OVERLAY DESIGN USING DEFLECTIONS

THIS PAPER PRESENTS A SUMMARY OF THE PAVEMENT DEFLECTION MEASURING EXPERIENCE OF THE CALIFORNIA DIVISION OF HIGHWAYS. THESE MEASUREMENTS PROVIDE A MEANS OF DETERMINING IN-PLACE ROADWAY STRENGTH UNDER EXISTING CONDITIONS. THE CALIFORNIA TRAVELING DEFLECTOMETER WITH A 15-KIP TEST LOAD IS DESCRIBED AS THE STANDARD DEFLECTION MEASURING DEVICE. MEASUREMENTS OBTAINED WITH THIS DEVICE ARE COMPARED TO THOSE PRODUCED BY THE PROCEDURE OF THE CANADIAN GOOD ROADS ASSOCIATION OR THE BENKELMAN BEAM REBOUND PROCEDURE USING AN 18-KIP LOAD. CORRELATION DATA ARE PRESENTED FOR FOLLOW-UP TO DEFLECTION RESULTS OBTAINED ON PROJECTS RECONSTRUCTED BASED ON DEFLECTION STUDIES. THE VARIOUS FACTORS THAT INFLUENCE A PARTICULAR DESIGN SELECTION ARE DESCRIBED AND SHOWN IN A SCHEMATIC CHART. AS A RESULT OF A RECENT STUDY, A RELATIONSHIP BETWEEN BENKELMAN BEAM DEFLECTION UNDER A 15-KIP LOADING & SUBGRADE MODULUS, K-VALUE, IS PRESENTED. A PROCEDURE IS SUGGESTED, BASED ON THESE CRITERIA, TO DETERMINE PCC OVERLAY THICKNESS DESIGN. /AUTHOR/

• Record URL:
  • http://onlinepubs.trb.org/Onlinepubs/sr/sr116/116-023.pdf
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0309018439
• Supplemental Notes:
  • 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:
  • Sherman, George B
  • Hannon, Joseph B
• Conference:
  • Western Summer Meeting
  • Location: Sacremento California, United States
  • Date: 1970-8-17 to 1970-8-19
• Publication Date: 1971

Media Info

• Media Type: Print
• Features: Figures; References;
• Pagination: pp 189-198
• Monograph Title: Improving Pavement and Bridge Deck Performance
• Serial:
  • Highway Research Board Special Report
  • Issue Number: 116
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Benkelman beam; Bituminous pavements; Deflection; Deflectometers; Forecasting; Highways; Measurement; Modulus; Overlays (Pavements); Pavement maintenance; Pavements; Portland cement concrete; Strength of materials; Structural analysis; Subgrade (Pavements)
• Uncontrolled Terms: Structural adequacy
• Old TRIS Terms: Pavement deflection
• Subject Areas: Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218753
• Record Type: Publication
• ISBN: 0309018439
• Files: TRIS, TRB, ATRI
• Created Date: Jun 29 1971 12:00AM