不同类型粗骨料的图像三维重构及其形貌特征参数对比分析

doi:10.11896/cldb.24090072

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Abstract Coarse aggregate is the main component of concrete, and its morphology characteristics are highly correlated with the properties of concrete. In order to quantify the morphology of coarse aggregates more accurately and analyze the differences in morphology characteristics of diffe-rent types of coarse aggregates, this work combined three-dimensional laser scanning technology and digital image processing technology to rea-lize the three-dimensional reconstruction to the images of crushed coarse aggregates, pebble coarse aggregates and coal gangue coarse aggregates. The differences of their morphology characteristic parameters at macro, meso and micro scales were compared, and the Pearson correlation analysis method was used to measure the linear relationship between these parameters. The results show that among the three types of coarse aggregates, the overall shape of pebble coarse aggregate is the closest to the sphere, the crushed coarse aggregate shows the most significant multi-angular characteristics, and the surface of coal gangue coarse aggregate is the roughest. The sphericity of the three types of coarse aggregate is concentrated between 0.6 and 0.8. The angularity index of crushed coarse aggregate and coal gangue coarse aggregate is above 250, while pebble coarse aggregate’s is mostly below 250, and the maximum roughness index of pebble coarse aggregate is smaller than the minimum roughness index of coal gangue coarse aggregate. The sphericity, angularity index and roughness index are not correlated with each other, which can be used as quantitative indicators for the overall shape, angularity and surface roughness of coarse aggregate, respectively.

Key words： coarse aggregate morphology characteristic 3D laser scanning statistical analysis

Published: 10 November 2025 Online: 2025-11-10

CLC number:	TU521
	TV42

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	Articles by authors
	WU Junqing
	LUO Zhu
	WU Zijie
	FU Zhijun
	WU Qinghua
	ZHOU Guoliang
	LU Weiwei
	YANG Jialin

Cite this article:

WU Junqing,LUO Zhu,WU Zijie, et al. Three-dimensional Reconstruction to Images of Different Types of Coarse Aggregates and Comparative Analysis of Their Morphology Characteristic Parameters[J]. Materials Reports, 2025, 39(21): 24090072-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24090072 OR https://www.mater-rep.com/EN/Y2025/V39/I21/24090072

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