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Bare concrete appearance quality evaluation method

A technology for fair-faced concrete and appearance quality, which is used in measuring devices, color/spectral property measurement, optical testing flaws/defects, etc. It can solve the limitations on the promotion and application of fair-faced concrete, the lack of quantitative evaluation of fair-faced concrete, and the large differences between construction units, etc. problems, to achieve the effect of increasing the frequency of sampling points, eliminating subjectivity, and reducing complexity

Pending Publication Date: 2021-04-06
中国水利水电第三工程局有限公司
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  • Claims
  • Application Information

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Problems solved by technology

Due to the lack of a unified standard for quantitative evaluation of the main characteristic indicators of the appearance quality of clear-water concrete, the construction units have great differences in their definitions and quality standards, and the project quality is uneven, which limits the promotion and application of clear-water concrete.

Method used

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  • Bare concrete appearance quality evaluation method
  • Bare concrete appearance quality evaluation method
  • Bare concrete appearance quality evaluation method

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Embodiment 1

[0113] A method for evaluating the appearance quality of fair-faced concrete, the main operations of which include the following:

[0114] Step 1, first determine the image acquisition area of ​​the inspected fair-faced concrete, and then respectively collect images of color difference, air bubbles and defects of the inspected fair-faced concrete;

[0115] The tools used for image acquisition include: white balance board, fair-faced concrete image grayscale calibration board, ruler, camera, and tripod.

[0116] (1) Determination of the total area of ​​the tested concrete 8.10m 2 , where the color difference and air bubbles of the inspected clear-faced concrete adopt the uniform distribution method, which is not less than 50% of the total area of ​​the inspected concrete, and the sampling area is 4.05m 2 ; The defects of the inspected concrete adopt the targeted fixed-point acquisition method, and image acquisition is carried out in the entire range of the inspected concrete; ...

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Abstract

The invention discloses a bare concrete appearance quality evaluation method which specifically comprises the following steps: firstly, determining an image acquisition area of detected bare concrete, and then respectively acquiring images of chromatic aberration, bubbles and defects of the detected bare concrete; processing the acquired color difference, bubble and defect images; measuring cracks, open cracks, Zen cracks and surface flatness of the bare concrete on site; comprehensively scoring 7 indexes of chromatic aberration, bubbles, defects, cracks, open seams, Zen seams and surface flatness, and grading the appearance quality of the ash removal concrete according to the comprehensive scores. The evaluation method systematically and quantitatively evaluates the appearance quality of the bare concrete, and the one-sidedness of concrete appearance quality evaluation in the prior art is avoided.

Description

technical field [0001] The invention relates to the field of concrete quality evaluation, in particular to a method for evaluating the appearance quality of fair-faced concrete. Background technique [0002] With the development of society, fair-faced concrete has attracted more and more attention, and has become a new bright spot in housing construction, municipal engineering, and bridge engineering. As fair-faced concrete directly adopts the natural color of cast-in-place concrete as the concrete project of the finish, it must ensure the appearance effect while satisfying the mechanical properties and durability of the concrete. In the existing specifications, the "Technical Regulations for the Application of Fair-faced Concrete" (JGJ 169-2009) stipulates the color, repair, air bubbles, cracks, smoothness, bolt holes, open seams, and cicada seams of fair-faced concrete. Among them Chromatic aberration, bubbles, cracks and defects are the key factors of appearance quality,...

Claims

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Application Information

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IPC IPC(8): G01N21/88G01N21/25G01N21/84G01B11/30
CPCG01N21/8851G01N21/25G01N21/84G01B11/30G01N2021/8887
Inventor 陈晨焦凯孔海峡王亚萍李灼然郭小安汪显军燕陇琪路郑郑
Owner 中国水利水电第三工程局有限公司
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