THE INVESTIGATION OF PRESENT AGGREGATE GRADATION CONTROL PRACTICES AND THE DEVELOPMENT OF SHORT-CUT OR ALTERNATIVE TEST METHODS

This report covers the first phase of an investigation into current aggregate gradation control practies. It presents the results of a literature search and a survey of current testing procedures and sampling and testing frequencies for various aggregate uses. Summary information is presented on length and method of sample drying; size and number of sieves; length and method shaking; source of the sample (i.e. stockpile, truck, roadway, etc.); and who (producer or consumer) performs the test. Also included are recommendations as to testing and sampling frequencies based on theinformation gathered. Short-cut and alternative test methods for gradation determination are described, and those that offer promise of being a good substitute for the standard method will be further investigated and tested in the second phase of the study. /Author/

  • Supplemental Notes:
    • Sponsored by the Federal Highway Administration.
  • Corporate Authors:

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Richardson, E S
    • McClelland, R L
    • Rosenbaum, R E
    • Barger, R J
  • Publication Date: 1977-4

Media Info

  • Pagination: 115 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00172046
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-77- 53 Intrm Rpt., FCP 24F7024
  • Contract Numbers: Advice 42-40-G-3-08
  • Files: TRIS, USDOT
  • Created Date: Mar 29 1978 12:00AM