TEMPERATURE VARIATIONS IN A CONCRETE PAVEMENT AND THE UNDERLYING SUBGRADE

THE VARIATIONS IN TEMPERATURE IN A CONCRETE PAVEMENT AND ITS UNDERLYING SUBGRADE IN A NORTHERN CLIMATE ARE SHOWN OVER A PERIOD OF 5 YEARS. TEMPERATURES WERE RECORDED AT SIX PLACES IN THE 7-IN. SLAB, AT FIVE PLACES IN THE LOAMY FINE SAND SUBGRADE, AND IN THE AIR ABOVE THE SLAB AT 6-MIN. INTERVALS FROM NOVEMBER 1940 THROUGH OCTOBER 1945. VARIATIONS IN MOISTURE CONTENT WERE MEASURED FOR 1 YEAR. SOME SIGNIFICANT DATA OF INTEREST TO ENGINEERS IN NORTHERN STATES ARE PRESENTED: THE AVERAGE ANNUAL RANGE IN AIR TEMPERATURE WAS 112.7 DEG. F. WHILE THE AVERAGE ANNUAL RANGE IN TEMPERATURE AT THE CENTER OF THE SLAB WAS 114.3 DEG. F. WITH A MIDPOINT AT 50.4 DEG. F.; FROST PENETRATED 5 FT. BELOW THE SLAB BY JANUARY 14 AND DEPARTED FROM THE SUBGRADE BY MARCH 23 IN AN AVERAGE YEAR; THE TOP OF SLAB UNDERWENT 48 CYCLES OF FREEZING AND THAWING PER YEAR, THE BOTTOM UNDERWENT 24 CYCLES AND THE SUBGRADE 1 FT. BELOW THE SLAB 2 CYCLES; THE LOWEST TEMPERATURES RECORDED IN THE SUBGRADE WERE 10 DEG. F. AT 2 FT. BELOW THE SLAB AND 25 DEG. F. AT 5 FT. BELOW THE SLAB. /AUTHOR/

• Record URL:
  https://onlinepubs.trb.org/Onlinepubs/hrbproceedings/25/25-016.pdf
• Supplemental Notes:
  • Vol 25, pp 169-180, 12 FIG, 3 TAB. 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:
  • Swanberg, J H
• Publication Date: 1946

Media Info

• Media Type: Digital/other
• Monograph Title: Proceedings of the Twenty-Fifth Annual Meeting Held at Skirvin Hotel, Oklahoma City, Oklahoma, January 25-28, 1946
• Serial:
  • Highway Research Board Proceedings
  • Volume: 25
  • Publisher: Highway Research Board

Subject/Index Terms

• TRT Terms: Concrete pavements; Freezing; Frost; Moisture content; Soil water; Subgrade (Pavements); Temperature
• Uncontrolled Terms: Frost penetration; Temperature distribution
• Old TRIS Terms: Subgrade moisture
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00207309
• Record Type: Publication
• Files: TRIS, TRB
• Created Date: Jun 22 1971 12:00AM