FATIGUE OF BITUMINOUS MATERIALS IN FLEXIBLE PAVEMENTS

THE RESULTS OF VARIOUS CONTROLLED STRESS AND STRAIN TESTS ARE CONSIDERED. IT IS SHOWN THAT STIFFNESS PLAYS A PREDOMINANT ROLE IN DETERMINING FATIGUE BEHAVIOR, AND THAT MAXIMUM PRINCIPAL STRAIN IS A GOOD CRITERION OF CRACK INITIATION. THE EFFECT OF MIX VARIABLES SUCH AS AGGREGATE TYPE AND GRADING, FILLER CONTENT, BINDER TYPE, VISCOSITY AND CONTENT, AND DEGREE OF COMPACTION ALL AFFECT THE STIFFNESS, BITUMEN CONTENT, AND VOIDS CONTENT OF BITUMINOUS MIXTURES. IT APPEARS THAT IN ORDER TO OBTAIN MAXIMUM FATIGUE LIFE FOR CRACK INITIATION, THE QUANTITIES OF FILLER AND BINDER IN A MIX SHOULD BE SUCH THAT A CONDITION OF MAXIMUM STIFFNESS ASSOCIATED WITH MINIMUM VOIDS IS PRODUCED. /TRRL/

• Authors:
  • Pell, P S
• Publication Date: 1971-8

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 17-23
• Serial:
  • Institution of Highway Engineers, Journal of
  • Volume: 18
  • Issue Number: 8
  • Publisher: Industrial Newspaper Limited

Subject/Index Terms

• TRT Terms: Binder content; Bituminous mixtures; Durability; Fatigue (Mechanics); Flexible pavements; Fracture mechanics; Loads; Mix design; Pavements; Stiffness; Strain (Mechanics); Stresses
• Uncontrolled Terms: Loading
• Old TRIS Terms: Strains
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00211299
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: TRIS
• Created Date: Apr 8 1973 12:00AM