NCHRP Project 10-84: Modulus-Based Construction Specification for Compaction of Earthwork and Unbound Aggregate

The objective of this research is to develop a modulus-based construction specification for acceptance of compaction that considers the following constraints: (1) Specification should be based on field measurement of modulus and moisture content; (2) Acceptance criteria should be correlated with design moduli; (3) Specification should provide a single, straightforward, and well-defined method for determining modulus that is compatible with a variety of compacted geomaterials; (4) Specification should be founded on a comprehensive literature review on the long-term behavior of various geomaterials in terms of the principles of unsaturated soil mechanics; (5) Seasonal variation of modulus of compacted geomaterials should be directly accounted for in establishing the specification criteria and limits for compaction; (6) Available models, devices, and methods, as defined in the literature, including NCHRP Synthesis 382, should be incorporated in the specification; and (7) The validity and practicality of the proposed specification should be documented based on shadow specification of a number of actual construction projects.


    • English


    • Status: Active
    • Contract Numbers:



    • Sponsor Organizations:

      National Cooperative Highway Research Program

      Transportation Research Board
      500 Fifth Street, NW
      Washington, DC  USA  20001

      Louisiana Department of Transportation

      P.O. Box 94245
      1201 Capitol Access Road
      Baton Rouge, LA  USA  70804-9245
    • Project Managers:

      King, Bill

    • Performing Organizations:

      Louisiana Transportation Research Center

      4101 Gourrier Avenue
      Baton Rouge, LA  USA  70808
    • Principal Investigators:

      Mohammad, Louay

    • Start Date: 20101007
    • Actual Completion Date: 20130406
    • Source Data: RiP Project 29199

    Subject/Index Terms

    Filing Info

    • Accession Number: 01465921
    • Record Type: Research project
    • Source Agency: Louisiana Transportation Research Center
    • Contract Numbers: 30000260, 11-4B
    • Files: RiP, STATEDOT
    • Created Date: Jan 3 2013 3:07PM