基于CT扫描及图像处理技术的机制砂形貌研究

doi:10.11896/cldb.22060032

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Abstract At present, the research on the morphology of manufactured sand often focuses on the macro parameters represented by sphericity, which may be a certain one-sided in this. To comprehensively study the morphology of manufactured sand from macro to micro, the sand morpho-logy parameters are decomposed into the following four dimensions:sphericity, convex ratios, roughness and specific surface area. Based on CT scanning, digital images of sand samples of 2 particle sizes and 3 lithologies were collected, and the sand morphology parameters were calcula-ted quantitatively after the image was processed by Avizo and Matlab software; the function formula of morphology parameters was established, and the relationship between the four dimensional parameters was revealed. It is found that:the image processing method can calculate the sand morphology parameters with high accuracy; after magnifying the sand surface 50 and 200 times by SEM, it can be further found that the convex ratios is suitable for describing the sand morphology at a magnification of 50 times, and the surface roughness is suitable for describing the sand morphology at a magnification of 200 times; sphericity, convex ratios, and roughness are independent of particle size, the specific surface area is inversely proportional to particle size; it is concluded that sphericity and convex ratios obey Weibull distribution, while roughness and specific surface area obey normal distribution.

Key words： manufactured sand CT scanning image processing morphology parameter sphericity convex ratio roughness specific surface area

Published: 10 October 2023 Online: 2023-09-28

CLC number:

TU521.1

Fund:National Natural Science Foundation of China (U21A20150, 52008196, 52108219), the Higher Education Industry Support Program Project of Gansu(2022CYZC-25) and the Natural Science Foundation of Gansu(20JR5RA440).

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	Articles by authors
	HAN Zhao
	ZHANG Yunsheng
	QIAO Hongxia
	FENG Qiong
	XUE Cuizhen
	SHANG Minggang

Cite this article:

HAN Zhao,ZHANG Yunsheng,QIAO Hongxia, et al. Study on Morphology of Manufactured Sand Based on CT Scanning and Image Processing Technology[J]. Materials Reports, 2023, 37(19): 22060032-6.

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http://www.mater-rep.com/EN/10.11896/cldb.22060032 OR http://www.mater-rep.com/EN/Y2023/V37/I19/22060032

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