COMPARISON TESTS OF AUTOMATED EQUIPMENT FOR ANALYZING AGGREGATE GRADATION

A number of automated test machines are commercially available for rapidly determining the grain size distribution of unbound aggregates. Designed to provide a faster alternative to standard sieve analyses, these machines capture and analyze digital images of the aggregate particles to determine gradation. Five of these test machines were evaluated for accuracy and performance using fifteen select samples of aggregate with different size, shape, and mineral characteristics. In this paper, several key issues in evaluating these machines are considered, including their accuracy when compared to standard sieve analyses.

• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  University of Texas, Austin

  International Center for Aggregates Research, 3208 Red River
  Austin, TX  United States  78705-2650

  Texas A&M University, College Station

  Faculty Exchange Box H
  College Station, TX  United States  77843
• Authors:
  • Browne, C
  • Rauch, A F
  • Haas, C T
  • Kim, H Y
• Conference:
  • International Center for Aggregates Research 9th Annual Symposium: Aggregates - Concrete, Bases and Fines
  • Location: Austin, Texas
  • Date: 2001-4-22 to 2001-4-25
• Publication Date: 2001

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 16p

Subject/Index Terms

• TRT Terms: Accuracy; Aggregate gradation; Analysis; Automation; Distributions (Statistics); Equipment; Evaluation; Grain size (Geology); Minerals; Performance; Shape; Sieve analysis; Tests
• Candidate Terms: Imaging systems
• Uncontrolled Terms: Unbound aggregates
• Subject Areas: Geotechnology; Highways; I36: Aggregates;

Filing Info

• Accession Number: 00983558
• Record Type: Publication
• Report/Paper Numbers: Final Draft
• Files: TRIS
• Created Date: Dec 23 2004 12:00AM