Innovative Testing System of Construction Aggregate Using Laser Profiling

A Laser-based Aggregate Scanning System (LASS) is being developed at The University of Texas at Austin. Using a computer-controlled linear motion slide, a laser line scanner is moved over aggregates spread out on a scanning bed to rapidly gather accurate, three-dimensional data. To analyze the raw data effectively, morphological methods and a group texture analysis method are suggested. In the morphological approach, the aggregate properties of particle size and shape are pursued. The group texture analysis method is suggested as a means to characterize collections of aggregate particles.