Estimating relative density of sand using particle configuration parameters from soil assembly image
Year: 2025
Type: article
Abstract: This study presents a new approach for estimating the relative density (D R ) of sand using particle configuration parameters from soil images. Focus was on utilizing soil assembly images depicting particles in group configuration. Soil images at various D R were prepared and adopted to analyze the assembly and shape configurations. The values of particle diameter (d), perimeter (p) and total perimeter (p tot ) obtained from soil assembly images at different D R were evaluated and compared with those of individual bulk particles. As D R increased, d and p decreased, while p tot remained similar. The sphericity (S) and roundness (R) of soil assemblies in group configuration were evaluated. It was found that S was smaller than for bulk particles, whereas R was similar. The number of particles (NoP) from soil assembly images was newly introduced as an indicator to volume characteristics. Through the correlation analysis, a close relationship of D R , p tot and NoP was found, where p tot increased linearly with NoP. Based on this finding, a unified correlation model utilizing combined parameters of p tot and NoP was established for estimating D R . Verification tests were additionally conducted using different types of sands, confirmed the validity and efficacy of the proposed image-based D R estimation method.
Source: Scientific Reports
Authors: Jonghyeog Yoon, Junhwan Lee
Institution: Yonsei University
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W4410243398