INVESTIGATION OF COMPACTION CRITERIA FOR AIRPORT PAVEMENT SUBGRADE SOILS

A study was conducted to determine the effect of lowering soil density requirements for subgrades under airport pavements. The investigation was primarily a laboratory effort in which molded specimens of three different soil types, compacted to densities at and below those currently specified by FAA criteria, were subjected to repeated axial loadings in a triaxial compression chamber. The primary response parameters of interest were permanent and resilient axial strain. Test results were formulated into a statistical model to predict permanent soil strain based on soil characteristics such as density, clay content, compaction characteristics, and shear strength. The strain model was used to calculate values of permanent soil deformation at the surface of the subgrade for various combinations of soil density. Results of the test indicated that the wide variation in soil response among the three materials tested precluded any general alteration in current FAA compaction criteria. (FHWA)

  • Corporate Authors:

    U.S. Army Waterways Experiment Station

    3909 Halls Ferry Road
    Vicksburg, MS  United States  39180-6199

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • BRABSTON, W N
  • Publication Date: 1981-10

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 174 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00345777
  • Record Type: Publication
  • Report/Paper Numbers: DOT/FAA/RD-81/48 Final Rpt.
  • Contract Numbers: DOT FA78WAI-876
  • Files: TRIS, USDOT
  • Created Date: Feb 27 1982 12:00AM