再生砖混粗骨料颗粒的形态表征与分析  

Morphological Characterization and Analysis of Recycled Brick Concrete Coarse Aggregate Particles

作　　者：杨秀芬 黄佳富 戴大旺 杨潮军 孟涛[1] YANG Xiufen;HUANG Jiafu;DAI Dawang;YANG Chaojun;MENG Tao(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China;Zhejiang Construction Engineering Quality Inspection Station Co.,Ltd.,Hangzhou 310012,China)

机构地区：[1]浙江大学建筑工程学院,杭州310058 [2]浙江省建设工程质量检验站有限公司,杭州310012

出　　处：《硅酸盐通报》2021年第8期2659-2669,共11页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(52078453)。

摘　　要：本文采用图像处理技术对再生砖混粗骨料的颗粒形态进行了表征,计算并分析了各组分的高宽比、圆整度和紧凑系数等特征参数的分布情况。试验结果表明,通过颜色分析可以准确识别骨料材质,基于识别结果求得的骨料颗粒的高宽比、圆整度和紧凑系数具有相似的分布规律。砖、石、木和陶瓷4种组分中,砖和石占比较大,其特征参数也相差较小,针状颗粒少,圆整度好,而木骨料则多为针状颗粒,高宽比较大,陶瓷则由于具有较高的强度,其面积和周长相较于其余骨料最大。此外,砖、石骨料不同等效直径的级配分布基本成正态分布,能够混合形成一种级配良好的骨料。研究成果有助于揭示再生砖混粗骨料的颗粒形态特点,推动再生砖混粗骨料的研究和应用。In this study,the digital image processing technology was used to characterize the particle shape of the recycled brick concrete coarse aggregate.The distribution of characteristic parameters such as height width ratio,roundness and compact factor of each component was also analyzed.The experimental results show that the aggregate material is accurately identified through the color analysis,and the height width ratio,roundness and compact factor of the aggregate particles obtained based on the identification results have similar distribution rules.Among the four components of brick,stone,wood and ceramics,brick and stone account for a relatively larger proportion,and their characteristic parameters are also relatively similar,with less needle-like particles and better roundness,while wood aggregate is mostly needle-like particles with a larger height width ratio.Ceramics has the largest area and perimeter due to its higher strength.In addition,the gradation distribution of the brick and stone aggregates is basically a normal distribution,which can be mixed to form a well-graded aggregate.The research results are helpful to reveal the particle morphology characteristics of the recycled brick concrete coarse aggregate,and promote the research and application of the recycled brick concrete coarse aggregate.

关 键 词：再生砖混粗骨料 形态表征 数字图像处理 高宽比 圆整度 紧凑系数 

分 类 号：TU528[建筑科学—建筑技术科学]