FATIGUE OF ASPHALT PAVEMENTS . THIRD INTERNATIONAL CONFERENCE ON BEARING CAPACITY OF ROADS AND AIRFIELDS. PROCEEDINGS, NORWEGIAN INSTITUTE OF TECHNOLOGY, TRONDHEIM, NORWAY, JULY 3-5 1990. VOLUMES 1-2

This paper presents some results of the fatigue testing of asphalt pavements at the Norwegian Road Research Laboratory. The following types of laboratory fatigue test equipment were used: (1) a four-point repeated bending apparatus (FPB); (2) a centre point loaded beam on a rubber base (CPB); (3) an indirect tensile test apparatus (ITT). Normally, the fatigue testing was performed at 5 degrees Centigrade, corresponding to asphalt temperature during the spring when fatigue conditions are critical for many pavement structures. To establish the fatigue curves, at least 6 specimens were tested at different strain or stress levels. Fatigue criteria were established for several wearing and base course mixes, commonly used in Norway. The effects of load, environmental and mix variables were established. It was found that: (1) the stiffness determined by ITT seems to depend strongly on the applied static and dynamic stress; (2) flexural stiffness usually depends on stress; (3) for most mixes, the observed fatigue life differs significantly for constant stress and for strain loadings; (4) strain and stiffness explain most of the variation in fatigue life; (5) synthetic grid reinforcements do not prolong fatigue life; (6) FPB and CPB gave almost identical fatigue curves, but ITT had steeper curves. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/8251910331
• Corporate Authors:

  Tapir

  Trondheim University, Gloeshaugen
  Trondheim-NTH,   Norway 
• Authors:
  • MYRE, J
• Publication Date: 1990

Language

• English

Media Info

• Features: References;
• Pagination: p. 703-714
• Serial:
  • Publication of: Tapir Publishers
  • Publisher: Tapir

Subject/Index Terms

• TRT Terms: Asphalt pavements; Bearing capacity; Conferences; Deflection; Fatigue (Physiological condition); Pavements; Stiffness; Strain (Mechanics); Stresses; Tension tests; Testing
• Uncontrolled Terms: Indirect tensile test
• Old TRIS Terms: Pavement deflection; Strains
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00612302
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 82-519-1033-1
• Files: ITRD, TRIS
• Created Date: Aug 31 1991 12:00AM