a concrete degradation monitoring sensor and system based on piezoelectric impedance technology. Background technique [0002] There has been a lack of effective on-site real-time monitoring methods for monitoring the deterioration of concrete materials. Traditional methods generally use core drilling on the surface of concrete specimens and conduct destructive tests in the laboratory to measure the attenuation of concrete mechanical properties, but such methods cannot achieve effective structural monitoring purposes and will cause local damage to concrete. Non-destructive monitoring of structures can be realized based on acoustic emission technology, ultrasonic guided wave method, and optical fiber sensing technology, but most of the current research focuses on the monitoring of concrete damage caused by external force loads, and rarely involves ...

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Problems solved by technology

Traditional methods generally use core drilling on the surface of concrete specimens and conduct destructive tests in the laboratory to measure the attenuation of the mechanical properties of concrete, but this method cannot achieve effective structural monitoring purposes and will cause local damage to the concrete

Non-destructive monitoring of structures can be realized based on acoustic emission technology, ultrasonic guided wave method, and optical fiber sensing technology, but most of the current research focuses on the monitoring of concrete damage caused by external force loads, and rarely involves the monitoring of concrete material degradation under environmental factors. There are certain limitations

Existing monitoring methods for concrete material degradation have shortcomings such as large damage to the structure, severe site restrictions, and single influencing factors, and cannot take into account both experimental research and engineering applications. Therefore, it is extremely important to propose an accurate and efficient concrete degradation monitoring method

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