Concrete crack repairing quality detection method

A quality inspection method and crack repair technology, which can be used in measuring devices, solid analysis using sound waves/ultrasonic waves/infrasonic waves, material analysis using sound waves/ultrasonic waves/infrasonic waves, etc. Determine the degree of repair of cracks inside the concrete, the exact depth of the unrepaired area, etc., to achieve reliable data support and reduce post-workload effects

Active Publication Date: 2019-11-15
福建博海工程技术有限公司
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Problems solved by technology

However, it is impossible to make a judgment on the specific repair situation inside the crack, how deep the crack is unrepaired, and where the unrepaired crack is located.
[0004] To sum up, if the cracks are not repaired completely, we can only roughly estimate whether the cracks inside the concrete are well repaired, and cannot quantitatively determine the specific repair degree of the cracks inside the concrete and the exact depth of the unrepaired area.

Method used

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  • Concrete crack repairing quality detection method
  • Concrete crack repairing quality detection method
  • Concrete crack repairing quality detection method

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Embodiment 1

[0059] In this example, the overall technical solution is as follows:

[0060] Remove noise in spectrogram

[0061] Since the energy of the wave is proportional to the square of the wave amplitude and the amplitude of the spectrogram after Fourier transform is proportional to the signal amplitude, the low-energy noise introduced during crack detection can be screened according to the amplitude of the spectrum to reduce Computational amount for defect frequency extraction. According to the crack spectrogram, it can be found that the amplitude range of most low-energy noise points is relatively concentrated. Therefore, the comprehensive mathematical statistics of the amplitudes of different crack spectrograms find that 95% of the amplitudes are in the low amplitude range. Based on this, it is determined For the maximum amplitude points within this range, the amplitude points in the amplitude-frequency characteristics of the fracture are screened one by one. If the frequency amp...

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Abstract

The invention patent relates to the technical field of the constructional engineering nondestructive detection, and especially relates to a detection method of the concrete crack repairing quality. Anew quantitative judgment method of crack repairing degree after the crack repairing is provided by combining the amplitude-frequency characteristic after crack repairing, thereby quantitatively obtaining a repairing degree result and the testing error range of the method. The research of the invention belongs to the research field of the constructional engineering nondestructive detection technology. The method can be used for the crack repairing process of the housing construction, and bridge and like concrete beam; whether the unknown crack and the crack are completely repaired can be quantitatively evaluated, and the method has good reference function for the crack repairing quality acceptance on the engineering.

Description

technical field [0001] The invention relates to the technical field of non-destructive testing of construction engineering, in particular to a method for testing the quality of concrete crack repair. Background technique [0002] At present, there are three commonly used detection methods for the depth of cracks: one is the ground penetrating radar method, which uses a transmitter to emit electromagnetic waves to concrete. When it encounters materials with different electromagnetic properties such as steel bars or defects, the electromagnetic waves will be reflected back. After receiving the reflected wave, the electromagnetic wave can obtain a waveform diagram, and based on this diagram, the internal defects of the concrete can be inferred. The second is the ultrasonic method, which uses a transmitter to continuously emit ultrasonic pulse waves, so that the ultrasonic waves propagate in the detected concrete, and then the transducer receives the signal. The received signal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04
CPCG01N29/045G01N2291/0232
Inventor 苏忠高林发明杨敏刘景熙
Owner 福建博海工程技术有限公司
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