ADFREEZING OF LEDA CLAY TO ANCHORED FOOTING COLUMNS

THE HEAVING FORCE TRANSMITTED TO 3 1/2 IN. DIAMETER STEEL PIPED BY ADFREEZING IN LEDA CLAY WAS MEASURED IN THE FIELD FOR TWO CONSECUTIVE WINTERS. THE MAXIMUM UPLIFT FORCE WAS APPROXIMATELY 6000 ROUNDS WHICH CORRESPONDS TO AN APPARENT ADFREEZE STRENGTH OF ABOUT 12.5 POUNDS PER SQUARE INCH.TT DEVELOPED GRADUALLY DURING PROLONGED PERIODS OF COLD WEATHER BUT DROPPED OFF RAPIDLY DURING WARMING TRENDS,ALTHOUGH THE PROFILE REMAINED BELOW 0 DEG. ADFREEZING DID NOT RETARD RETARD FROST HEAVE IN THE SOIL IN THE VICINITY OF THE STEEL PIPES. AGREEMENT BETWEEN EXPERIMENTAL VALUES FOR MAXIMUM UP. LIFT FORCES BY ADFREEZING AND VALUES PREDICTED BY DALMOTOV'S EQUATION SUGGESTS THAT SUCH PREDICTIONS CAN BE USED AS A GUIDE FOR DESIGN PURPOSES IF NO OTHER INFORMATION IS AVAILABLE. /CGRA/

  • Supplemental Notes:
    • Vol 6, No3, PP 327-337,5FIG, 2PHOT,7REF
  • Authors:
    • Penner, E
    • Irwin, W W
  • Publication Date: 1969-8

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00237288
  • Record Type: Publication
  • Source Agency: CANADIAN GOOD ROADS ASSOCIATION
  • Files: TRIS
  • Created Date: Nov 23 1970 12:00AM