Work

Evaluation of three-dimensional morphological characteristics of recycled coarse aggregate

Year: 2025

Type: article

Abstract: This study focuses on the three-dimensional morphological characteristics of recycled coarse aggregate (RCA). Using 3D laser scanning and spherical harmonic function analysis, this study determines the optimal number of coordinate points for RCA across various Fuller gradation particle size ranges. A comprehensive assessment of RCA particle size parameters (3D size, volume, surface area) and shape parameters (sphericity, angularity, convexity) are conducted. Specifically, this study develops an innovative quantitative evaluation method for particle morphology based on the distribution characteristics in RCA particle shape parameters. Additionally, six distinct discrete element physical models with specific shape parameters are identified. These research results fill the research gap in RCA morphological analysis, offering parametric support for the construction of non-spherical geometrical models of RCA across different size ranges and contributing to the understanding of RCA properties for construction material applications.

Source: Journal of industrial safety.

DOI: 10.1016/j.jinse.2025.02.002

Authors: Lianjun Chen, Wenfeng Jia, Pengcheng Li, Gang Pan, Yang Zhang

Institutions: Shandong University of Science and Technology, Qingdao University of Technology

Language: English

Topic: Recycled Aggregate Concrete Performance

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

Open Access status: diamond

Funder: National Natural Science Foundation of China

Awards: G3534542026, G4539379463