EVALUATION OF PAVEMENT IN FLORIDA BY USING THE FALLING- WEIGHT DEFLECTOMETER

A method is presented by which mechanical properties of a pavement system can be determined by using nondestructive test methods that are now available. The ultimate goal is the establishment of rehabilitation criteria for existing flexible pavements that use purely analytical (as opposed to empirical) relationships. More specifically, the use of the falling-weight deflectometer (FWD) is discussed. Several sections of Interstate 75 in Florida were chosen in order to determine material characteristics of the pavement layers. These sections were also tested with the Dynaflect apparatus. Data developed from the FWD and Dynaflect deflections were accumulated and elastic moduli for the typical section were determined by using a computer program developed at the Florida Department of Transportation: in situ stress-dependent elastic moduli, four layers (ISSEM4). The elastic moduli were then compared with other test results, and a good correlation was indicated. How such mechanical properties may be used in an appropriate structural analysis to better locate and control distress parameters in the pavement system is outlined. Such analysis is possible from the knowledge obtained in situ of the various structural layers involved. (Author)

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1980/755/755-007.pdf
• Summary URL:
  https://scholar.google.com/scholar_lookup?title=EVALUATION+OF+PAVEMENT+IN+FLORIDA+BY+USING+THE+FALLING-+WEIGHT+DEFLECTOMETER&author=J.+Sharma&author=R.+Stubstad&publication_year=1980
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • This paper appeared in Transportation Research Record No. 755: Evaluation and Analysis of Flexible Pavement Components and Properties. 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:
  • Sharma, Jatinder
  • Stubstad, R N
• Conference:
  • 59th Annual Meeting of the Transportation Research Board
  • Location: Washington District of Columbia, United States
  • Date: 1980-1-21 to 1980-1-25
• Publication Date: 1980

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 42-48
• Monograph Title: Evaluation and Analysis of Flexible Pavement Components and Properties
• Serial:
  • Transportation Research Record
  • Issue Number: 755
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Computer programs; Defects; Deflection; Falling weight deflectometers; Flexibility; Mechanical properties; Modulus of elasticity; Nondestructive tests; Pavement distress; Pavement performance; Pavements; Structural analysis
• Geographic Terms: Florida
• Old TRIS Terms: Pavement deflection
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 00322996
• Record Type: Publication
• ISBN: 0309030684
• Files: TRIS, TRB
• Created Date: Apr 15 1981 12:00AM