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/

  • Supplemental Notes:
    • Vol 25, pp 169-180, 12 FIG, 3 TAB
  • Authors:
    • Swanberg, J H
  • Publication Date: 1946

Media Info

  • Monograph Title: Proceedings of the Twenty-Fifth Annual Meeting Held at Skirvin Hotel, Oklahoma City, Oklahoma, January 25-28, 1946
  • Serial:

Subject/Index Terms

Filing Info

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