| 摘要: |
| 基于图像分析技术，分析了粉煤灰颗粒群的形貌特征，提出了可量化表征颗粒群形貌的参数，并以此作为区分粉煤灰颗粒群形貌品质的判据之一.结果表明：粉煤灰颗粒群的形貌特征可用不同圆度等级下的颗粒面积占比来表征，其中SR>0.8/SR>0.5（圆度R>0.8与R>0.5颗粒的表面积比）最能体现粉煤灰颗粒群形貌的特征差异；当图像放大200倍时，高形貌品质粉煤灰的SR>0.8/SR>0.5可达到10%以上，与非球状颗粒粉体形貌存在明显的差异. |
| 关键词: 粉煤灰 图像分析技术 形貌特征 圆度 |
| DOI：10.3969/j.issn.1007-9629.2023.04.015 |
| 分类号:TQ172 |
| 基金项目:“十三五”国家重点研发计划项目（2019YFC1906203） |
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| Morphology Characterization of Fly Ash Particles Based on Image Analysis Technology |
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QIAN Panyue1, GONG Mingzi2, HUANG Bin2, YAO Wu1
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1.Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education， Tongji University， Shanghai 201804， China;2.CCCC First Highway Xiamen Engineering Co.， Ltd.， Xiamen 361021， China
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| Abstract: |
| Based on image analysis technology， the morphological characteristics of fly ash particle groups were analyzed， and the parameters that can quantify the morphology of particle groups were proposed to be one of the criteria to distinguish the morphology quality of fly ash. The results show that the morphology characteristics of fly ash particle groups can be accurately characterized by the proportion of particle area ratio under different roundness grades， and the SR>0.8/SR>0.5 （the ratio of particle surface area of roundness above 0.8 to that above 0.5） can best describe the morphological characteristics of particle groups. When it is at 200 times magnification and above， the SR>0.8/SR>0.5 of qualified fly ash can exceed 10%， the fact is significantly different from that non-spherical particle powder. |
| Key words: fly ash image analysis technology morphology characteristic roundness |
