Abstract:
Research was undertaken using an innovative three-dimensional (3D) laser scanning tool to
study the shape and texture characteristics of road aggregate particles. Aggregate materials
used for road construction, including G1 crushed rocks of different geological origins, recycled
aggregate and alluvial gravel (not used as aggregate) were used for this study. Representative
samples were scanned using the laser system to collect 3D aggregate data for analyses and,
subsequently, develop comparative models. The objective was to arrange the aggregate
particles in a sequence based on their surface texture. Two models were proposed and key
aspects evaluated against each other. Ultimately, one model was selected that may be improved
and used for further research. The study found that, while it is possible to use the 3D aggregate
scan data to produce comparative models, distinguishing between particle shape and texture
proved a daunting task. It was also concluded that particle elongation must be considered as a
major influencing factor.
