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Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction

A technology of permeable concrete and CT scanning, applied in 3D modeling, preparation of test samples, instruments, etc., can solve problems such as inability to obtain repeatable experimental results, and achieve good control of variables and good experimental results

Active Publication Date: 2017-05-10
SHANDONG UNIV
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Problems solved by technology

Therefore, when conducting research experiments on the properties of permeable concrete, researchers o

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  • Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction
  • Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction
  • Pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0026] Such as figure 1 As shown, a method for making permeable concrete specimens based on CT scanning and 3D reconstruction, the specific implementation steps:

[0027] Scan sample preparation and handling

[0028] For the experimental section of the sponge city construction process, a cylindrical permeable concrete test block with a height of 20 cm and a diameter of 10 cm can be collected, and it can be scanned by CT under dry conditions and saturated with water. CT scans can use X-ray three-dimensional microscopes and other equipment Carry out, select the rotation scanning mode, and take the two-dimensional slice image (such as image 3 shown), analyzed and processed in 3D visualization software.

[0029] For the preparation of pervious concrete specimens in the traditional way in the laboratory, first calculate the water-cement ratio, bone-cemen...

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Abstract

The invention discloses a pervious concrete specimen manufacturing method based on CT scanning and 3D reconstruction. By obtaining a pervious concrete block specimen, a scanning two-dimensional slice image is obtained by conducting CT scanning; gray processing is conducted on the image, an image model is formed by operating filtering noise-reducing, the model is cut and binarization segmentation for the model is implemented, the aggregate structure of the pervious concrete is determined; by using the watershed algorithm, aggregate structure data is extracted, the optimized pervious concrete aggregate model is formed, and the model is printed and therefore the pervious concrete specimen is obtained. According to the pervious concrete specimen manufacturing method based on the CT scanning and the 3D reconstruction, the specimen formed by combing the CT scanning, 3D modeling and 3D printing is repeatedly applied to the same pervious concrete experimental study, variations are easily controlled in an experiment for testing specimen water permeability and porosity, a better experimental result is achieved, and compared with the pervious concrete produced by a traditional pervious concrete pouring and vibrating method, the pervious concrete specimen manufacturing method has great differences and advantages.

Description

technical field [0001] The invention relates to a method for making a permeable concrete specimen based on CT scanning and 3D reconstruction. Background technique [0002] At present, a large number of permeable pavements are used in the construction of sponge cities, including materials such as permeable concrete, permeable bricks, and permeable asphalt. Related experiments such as the measurement of porosity during the process of permeable concrete silt clogging and other in-situ tests are cumbersome. CT scanning combined with 3D Modeling 3D printing can quickly conduct tests and experiments on the physical parameters of permeable materials, including porosity, permeability, etc., to solve problems in practical engineering applications. This patent discloses a method for making permeable concrete specimens through CT scanning -> 3D modeling -> 3D printing to improve test repeatability. [0003] Permeable concrete is composed of water, cement, and coarse aggregate. S...

Claims

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Application Information

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IPC IPC(8): G01N1/28G06T17/10
Inventor 张炯马国栋明瑞平李莉崔新壮崔社强
Owner SHANDONG UNIV
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