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Method for detecting character of pores of pervious concrete by processing images

A technology of permeable concrete and image processing, which is applied in the direction of measuring device, permeability/surface area analysis, suspension and porous material analysis, etc., to achieve the effect of convenient data processing, simple experimental operation, and shortened experimental data processing time

Inactive Publication Date: 2015-05-06
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there are no relevant regulations and methods for the determination of the total porosity and internal pore diameter of permeable concrete.

Method used

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  • Method for detecting character of pores of pervious concrete by processing images
  • Method for detecting character of pores of pervious concrete by processing images
  • Method for detecting character of pores of pervious concrete by processing images

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] like image 3 Shown, the detection method of the permeable concrete pore feature based on image processing of the present invention, comprises the following steps:

[0035] A method for detecting the pore characteristics of permeable concrete based on image processing, comprising the following steps:

[0036] Step (1): Transversely cut the permeable concrete specimen to expose a complete and smooth cutting plane as the experimental surface;

[0037] Step (2): In order to accurately distinguish the pores of the experimental surface from the concrete, fill the pores of the experimental surface with brick powder, remove the excess brick powder, and obtain a frontal photo of the permeable concrete experimental surface treated with brick powder; use millions of pixels Ordinary camera or mobile phone with or above;

[0038] Step (3): From the obtained frontal pho...

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Abstract

The invention provides a method for detecting the character of pores of pervious concrete by processing images. The method comprises the following steps: cutting a pervious concrete sample transversely to expose an intact and smooth cutting plane which serves as an experimental surface; obtaining the images of the obverse side of the experimental surface of the brick-powder processed pervious concrete; selecting the largest regular section image of the sample from the obtained images of the obverse side, and calculating the total pixel value of the largest regular section image; blacking and whitening the selected image; extracting the pore image of the blacked and whitened image, and calculating the pixel value of each pore; calculating the total pixel value of the pores; calculating the total porosity and the distribution situation of internal pore diameters according to the obtained pixel values of the pores and the obtained total pixel value of the pores; repeating the steps, obtaining the total porosity of a plurality of cutting surfaces of the same pervious concrete sample and the distribution situation of pore diameters, and calculating the average value of the total porosity of the cutting surfaces of the same pervious concrete sample to obtain the total porosity of the pervious concrete sample and further the character of the pores of the pervious concrete.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a method for detecting pore characteristics of permeable concrete based on image processing. Background technique [0002] In recent years, the research and application of pervious concrete have become more and more extensive at home and abroad. Permeable concrete is composed of water, cement and coarse aggregate. Coarse aggregate is used as the skeleton, and a thin layer of cement paste or mortar is wrapped on the surface of the coarse aggregate particles to serve as a cementing layer between the aggregate particles. The particles are cemented by a thin layer of hardened cement slurry to form a porous packing structure. Therefore, there are a large number of pores in concrete, including connected pores, open but not connected pores, and internal closed pores, which are collectively referred to as total porosity. The total porosity has a direct impact on the density...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
Inventor 葛智周健孙仁娟黄大伟
Owner SHANDONG UNIV
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