Acquiring, Analyzing, and Using Complete Three-Dimensional Aggregate Shape Information

Published

April 1, 2001

Author(s)

Edward J. Garboczi, Nicos Martys, H A. Saleh, Richard A. Livingston

Abstract

The shape of aggregates, from whatever source, plays a crucial role in determining the properties of the composite material in which they are embedded (e.g., asphaltic or portland cement concrete). To properly characterize this three-dimensional shape, three-dimensional information is needed. We show how this kind of information can be acquired via x-ray computed tomography. Mathematical burning algorithms can be applied to a multi-aggregate image to extract individual particles of various sizes. A spherical harmonic mathematical analysis can then be used to completely characterize the three-dimensional shape of each extracted aggregate. This real shape information can then be incorporated into algorithms for simulating the rheology of suspensions (fresh concrete or other materials) and into algorithms for simulating the structure of portland cement concrete.

Proceedings Title

Aggregates, Concrete, Bases and Fines, 9th Annual Symposium of the International Center of Aggregate Research

Conference Dates

April 22-25, 2001

Conference Title

International Center for Aggregate Research

Pub Type

Conferences

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Keywords

aggregate, concrete, rheology, shape, spherical harmonic, suspensions, x-ray computed tomography

Citation

Garboczi, E. , Martys, N. , Saleh, H. and Livingston, R. (2001), Acquiring, Analyzing, and Using Complete Three-Dimensional Aggregate Shape Information, Aggregates, Concrete, Bases and Fines, 9th Annual Symposium of the International Center of Aggregate Research, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860347 (Accessed October 7, 2024)