Publications / 2001 Proceedings of the 18th ISARC, Krakow, Poland

Development of a Laser-Based System for Testing Construction Aggregate

Hyoungkwan Kim, Carl T. Haas, Alan F. Rauch, Craig Browne
Pages 1-6 (2001 Proceedings of the 18th ISARC, Krakow, Poland, ISBN 9788386040117, ISSN 2413-5844)
Abstract:

A Laser-based Aggregate Scanning System (LASS) was developed at the University of Texas at Austin for rapid characterization of various properties of construction aggregates. For the determination of shape and size parameters, the ?virtual proportional caliper? and ?virtual sieve? concepts are introduced, where 3D particle data are rotated about different axes to find elongation and flatness ratios, and the smallest mesh opening size through which a particle can pass. This paper also proposes a group texture based quality control method using wavelet analysis. This method is expected to provide fast group characterization of aggregates during production, enabling real time quality Monitoring.

Keywords: aggregate, automation, group texture analysis, laser profiling, LASS, virtual proportional caliper, virtual sieve, wavelet analysis.