1.东南大学 材料科学与工程学院， 江苏 南京 211189;2.东南大学 江苏省土木工程材料重点实验室，江苏 南京 211189;3.浙江新世纪工程检测有限公司，浙江 杭州 310022
陈 春（1975—），男，江苏扬州人，东南大学副研究员，硕士生导师，博士.E-mail：101005550@seu.edu.cn
张亚梅（1968—），女，江苏如皋人，东南大学教授，博士生导师，博士.E-mail：ymzhang@seu.edu.cn
TU528.01
2022年度南京市建设行业科技计划项目（Ks2216）
1.School of Materials Science and Technology， Southeast University， Nanjing 211189， China;2.Jiangsu Key Laboratory of Construction Materials， Southeast University， Nanjing 211189， China;3.Zhejiang New Century Engineering Detection Co.， Ltd.， Hangzhou 310022， China
采用工业CT对混凝土中的钢渣颗粒和普通石子进行三维扫描，获得两者在形貌上的差异.将钢渣颗粒按体积分数3%、6%和9%掺入混凝土中，并使用工业CT扫描获得不同掺量钢渣颗粒混凝土试样的形貌学特征.基于图像相似法得到钢渣颗粒的灰度范围，并采用该灰度范围对图像进行二值化处理，计算钢渣颗粒的掺量.结果表明：钢渣颗粒掺量的计算结果与实际掺入的钢渣颗粒体积分数较为接近，误差范围小于
Industrial computed tomography （CT） was used to perform 3D scanning of steel slag particles and natural gravel in concrete， and their morphological differences were obtained. Steel slag particles were mixed into concrete in volume fraction of 3%， 6% and 9% and industrial CT scanning was used to determine morphological characteristics of concrete specimens containing varying proportions of steel slag particles. Based on the image similarity method， the gray range of steel slag was obtained， and the image was binarized to calculate the content of steel slag particles. The results show that the calculated results are found to be relatively close to the actual steel slag particles volume fraction added， with an error range of less than ± 10% of the actual value， indicating high accuracy. Finally， industrial CT， X-ray fluorescence spectroscopy （XRF） and other testing methods were used to scientifically analyze the causes of concrete appearance quality accidents caused by steel slag particles in an actual project.
陈春,李之涵,潘伟行,傅琦,张亚梅.工业
