CHARACTERIZATION OF GRANULAR MATERIALS FOR PAVEMENTS

For design and analysis of flexible pavements, a simple elastic model that does not require cumbersome calculation and also can rank materials according to their performance is clearly desirable. Early studies indicated that the resilient modulus of a granular material can be taken to be a function of the first invariant of stress, theta, although there is evidence that it is also dependent on the repeated deviator stress, q sub r. The limitations of some earlier models are discussed herein and a simple model for granular materials is proposed. The model is empirical in nature and based on repeated load triaxial testing with constant confining pressure. The application of this model in situations where the confining pressure is pulsed in phase with the deviator stress is also discussed.

• Corporate Authors:

  National Research Council of Canada

  Research Journals
  Ottawa, Ontario K1A 0R6,   Canada 
• Authors:
  • Nataatmadja, A
  • Parkin, A K
• Publication Date: 1989-11

Media Info

• Features: Figures; References;
• Pagination: p. 725-730
• Serial:
  • CANADIAN GEOTECHNICAL JOURNAL
  • Volume: 26
  • Issue Number: 4
  • Publisher: National Research Council of Canada

Subject/Index Terms

• TRT Terms: Accelerated tests; Base course (Pavements); Confining pressure; Flexible pavements; Granular materials; Mathematical models; Modulus of resilience; Properties of materials; Repeated loads; Triaxial shear tests
• Uncontrolled Terms: Materials characterization
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00491986
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 31 1990 12:00AM