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A method for testing the quality of concrete crack repair

A quality inspection method and crack repair technology, which is applied to measuring devices, instruments, and the use of sound waves/ultrasonic waves/infrasonic waves to analyze solids, etc., can solve the problem of unrepaired, inability to make judgments, and quantitative determination of the degree of repair of cracks inside concrete. Issues such as the accurate depth of the area, to achieve the effect of reliable data support and reduce the workload of the later stage

Active Publication Date: 2022-03-01
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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  • A method for testing the quality of concrete crack repair
  • A method for testing the quality of concrete crack repair
  • A method for testing the quality of concrete crack repair

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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 patent of the present invention relates to the technical field of non-destructive testing of construction engineering, in particular to a method for detecting the repair quality of concrete cracks. Combining with the amplitude-frequency characteristics after crack repair, a new method for quantitatively judging the degree of crack repair is proposed. Quantitative The results of the repair degree and the test error range of this method are obtained. The research of this invention belongs to the research field of non-destructive testing technology in construction engineering. This method can be used in the process of repairing cracks in concrete beams such as buildings and bridges. Repair quality inspection has a good reference.

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 Patents(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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