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  United States  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

• TRT Terms: Aggregate gradation; Control; Crash investigation; Sampling; Sieves; Studies; Surveys; Test procedures; Testing
• Subject Areas: Geotechnology; Highways; Safety and Human Factors;

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