AN EVALUATION OF THE BULK SPECIFIC GRAVITY FOR GRANULAR MATERIALS
ACCURATE DETERMINATION OF BULK SPECIFIC GRAVITY OF AGGREGATES IS OF PAVAMOUNT IMPORTANCE FOR SUCCESSFUL DESIGN OF BITUMINOUS PAVING MIXTURES AS WELL AS PORTLAND CEMENT CONCRETE. THE COMPLICATING ELEMENT IN SPECIFIC GRAVITY DETERMINATION IS THE ACHIEVEMENT OF SATURATED SURFACE-DRY CONDITIONS. THE VARIOUS MODIFICATIONS SUGGESTED BY SEVERAL INVESTIGATORS EITHER OFFER LITTLE IMPROVEMENT OR ARE TOO ELABORATE TO BE OF PRACTICAL VALUE IN THE FIELD OR COMMON LABORATORY. IN THIS STUDY, THE BULK SPECIFIC GRAVITIES OF CRUSHED AGGREGATES AND CYLINDRICAL ROCK CORES FROM SIX LIMESTONE QUARRIES, ONE SLAG, ONE CRUSHED TRAP ROCK, AND ONE SYNTHETIC AGGREGATE (SYNOPAL) WERE DETERMINED BY FIVE METHODS. THE METHODS ARE STANDARD ASTM, GEOMETRICAL MEASUREMENT, MERCURY DISPLACEMENT, AND TWO CHEMICAL INDICATOR METHODS PROPOSED BY THE AUTHORS. THE RESULTS BY THE STANDARD ASTM METHODS, IN TERMS OF REASONABLENESS AND REPEATABILITY, ARE COMPARED AND EVALUATED IN RELATION TO RESULTS BY THE OTHER FOUR METHODS. THE PROCEDURES OF THE PROPOSED CHEMICAL INDICATOR METHODS (COBALT CHLORIDE AND FLUORESCEIN SODIUM SALT) ARE DESCRIBED. THE REPEATABILITY AND REPRODUCIBILITY OF THE COBALT CHLORIDE INDICATOR METHOD ARE PRESENTED. /AUTHOR/
- Record URL:
-
Supplemental Notes:
- Paper sponsored by Committee on Mineral Aggregates and presented at the 49th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved
-
Authors:
- Kandhal, Prithvi S
- Lee, Dah-Yinn
- Publication Date: 1970
Media Info
- Media Type: Print
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 44-55
- Monograph Title: Synthetic aggregates and granular materials
-
Serial:
- Highway Research Record
- Issue Number: 307
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Aggregates; Artificial aggregates; Bituminous mixtures; Chemical tests; Chlorides; Cobalt; Crushed aggregates; Grain shape (Geology); Granular materials; Materials tests; Portland cement concrete; Specific gravity; Test procedures
- Uncontrolled Terms: Aggregate testing
- Old TRIS Terms: Cobalt compounds; Synopal
- Subject Areas: Geotechnology; Highways;
Filing Info
- Accession Number: 00217826
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Sep 21 1970 12:00AM