[1] Zhou Xinwen, , Liu Jianzhong, et al. Shape characterization of sand particlesbased on digital image processing technology [J]. Journal of Southeast University (English Edition), 2020, 36 (3): 313-321. [doi:10.3969/j.issn.1003-7985.2020.03.009]

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Shape characterization of sand particlesbased on digital image processing technology()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

36

Issue:

2020 03

Page:

313-321

Research Field:

Materials Sciences and Engineering

Publishing date:

2020-09-20

Info

Title:

Shape characterization of sand particlesbased on digital image processing technology

Author(s):

Zhou Xinwen¹;  2;  4;  Liu Jianzhong²;  4;  Zhu Jiang³;  Mao Yonglin⁴;  Liu Jiaping¹;  2

¹ School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
² State Key Laboratory of High Performance Civil Engineering Materials, Jiangsu Research Institute of Building Science, Nanjing 210008, China
³ College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China
⁴ Sobute New Materials Co., Ltd., Nanjing 211103, China

Keywords:

particle shape;  sand;  form;  angularity;  digital image processing

PACS:

TU521

DOI:

10.3969/j.issn.1003-7985.2020.03.009

Abstract:

To characterize the shape of sand particles for concrete, a new method is proposed based on digital image processing(known as the DIP method). By analyzing sand particles projection, the length, width and thickness of sand were measured to characterize particle form. The area and perimeter were measured to characterize particle angularity. The results of the DIP method and Vernier caliper were compared to examine the accuracy of the DIP method. The sample size test was conducted to show the statistical significance of shape results measured by the DIP method. The practicality of the DIP method was verified by instance analysis. The results show that aspect ratios and roundness measured by the DIP method are equal to ones by the Vernier caliper. Results by DIP are dependent on the sand particle number, and at least 350 particles should be measured to represent the overall shape property of sand. The results show that the DIP method is able to distinguish the differences in the shape of sand particles. It achieves the direct measurement of sand particle thickness, and the characterization results of sand aspect ratios and roundness are accurate, statistically significant and practical. Therefore, the DIP method is suitable for sand particle shape characterization.

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Memo

Memo:

Biographies: Zhou Xinwen(1994—), male, graduate; Liu Jiaping(corresponding author), male, doctor, professor, ljp@cnjsjk.cn.
Foundation items: The National Key Research and Development Program of China(No. 2017YFB0310100), the National Natural Science Foundation of China(No. 51978318).
Citation: Zhou Xinwen, Liu Jianzhong, Zhu Jiang, et al.Shape characterization of sand particles based on digital image processing technology[J].Journal of Southeast University(English Edition), 2020, 36(3):313-321.DOI:10.3969/j.issn.1003-7985.2020.03.009.

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