Quantitative study on particle shaping of recycled aggregate by multifractal spectrum

Abstract

In this study, the feasibility of quantifying the shaping effect of aggregate particles through multifractal spectrum analysis was explored, and the relationships between the amount, particle size, and shape of aggregates and the multifractal spectrum eigenvalues of aggregate images were experimentally investigated. Finally, the multifractal spectrum before and after the shaping of real aggregate particles was compared, and the following conclusions were obtained: the aggregate distribution image satisfies the multifractal characteristics; the greater the number of aggregates in the image, the greater the multifractal spectrum width; the larger the aggregate particle size, the smaller the multifractal spectrum width; the smoother the aggregate surface, the greater the multifractal spectrum width; the unit-pixel multifractal spectrum of the real aggregate is found with an increase of 47.1% in width after the shaping, suggesting that the multifractal spectrum eigenvalues can effectively quantify the aggregate shaping effect.