EFFECTS OF LOADS ON PAVEMENTS AS INDICATED BY STRESS MEASUREMENTS

FACTS ESTABLISHED BY THE USE OF STRAIN GAGES TO MEASURE STATIC OR SLOWLY ROLLING LOADS ON CONCRETE SLABS ARE REPORTED AND COMPARED WITH RESULTS OF DYNAMIC TESTS TO INVESTIGATE RELATIONSHIPS BETWEEN STATIC AND IMPACT LOADING. CONCLUSIONS REACHED BY THE BPR AS A RESULT OF COMBINED TESTS OF CONCRETE BEAMS ARE THAT (1) CONCRETE IS CAPABLE OF GREATER ELASTIC DEFORMATION UNDER IMPACT THAN UNDER ORDINARY STATIC LOADS; (2) FATIGUE OF CONCRETE UNDER REPEATED IMPACT EXISTS; (3) REPEATED IMPACTS STRESSING THE CONCRETE TO ABOUT 55% OF ITS STATIC MODULUS OF RUPTURE EVENTUALLY CAUSE FAILURE; AND (4) BELOW THIS FATIGUE LIMIT EQUIVALENT LOADS, WITHOUT REGARD TO THEIR METHOD OF APPLICATION PRODUCE THE SAME STRESS, WHILE BEYOND THIS LIMIT THE DIFFERENCE IN BEHAVIOR IS DUE TO THE DURATION OF THE LOAD APPLICATION.

• Record URL:
  • https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/7/7-019.pdf
• Supplemental Notes:
  • Vol 7, Part I, PP 172-175, 5 REF; part of Report of Committee on Structural Design of Roads. 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:
  • Teller, L W
• Publication Date: 1928

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Seventh Annual Meeting of the Highway Research Board Held at Washington, D.C. December 1-2, 1927. Part I: Reports of Research Committees and of Special Investigations and Papers
• Serial:
  • Highway Research Board Proceedings
  • Volume: 7
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Accelerated tests; Concrete; Concrete pavements; Crash tests; Dynamic loads; Fatigue (Mechanics); Fatigue limit; Repeated loads; Static loads
• Subject Areas: Highways; Pavements; Research;

Filing Info

• Accession Number: 00207145
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Aug 8 1971 12:00AM