ESTIMATION OF FATIGUE LIFE OF ASPHALT PAVEMENT. SIXTH INTERNATIONAL CONFERENCE, STRUCTURAL DESIGN OF ASPHALT PAVEMENTS, VOLUME I, PROCEEDINGS, UNIVERSITY OF MICHIGAN, JULY 13-17, 1987, ANN ARBOR, MICHIGAN

In this study, a new fatigue failure criterion of asphalt mixes presented, based on the energy dissipation theory. When the mix stiffness modulus is low, fatigue test data cannot be obtained from laboratory cyclic bending test, thus the phase angle between the stress and the strain sinusoidal waves is measured, employing the cyclic wheel tracking test, and the new fatigue failure criterion is proposed which is valid for the wide range of mix stiffness modulus, estimating the energy dissipation in the mix. Examining the new criterion, it is found that bending fatigue damage at bottom of the mix slab is comparatively large in spring and can be ignored in winter and summer. It was also found that fatigue failure can initiate at top of the mix slab, when the mix stiffness modulus is low. A new system to predict the load associated pavement fatigue life considers the external factors affecting the life, such as wheel load, transverse wheel position, pavement temperature, as random variables. In the system, pavement fatigue failure is assumed to initiate at both top and bottom of the slab, and the shorter one of the predicted lives is defined as its fatigue life. From the results of case studies applied for Japan national highways, the predicted lives were found to correspond well with field data obtained by government agency.

• Corporate Authors:

  University of Michigan, Ann Arbor

  Department of Civil Engineering
  Ann Arbor, MI  United States  48109
• Authors:
  • Himeno, K
  • WATANABE, T
  • MARUYAMA, T
• Publication Date: 1987

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 272-289
• Serial:
  • Publication of: Michigan University, Ann Arbor
  • Publisher: University of Michigan, Ann Arbor

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt pavements; Conferences; Dissipation; Estimating; Failure; Fatigue (Mechanics); Modulus; Stiffness
• Uncontrolled Terms: Fatigue life
• Subject Areas: Design; Energy; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00485492
• Record Type: Publication
• Files: TRIS
• Created Date: Jul 31 1989 12:00AM