MECHANICAL BEHAVIOUR OF ASPHALT CONCRETE. NUMERICAL MODELS IN GEOMECHANICS. NUMOG III. PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM HELD AT NIAGARA FALLS, CANADA, 8-11 MAY 1989

This paper presents an elastic viscoelastic viscoplastic model of the mechanical behaviour of asphalt concrete. The mohr-coulomb yield criterion is used to describe viscoplastic behaviour. The model is an extension of the elastic viscoplastic model implemented in the plaxis program by scotman and vermeer in 1985. The uniaxial tests undertaken to develop the model are conducted on 100 X 200 mm cylindrical test specimens made from a single asphalt mixture of 60-80 penetration grade bitumen. The bitumen content is 6.7% in weight, and the average density of the samples is 23.5 kn per cubic metre. The following tests have been undertaken: (a) deformation controlled tests, in which the specimen is loaded under tension until failure occurs; and (b) relaxation tests. In these the sample is first deformed at a given rate for a fixed length of time, after which the deformation is stopped. The stress in the material then decreases until a minimum value is reached. Such tests provide a value for yield stress. The dependance of yield stress or yield strain upon variations such as temperature and rate of deformation, can then be defined. For the covering abstract of the conference see IRRD 824029.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/1851664254
• Corporate Authors:

  Elsevier Science Publishers

  Crown House, Linton Road
  Barking, Essex IG11 8JU,   England 
• Authors:
  • TROOST, E
• Publication Date: 1989

Language

• English

Media Info

• Pagination: p. 233-40
• Serial:
  • Publication of: Elsevier Applied Science Publishers Limited
  • Publisher: Elsevier Science Publishers

Subject/Index Terms

• TRT Terms: Bituminous mixtures; Concrete; Conferences; Deformation; Elasticity (Mechanics); Failure; Mathematical models; Plasticity; Stresses; Temperature; Viscosity
• Subject Areas: Data and Information Technology;

Filing Info

• Accession Number: 00497930
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 1-85166-425-4
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM