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3D (three dimensional) printing method of transparent pervious concrete samples based on CT scanning

A technology of permeable concrete and CT scanning, applied in 3D modeling, image analysis, details involving processing steps, etc., can solve problems such as high cost, technical difficulties, differences, etc., and achieve good control variables and good experimental results

Active Publication Date: 2017-06-13
SHANDONG UNIV
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Problems solved by technology

[0005] 3D printing concrete technology can currently use raw materials such as cement, sand, water, and additives to print permeable concrete test blocks, but the cost is high and the technology is difficult. Compared with the pervious concrete test blocks, there are certain differences

Method used

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  • 3D (three dimensional) printing method of transparent pervious concrete samples based on CT scanning
  • 3D (three dimensional) printing method of transparent pervious concrete samples based on CT scanning
  • 3D (three dimensional) printing method of transparent pervious concrete samples based on CT scanning

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[0042] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0043] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0044] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a 3D (three dimensional) printing method of transparent pervious concrete samples based on CT scanning. The method comprises the following steps: collecting pervious concrete samples, carrying out CT scanning on the pervious concrete samples to generate two-dimensional slice images, carrying out gray processing on the two-dimensional slice images, characterizing distribution of different colors by using different grey levels, and carrying out filtration and noise reduction treatment; reconstructing a three-dimensional model by using a three-dimensional visualization technology according to the treated two-dimensional images; multiplying according to the number of voxels and the number of images to calculate the size of a required sample model, and cutting the reconstructed three-dimensional model according to the calculated size; and carrying out binary segmentation on the cut model, extracting an aggregate structure, and printing the pervious concrete samples layer by layer by using a 3D printing technology according to an obtained pervious concrete aggregate model. Through the method, the original pervious concrete samples are subjected to CT scanning, 3D modeling and 3D printing technologies and are finally produced into a transparent pervious concrete material; the method provides great help to the research of blockage mechanism and process of the pervious concrete.

Description

technical field [0001] The invention specifically relates to a 3D printing method for a transparent permeable concrete specimen based on CT scanning. 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. [0003] In the traditional pervious concrete preparation process, the parameters such as water-cement ratio and bone-cement ratio of permeable concrete must be determined first. Coarse aggregate and half of water are first added to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/386B33Y50/00G06T7/10G06T7/136G06T17/00
CPCB33Y50/00G06T17/00G06T2200/08G06T2207/10081
Inventor 张炯马国栋明瑞平李莉崔新壮刘彩
Owner SHANDONG UNIV
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