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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Supplemental Notes:
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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
- TRT Terms: Granular bases; Laboratory tests; Modulus of resilience; Pavement layers; Pavement performance; Soils; Specimens; Subbase materials; Synthetics; Test procedures; Testing
- Identifier Terms: Long-Term Pavement Performance Program; Strategic Highway Research Program
- Old TRIS Terms: Unbound pavement courses
- Subject Areas: Geotechnology; Highways; Pavements; I23: Properties of Road Surfaces; I42: Soil Mechanics;
Filing Info
- Accession Number: 00667538
- Record Type: Publication
- Report/Paper Numbers: SHRP-P-693
- Files: TRIS, TRB
- Created Date: Oct 29 1994 12:00AM