Comprehensive Evaluation of AIMS Texture, Angularity, and Dimension Measurements

Published

July 3, 2009

Author(s)

Enad M. Mahmoud, Leslie L. Gates, Eyad A. Masad, Sinan T. Erdogan, Edward Garboczi

Abstract

Aggregates are the most widely used construction materials in the world in structures built from both asphaltic and portland cement concrete composites. The performance of these composites is affected by aggregate shape characteristics (e.g., angularity, texture, dimensions). The Aggregate Imaging System (AIMS) is a computer automated system that was developed to measure aggregate shape characteristics using digital camera images of aggregates. This paper addresses four issues concerning AIMS measurements: (1) enhanced ways of handling and classifying the large datasets typically generated, (2) enhanced automation in processing fine aggregate images that appear to contain touching particles, (3) an improved consideration of measurement variability or repeatability between different operators, different AIMS units, and for aggregate placement and orientation, and (4) comparison of AIMS dimensional measurements with true 3-D dimensional measurements using X-ray tomography on a large coarse aggregate dataset. The various aggregate sets used in this study covered a broad range of angularity and texture. The AIMS measurements of the ratios of dimensions were found to have excellent agreement with the more accurate X-ray tomography values, but the measurements of the individual dimensions were systematically low by about 10 %.

Citation

Cement and Concrete Research

Volume

22

Issue

4

Pub Type

Journals

Download Paper

https://doi.org/10.1061/(ASCE)MT.1943-5533.0000033

Local Download

Keywords

Aggregate, Texture, Angularity, Imaging, X-Ray tomography, Material Technology

Citation

Mahmoud, E. , Gates, L. , Masad, E. , Erdogan, S. and Garboczi, E. (2009), Comprehensive Evaluation of AIMS Texture, Angularity, and Dimension Measurements, Cement and Concrete Research, [online], https://doi.org/10.1061/(ASCE)MT.1943-5533.0000033, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=900979 (Accessed March 13, 2025)