CHARACTERIZING EXPANSIVE SOILS FOR AIRPORT PAVEMENT DESIGN
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.
- Sponsored by the Department of Transportation, Federal Aviation Administration.
University of New Mexico, AlbuquerqueEric H Wang Civil Engineering Research Facility
Albuquerque, NM United States 87131
- McKeen, R G
- Nielsen, J B
- Publication Date: 1978-8
- Features: Figures; References; Tables;
- Pagination: 119 p.
- TRT Terms: Bulk density; Clay; Compression tests; Pavement design; Soil suction; Soil types; Soil water; Soils; Subgrade (Pavements); Swelling; Swelling soils
- Uncontrolled Terms: Soil classification
- Old TRIS Terms: Soil compression tests; Soil swell
- Subject Areas: Geotechnology; Highways; Pavements;
- 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