As a result of laboratory tests conducted to find reliable, rapid procedure for categorizing expansive soils, three are recommended, each developed through correlations with soil compressibility with respect to section changes (the best indication of potential swelling of soils): measurement of bulk density change in natural soil clods, determination of clay content, or determination of moisture suction relationship with particular attention to aggregation. Actual activity will depend on imposed loads, initial suction, and final suction. The major obstacle to satisfactory development of this system remains the relation between differential heave of airport pavement subgrades and pavement roughness, which will be addressed in future research. In the interim, the best available criteria (despite their limitations) are those developed for residential concrete slabs on expansive soils.

  • Supplemental Notes:
    • Sponsored by the Department of Transportation, Federal Aviation Administration.
  • Corporate Authors:

    University of New Mexico, Albuquerque

    Eric H Wang Civil Engineering Research Facility
    Albuquerque, NM  United States  87131
  • Authors:
    • McKeen, R G
    • Nielsen, J B
  • Publication Date: 1978-8

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 119 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00184747
  • Record Type: Publication
  • Source Agency: Federal Aviation Administration
  • Report/Paper Numbers: FAA-RD-78-59 Intrm Rpt.
  • Contract Numbers: DOT-FA75WAI-531
  • Files: TRIS, USDOT
  • Created Date: Jan 13 1979 12:00AM