AN IMPROVED PARTICLE INDEX TEST FOR THE EVALUATION OF GEOMETRIC CHARACTERISTICS OF AGGREGATES

PARTICLE INDEX TESTS ON FINE AGGREGATES HAVE INDICATED THAT THE RESULTS OF THESE TESTS REFLECT THE DISCERNIBLE GEOMETRIC CHARACTERISTICS OF THESE MATERIALS, AND THAT THE VALUES FOR THE NATURAL SANDS AND THE STONE SANDS ARE IN GOOD AGREEMENT, RESPECTIVELY, WITH THE GENERAL RANGES OF PARTICLE INDEX VALUES FOR THE GRAVEL AND CRUSHED STONE MATERIALS. THE RESULTS OF PARTICLE INDEX TESTS ON AGGREGATE MIXTURES INVOLVING PARTICLES OF DIFFERENT GEOMETRIC FEATURES HAVE SHOWN THAT THE INDEX VALUE OF A MIXTURE VARIES MORE OR LESS LINEARLY WITH THE PERCENTAGES OF THE TYPES OF PARTICLES IN THE MIXTURE, INDICATING THAT THE PARTICLE INDEX REFLECTS THE AVERAGE GEOMETRIC CHARACTERISTICS OF THE INDIVIDUAL PARTICLES COMPRISING THE THE SAMPLE. THE RESULTS OF THE ANGULARITY TEST, SHAPE FACTOR TEST, AND TIME INDEX TEST HAVE INDICATED THAT THEY ARE ALL RELATED TO THE PARTICLE INDEX VALUES OF THE AGGREGATE SAMPLES TESTED. HOWEVER, THE FACT THAT THE PARTICLE INDEX TEST MAY BE APPLIED TO A WIDER RANGE OF AGGREGATE MATERIALS THAN THE OTHER TESTS INDICATES ITS VERSATILITY AND SUPERIORITY AS A USEFUL TOOL FOR IDENTIFYING THE GEOMETRIC CHARACTERISTICS OF MINERAL AGGREGATES FOR PAVEMENT PURPOSES. /AUTHOR/

• Corporate Authors:

  Michigan Technological University, Houghton

  Department of Civil Engineering
  Houghton, MI  United States  49931
• Authors:
  • Huang, E Y
• Publication Date: 1965-7

Subject/Index Terms

• TRT Terms: Building materials; Crushed rock; Evaluation; Fine aggregates; Geometric configurations and shapes; Index tests; Mineral aggregates; Particles; Paving; Sand
• Old TRIS Terms: Aggregate mixture formulas; Geometric shapes; Natural sand fine aggregate
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00217559
• Record Type: Publication
• Report/Paper Numbers: 54 pp
• Files: TRIS
• Created Date: Jan 16 1994 12:00AM