DEVELOPMENT OF TESTING PROCEDURES AND A METHOD TO PREDICT FATIGUE FAILURE OF ASPHALT CONCRETE PAVEMENT SYSTEMS

THE FATIGUE PHENOMENA ARE CONSIDERED AS A PROCESS OF INITIATION AND GROWTH OF CRACKS WITHIN ASPHALTIC SYSTEMS. IT IS ASSUMED THAT IN PAVING MIXTURES, FATIGUE DAMAGE IS INITIATED AS THE FIRST LOADING CYCLE. THE FATIGUE LIFE CAN THEN BE CONSIDERED AS THE NUMBER OF CYCLES OF REPEATED LOADING, TO PROPAGATE THE INITIAL FLOW INTO A NUMBER OF CRACKS OF CRITICAL DIMENSIONS. A CRACK PROPAGATION LAW, IN WHICH THE RATE OF CRACK GROWTH IS RELATED TO STRESS-INTENSITY FACTORS AND MATERIAL CONSTANTS, IS PRESENTED. THE CONCEPTS OF FRACTURE MECHANICS ARE DISCUSSED. THE RESULTS OF PREVIOUS STUDIES ON CRACKING OF SIMPLY SUPPORTED ASPHALTIC BEAMS ARE REVIEWED. DETAILED EXPERIMENTAL AND THEORETICAL RELATIONS FOR ANALYSIS OF CRACK GROWTH IN BEAMS SUPPORTED ON ELASTIC FOUNDATION ARE ALSO PRESENTED. A COMPUTER PROGRAM FOR CALCULATION OF STRESS INTENSITY FACTORS FOR CRACKED BEAMS ON ELASTIC FOUNDATION, USING BOUNDARY COLLOCATION METHOD, IS DEVELOPED AND PRESENTED IN THE APPENDIX. THE VALIDITY OF POSTULATED CONCEPTS FOR SAND ASPHALT AND AN ASPHALTIC CONCRETE MIXTURE IS DISCUSSED. THE METHOD OF ANALYSIS, BASED ON THE FRACTURE MECHANICS, IS EXTENDED TO A 3-DIMENSIONAL PAVEMENT SYSTEM CONSISTING OF A SLAB RESTING ON ELASTIC FOUNDATION. DETAILED MATERIAL CHARACTERIZATION OF THE PAVEMENT MODEL HAS BEEN CARRIED OUT AND PRESENTED IN THE APPENDIX. /AUTHOR/

  • Corporate Authors:

    Ohio State University, Columbus

    190 North Oval Drive
    Columbus, OH  USA  43210

    Ohio Department of Highways

    Columbus, OH  USA  43210

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Authors:
    • Majidzadeh, K
    • Ramsamooj, D V
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00210462
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Contract Numbers: DOT-FH-11-7281
  • Files: TRIS, USDOT
  • Created Date: Aug 8 1971 12:00AM