- Author
- Garboczi, E. J. | Cheok, G. S. | Stone, W. C.
- Title
- Using LADAR to Characterize the 3-D Shape of Aggregates: Preliminary Results.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Journal
- Cement and Concrete Research, Vol. 36, No. 6, 1072-1075, June 2006
- Keywords
- aggregates | concretes | lasers | x-ray tomography | rocks
- Identifiers
- laser detection and ranging (LADAR); measured (means) and numerical (num) values of volume, length, width and thickness for rocks 1 and 2
- Abstract
- Previous publications have shown how a combination of X-ray computed tomography and spherical harmonic series could be used to characterize the 3-D shape of rocks used for aggregates in concrete. The X-ray computed tomography was used to obtain the raw 3-D numerical data for the coordinates of the aggregate surface. In this paper, we demonstrate how laser detection and ranging (LADAR) numerical data can replace X-ray computed tomography data and be used in conjunction with spherical harmonic series analysis to analyze the 3-D shape of aggregates.