NON-LINEAR AGGREGATE BEHAVIOUR IN FLEXIBLE PAVEMENTS

High stresses occur at the top of a pavement under traffic loading and decrease with depth in the pavement due to the load-spreading action of the pavement layers. Thus the stiffness of unbound aggregates which form pavement layers will also vary as a result of that material's non-linearity. The influence of this variation is demonstrated by means of calculations made with a non-linear finite element analysis program. Changes in aggregate type and in other pavement layers are shown to significantly affect aggregate behaviour and, hence, pavement performance. (A) For the covering abstract see IRRD 890992.

• Corporate Authors:

  Nottingham University, England

  Department of Civil Engineering
  Nottingham NG9 3FQ,   England 
• Authors:
  • PLAISTOW, L
  • Dawson, A R
• Conference:
  • UNBOUND AGGREGATES IN ROADS. PROCEEDINGS OF THE FOURTH INTERNATIONAL SYMPOSIUM ON UNBOUND AGGREGATES IN ROADS (UNBAR4) HELD 17TH-19TH JULY 1995, UNIVERSITY OF NOTTINGHAM
• Publication Date: 1995

Language

• English

Media Info

• Features: References;
• Pagination: p. 141-50

Subject/Index Terms

• TRT Terms: Aggregates; Base course (Pavements); Conferences; Deformation; Elasticity (Mechanics); Finite element method; Mathematical models; Stresses
• Uncontrolled Terms: Unbound base
• ITRD Terms: 4577: Aggregate; 8525: Conference; 5595: Deformation; 5912: Elasticity; 6490: Finite element method; 6473: Mathematical model; 5575: Stress (in material); 2970: Unbound base
• Subject Areas: Data and Information Technology; Geotechnology; Highways;

Filing Info

• Accession Number: 00740931
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Oct 30 1997 12:00AM