Research on the evaluation of color difference of concrete powder raw materials based on MATLAB method
RUI Yafeng
HUANG Tianyong
QIAN Chunxiang
Abstract：Using appearance quality evaluation method with MATLAB software programming to calculate color difference,this article explores the appearance color difference of cement,fly ash,and slag powder from different sources,analyzes the environmen-tal factors that affect appearance quality,as well as the influence of raw material composition on grayscale values.The results indi-cate that when collecting images of powder raw materials,it is necessary to ensure consistent external environment,including light intensity and collection height.There are significant differences in the appearance quality of cement and fly ash from different sources,with their average grayscale values ranging from 140 to 150 and 160 to 170,respectively.This is because the varying pro-duction processes of cement and fly ash result in substantial differences in the content of characteristic minerals,such as magne-sium oxide and iron oxide,leading to notable color variations.Therefore,it is possible to obtain raw materials with uniform color difference by controlling the composition of raw materials.Slag powder exhibits relatively greater uniformity due to its lower con-tent of mineral components that affect color.
Keywords：cementfly ashmineral powdercolor difference evaluationMATLAB software
Publication Date：2025-06-25
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 63-67,96 )