Virtual CT analysis of pore structure in DEM-generated granular media: Application to porous asphalt

Key Points

• The aim is to determine how voxel resolution affects the quantification of pore structure in granular media.
• Analyzed the pore structure of DEM-generated granular media using virtual CT methods.
• Evaluated how voxel resolution influences the detection of pore features and overall properties.
• At coarse resolution, global properties stabilize while pore-scale details remain inconsistent.
• Improved resolution increases pore detection accuracy but leads to an increase in over-segmentation issues.
• Identified an optimal voxel size that balances accuracy, particle scale, and associated costs.