OBSERVATIONS ON FLEXIBLE PAVEMENT DEFLECTIONS IN MARYLAND

IN A LONG TERM STUDY OF HIGH-TYPE FLEXIBLE PAVEMENTS IN MARYLAND, A BENKELMAN BEAM WAS USED TO MEASURE DEFLECTION OF SELECTED PAVEMENTS FOR PERIODS UP TO TEN YEARS. THE DEFLECTION OF NEW PAVEMENTS CONSTRUCTED SINCE 1960 WILL BE MEASURED ONCE DURING THE FALL. ANALYSIS OF DEFLECTION BY MAGNITUDE WITH RESPECT TO SUBGRADE SOIL TYPE, SPRING AND FALL MEASUREMENTS, INNER AND OUTER WHEELPATHS AND PAVEMENT THICKNESS IS INCLUDED. CORRELATION IS DEVELOPED BETWEEN DEFLECTION DISTRIBUTION BY MAGNITUDE AND GENERAL SUBGRADE SOIL TYPE. SIGNIFICANT DIFFERENCES WERE FOUND BETWEEN DEFLECTIONS OF INNER AND OUTER WHEELPATHS AND BETWEEN SPRING AND FALL MEASUREMENTS BY WHEELPATH. RELATIONS BETWEEN DEFLECTIONS AND PERFORMANCE, SUBGRADE MOISTURE CONTENT AND CHANGE IN AVERAGE DAILY TRAFFIC WERE EXAMINED FOR SIGNIFICANCE.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrr/1966/131/131-006.pdf
• Supplemental Notes:
  • Paper sponsored by Committee on Flexible Pavement Design and presented at the 45th Annual MeetingDistribution, 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:
  • Mullen, W G
  • Clingan, W R
  • Paulis, E T
• Discussers:
  • Nichols Jr, F P
  • Mullen, W G
• Publication Date: 1966

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 109-127
• Monograph Title: Design, Performance and Surface Properties of Pavements
• Serial:
  • Highway Research Record
  • Issue Number: 131
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Average daily traffic; Benkelman beam; Deflection; Falls; Flexible pavements; Measurement; Moisture content; Pavements; Soils; Subgrade materials; Thickness
• Uncontrolled Terms: Pavement thickness
• Geographic Terms: Maryland
• Old TRIS Terms: Fall measurements; Spring measurements; Wheel path
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00206241
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Nov 7 1994 12:00AM