DETERMINING PAVEMENT STRUCTURAL NUMBER FROM FWD TESTING

A structural number is used as an indicator of pavement strength in a number of pavement design and deterioration models. In determining the structural number of an existing pavement structure, traditional methods of laboratory testing have become expensive and are not always appropriate. The parameter preferably is obtained from nondestructive deflection testing. Currently two techniques to determine structural numbers from surface deflections have been suggested and documented by AASHTO. A powerful alternative procedure for determining a pavement's structural number from falling-weight deflectometer surface deflections is presented. The approach has been verified and compared with other available techniques on 62 in-service pavement sections. The method is rapid, does not need mechanistic analysis tools, and is highly suitable for characterizing pavement strength in pavement management systems.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/trr/1994/1448/1448-008.pdf
• Record URL:
  https://scholar.google.com/scholar_lookup?title=DETERMINING+PAVEMENT+STRUCTURAL+NUMBER+FROM+FWD+TESTING&author=G.+Rohde&publication_year=1994
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03611981
• Supplemental Notes:
  • This paper appears in Transportation Research Record No. 1448, Strength and Deformation Characteristics of Pavement Sections. 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:
  • Rohde, Gustav T
• Publication Date: 1994

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 61-68
• Monograph Title: Strength and deformation characteristics of pavement sections
• Serial:
  • Transportation Research Record
  • Issue Number: 1448
  • Publisher: Transportation Research Board
  • ISSN: 0361-1981

Subject/Index Terms

• TRT Terms: Deflection; Falling weight deflectometers; Nondestructive tests; Pavement structural numbers; Pavements
• Uncontrolled Terms: Rapid methods
• Old TRIS Terms: Pavement deflection; Pavement structural numbers
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces;

Filing Info

• Accession Number: 00674330
• Record Type: Publication
• Files: TRIS, TRB, ATRI
• Created Date: Feb 23 1995 12:00AM