MODEL STUDIES OF PRESTRESSED RIGID PAVEMENTS FOR AIRFIELDS

SMALL SCALE MODELS WERE USED TO PROVIDE BASIC INFORMATION CONCERNING THE BEHAVIOR OF PRESTRESSED RIGID PAVEMENTS UNDER VARIOUS CONDITIONS OF LOADING. IN THE MODEL, PROTOTYPE CONDITIONS WERE SIMULATED THROUGH THE USE OF SMALL PRESTRESSED GYPSUM CEMENT SLABS PLACED ON AN ARTIFICIAL SUBGRADE OF NATURAL RUBBER. STATIC LOADS WERE APPLIED BY MEANS OF SINGLE FOOTPRINTS OF VARIOUS SIZES. THE FOLLOWING OBSERVATIONS AND MEASUREMENTS WERE MADE: (1) CRACK PATTERNS AND CRACK DEVELOPMENT FOR VARIOUS CONDITIONS OF LOADING, (2) DEFLECTIONS MEASURED FOR INTERIOR AND EDGE LOADINGS FOR ELASTIC AND ELASTO-PLASTIC CONDITIONS IN THE SLABS, (3) MAXIMUM STRAINS AND STRAIN DISTRIBUTION MEASURED FOR INTERIOR AND EDGE LOADINGS WITHIN THE ELASTIC LIMIT OF THE SLABS, AND (4) ULTIMATE LOAD-CARRYING CAPACITY OF THE SLABS FOR VARIOUS CONDITIONS OF LOADING. WESTERGAARD'S THEORETICAL ANALYSES OF RIGID PAVEMENT BEHAVIOR WAS USED WHERE CRITICAL STRESSES IN THE SLAB AND SUBGRADE REMAIN WITHIN THEIR RESPECTIVE ELASTIC LIMITS. TEST RESULTS SHOW THAT THESE SLABS, WHEN SUBJECTED TO CONTROLLED STATIC LOADINGS, EXHIBIT CHARACTERISTICS BELIEVED TO BE ANALOGOUS TO THOSE OF THE PROTOTYPE. IT IS CONCLUDED THAT THIS TYPE OF TESTING CAN BE A USEFUL AND VALID TOOL FOR INVESTIGATING THE BEHAVIOR OF PRESTRESSED AIRFIELD PAVEMENTS FOR VARIOUS CONDITIONS OF LOADING AND PRESTRESSING.

• Record URL:
  http://onlinepubs.trb.org/Onlinepubs/hrbbulletin/179/179-003.pdf
• Supplemental Notes:
  • No 179, pp 32-50, 21 FIG, 3 TAB, 5 REF 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:
  • Carlton, Paul F
  • Behrmann, Ruth M
• Publication Date: 1958

Media Info

• Media Type: Digital/other
• Pagination: 19p
• Monograph Title: Prestressed concrete pavement research
• Serial:
  • Highway Research Board Bulletin
  • Issue Number: 179
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Airport runways; Bearing capacity; Coefficient of subgrade reaction; Deflection; Gypsum cement; Natural rubber; Pavement cracking; Pavements; Prestressing; Rigid pavements; Slabs; Static loads; Subgrade materials; Theory
• Uncontrolled Terms: Model tests
• Old TRIS Terms: Pavement deflection; Westergaards theory
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 00205714
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Sep 16 1994 12:00AM