TYPE II UNBOUND COHESIVE SUBGRADE SOIL SYNTHETIC REFERENCE SAMPLE PROGRAM

Strategic Highway Research Program (SHRP) Protocol 46, "Resilient Modulus of Unbound Granular Base/Subbase Materials and Subgrade Soils", was the specified procedure for laboratories performing resilient modulus test on research samples of unbound cohesive subgrade soil obtained from Long-Term Pavement Performance (LTPP) field sites. P46 requires a test system that includes a triaxial pressure cell component, a closed loop electro-hydraulic repeated load component, and certain load and specimen response control, measurement, and recording components. Two elements of P46 testing were particularly important: verification that the system was calibrated and yielding reasonable results and a practical means of performing quality checks on a daily or more frequent basis. A set of three synthetic reference samples was acquired, instructions for testing were prepared, and the set was circulated to 14 LTPP laboratories for testing. Worksheets, supporting data, analyses, final comments, and conclusions are presented.

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  • Corporate Authors:

    Strategic Highway Research Program

    National Research Council, 2101 Constitution Avenue, NW
    Washington, DC  United States  20418
  • Authors:
    • Steele, G W
    • Antle, C E
    • Anderson, D A
  • Publication Date: 1994-8

Language

  • English

Media Info

  • Features: Appendices; Figures; Tables;
  • Pagination: 26 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00667538
  • Record Type: Publication
  • Report/Paper Numbers: SHRP-P-693
  • Files: TRIS, TRB
  • Created Date: Oct 29 1994 12:00AM