DEFORMATION CHARACTERIZATION OF SUBGRADE SOILS FOR HIGHWAYS AND RUNWAYS IN NORTHERN ENVIRONMENTS

Roads and runways in northern Canada often must carry exceptional heavy loads. In order to design for these loads, a procedure has been developed which enables the prediction of fatigue life of pavements. Experimental evidence indicates that the definition of resilient deformation, which controls fatigue life of pavements, can be resolved in terms of stress state variables. The resilient modulus is defined in terms of (01 - 03), (03 - ua), and (ua - uw) which is applied in a theoretical analysis. Typical forms of the constitutive relationships are presented. The effect of freeze-thaw cycles does not appear to produce significant hysteresis in the constitutive relationships. /TRRL/

• Corporate Authors:

  National Research Council of Canada

  1200 Montreal Road
  Ottawa, Ontario  Canada  K1A 0R6
• Authors:
  • FREDLUND, D G
  • Bergan, A T
• Publication Date: 1975-5

Language

• English

Media Info

• Features: Figures; References;
• Pagination: p. 213-223
• Serial:
  • CANADIAN GEOTECHNICAL JOURNAL
  • Volume: 12
  • Issue Number: 2
  • Publisher: National Research Council of Canada

Subject/Index Terms

• TRT Terms: Airport runways; Bearing capacity; Coefficient of subgrade reaction; Deformation; Durability; Forecasting; Freeze thaw durability; Freezing; Hysteresis; Mechanical fatigue; Modulus of elasticity; Pavement design; Pavement subgrade; Pavements; Polar regions; Strength of materials; Stresses; Structural strengthening; Thaw
• Uncontrolled Terms: Fatigue life; Freeze thaw cycles
• Geographic Terms: Arctic Regions; Canada
• Old TRIS Terms: Arctic area
• ITRD Terms: 3085: Bearing capacity; 8018: Canada; 5787: Coefficient of subgrade reaction; 5595: Deformation; 5910: Durability; 5579: Fatigue (mater); 132: Forecast; 2577: Freezing thawing cycle; 5919: Modulus of elasticity; 3055: Pavement design; 8134: Polar regions; 3096: Strengthening (pavement); 5575: Stress (in material); 2950: Subgrade
• Subject Areas: Design; Geotechnology; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00133741
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Jun 23 1976 12:00AM