FATIGUE BEHAVIOR OF CONVENTIONAL AND RATIONALLY DESIGNED BITUMINOUS MIXES ON SIMULATED SUBGRADE

Three dense bituminous mixes were designed by a method that takes into consideration the shape, size, size distribution, and surface texture of mineral aggregates and boundary condition of the mold. Laboratory investigation into the fatigue properties of these mixes were carried out on slab specimens having a thickness of the same order of the wearing course. A simulated subgrade, based on the Westergaard assumption, was designed to support the slab specimens subjected to a constant nonreversed stress type of loading. The effect of variables such as the binder content, shape of coarse aggregate, rate of deformation, and initial vertical deflection on the fatigue life of slab specimens was investigated. Life of the mixes can be predicted from either the initial deflection of the specimen, the rate of increase in this deflection, or both. Fatigue life correlated very well with these two variables combined. The experimental results showed that the fatigue strength of the three rationally designed mixes was superior to that of the B.S. 594 wearing course mix made of the same type of stone.

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/trr/1975/549/549-002.pdf
• Summary URL:
  • https://scholar.google.com/scholar_lookup?title=FATIGUE+BEHAVIOR+OF+CONVENTIONAL+AND+RATIONALLY+DESIGNED+BITUMINOUS+MIXES+ON+SIMULATED+SUBGRADE&author=R.+SHARIF&publication_year=1975
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309024544
• Supplemental Notes:
  • Publication of this paper sponsored by Committee on Characteristics of Bituminous Paving Mixtures to Meet Structural Requirements. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
• Authors:
  • SHARIF, R L
• Conference:
  • 54th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia
  • Date: 1975-1-13 to 1975-1-17
• Publication Date: 1975

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 15-25
• Monograph Title: Bituminous Mixtures, Aggregates, and Pavements
• Serial:
  • Transportation Research Record
  • Issue Number: 549
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Aggregates; Aggregates by shape and surface texture; Binder content; Bituminous mixtures; Boundary value problems; Deflection; Deformation; Forming; Laboratory tests; Load tests; Mechanical fatigue; Mineral aggregates; Mix design; Pavement subgrade; Pavement wearing course; Specimens; Texture; Thickness
• Uncontrolled Terms: Aggregate shape; Aggregate size; Boundary conditions; Fatigue life; Particle size distribution
• Old TRIS Terms: Molds (Forming)
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00129483
• Record Type: Publication
• ISBN: 0309024544
• Files: TRIS, TRB
• Created Date: Mar 10 1976 12:00AM