Development of a rapid measurement system for coarse aggregate morphological parameters  

作　　者：Hejun Zhu Huaiying Fang Yuanyuan Cai Ning Lv 

机构地区：[1]College of Mechanical Engineering and Automation,Huaqiao University,Xiamen 361021,Fujian,China

出　　处：《Particuology》2020年第3期181-188,共8页颗粒学报（英文版）

摘　　要：Morphological parameters of coarse aggregates,including the angularity index (Al),flat and elongated ratio,flatness ratio,and sphericity,strongly affect the performance of asphalt concrete.A device must be developed to efficiently and accurately measure these parameters.Herein,a charge-coupled device camera and a linear profile scanner are combined to evaluate the parameters.The Al is calculated using three methods.The results show that the fitted-ellipse method provides superior results among the three Al measurement methods.Moreover,the use of a linear profile scanner improves the Al measurement accuracy.Therefore,the proposed combination has high measurement efficiency and is suitable for batch inspections.

关 键 词：Charge-coupled device camera Linear profile scanner ANGULARITY Flatness ratio SPHERICITY 

分 类 号：TU528[建筑科学—建筑技术科学]