VERIFICATION OF FRACTURE MECHANICS CONCEPTS TO PREDICT CRACKING OF FLEXIBLE PAVEMENTS

A REVIEW OF THE STATE OF ART OF APPLICATION OF FRACTURE MECHANICS CONCEPTS TO THE PREDICTION OF FATIGUE CRACKING OF BITUMINOUS MIXTURES IS PRESENTED. THE BASIC PRINCIPLES OF FRACTURE MECHANICS AND THE METHODS OF ANALYSIS OF CRACKED PLATES RESTING ON ELASTIC FOUNDATION ARE DISCUSSED. ANALYTICAL AND EXPERIMENTAL METHODS OF DETERMINATION OF STRESS-INTENSITY FACTOR FOR TWO-DIMENSIONAL AND THREE- DIMENSIONAL SYSTEMS USING PLATE BENDING ANALYSIS, FINITE ELEMENT AND BOUNDARY COLLECTION PROGRAMS ARE PRESENTED. THE EXPERIMENTAL WORKS CONSISTING OF TESTING OF SAND ASPHALT BEAMS AND SLABS RESTING ON ELASTIC FOUNDATION ARE PRESENTED. THE EXPERIMENTS WERE CONDUCTED TO VERIFY THE APPLICABILITY OF FRACTURE MECHANICS TO ESTIMATE THE FATIGUE LIFE OF ASPHALTIC MIXTURES SUBJECTED TO LOADS OF VARIABLE AMPLITUDE, PATTERN, HIGH STRESS LEVELS, AND VARIOUS TEMPERATURE CONDI- TIONS. THE EXPERIMENTAL RESULTS INDICATE THAT CRACKING CRACKING PROPAGATION PROCESS OF ASPHALTIC MIXTURES CAN BE PREDICTED USING THE POWER LAW RELATION BETWEEN THE CRACK GROWTH RATE AND THE STRESS-INTENSITY FACTOR. A FRAMEWORK FOR THE RATIONAL METHOD OF ANALYSIS OF PAVEMENT FATIGUE USING FRACTURE MECHANICS PRINCIPLES IS PRESENTED. AVAILABLE EXPERIMENTAL DATA ON FULL-SCALE PAVEMENT IS USED TO SHOW THE APPLICABILITY OF THE CONCEPTS DEVELOPED TO ANALYSIS IN- SERVICE PAVEMENT STRUCTURES. /FHWA/

  • Corporate Authors:

    Ohio State University, Columbus

    Department of Civil Engineering
    Hitchcock Hall 470
    Columbus, OH  USA  43210
  • Authors:
    • Majidzadeh, K
    • Kauffmann, E M
    • Chang, C W
  • Publication Date: 1973-6

Media Info

  • Pagination: 358 p.

Subject/Index Terms

  • Subject Areas: Highways; Materials;

Filing Info

  • Accession Number: 00210502
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-73- 91 Final Rpt., FCP 35C3-051
  • Contract Numbers: FH-11-7703
  • Files: TRIS, USDOT
  • Created Date: Jul 16 1976 12:00AM