Expansive soil subgrades exhibit volume changes with variation in moisture condition. These changes result in differential movement of airport pavements resting on these soils. Special design procedures must be used to account for the expansive soil activity during equilibration. In addition, special precautions are required to protect the subgrade from moisture variation with climate. Measurement of soil suction is a key step in quantifying moisture-induced soil behavior. Procedures are outlined for suction characterization of the soil and for estimating the in situ differential movement likely to occur under the pavement. Once the wavelength and amplitude characteristics of the differential movement are obtained, design calculations to select the thickness and materials for the pavement may proceed.

  • Corporate Authors:

    New Mexico Engineering Research Institute

    New Mexico University, P.O. Box 25
    Albuquerque, NM  United States  87131

    Federal Aviation Administration

    Systems R&D Service, 800 Independence Avenue, SW
    Washington, DC  United States 
  • Authors:
    • McKeen, R G
  • Publication Date: 1981-1

Media Info

  • Pagination: 198 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00346102
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NMERI-AP-37 Final Rpt., FAA/RD-81/25
  • Contract Numbers: F29601-76-C-0015
  • Files: NTIS, TRIS, USDOT
  • Created Date: Dec 22 1982 12:00AM