SOME OBSERVATIONS REGARDING FROST ACTION

THE AUTHORS ADVANCE THE INTERESTING HYPOTHESIS THAT THE NATURE OF FROST HEAVE IN ROADS, THE SPALLING OF CONCRETE PAVEMENT, AND THE DISRUPTION OF MASONRY THROUGH FROST ACTION IS SUBSTANTIALLY THE SAME. IT HAS BEEN ESTABLISHED THAT FROST BOILS AND THE GREATER PART OF FROST HEAVING IS A RESULT NOT SO MUCH FO FREEZING OF MOISTURE PRESENT IN AND ONE SPOT IN SOIL CAPILLARIES BUT OF THE BUILDING UP TO ICE PLATES THROUGH MIGRATION OF MOISTURE FROM ROAD SHOULDERS AND SUB-GRADE WATER TABLES. THE SPALLING OF CONCRETE AND MASONRY MAY BE DUE NOT TO TOE FREEZING OF STATIC WATER WITHIN THE PORES OF THE MASS, BUT TO THE BUILDING UP OF ICE PLATES OR INCIPIENT ICE PLATES DUE TO MIGRATION FROM THE WARM SIDE. TO INVESTIGATE SUCH A CONCLUSION, A TEST WAS DEVISED THAT DUPLICATED AS NEARLY AS POSSIBLE THE NATURAL CONDITIONS. AS A FIRST STEP, STANDARD BUILDING BRICKS WERE TESTED WITH ONE END IN WATER ABOVE THE FREEZING POINT, THE OTHER END EXPOSED TO A TEMPERATURE BETWEEN 0 AND 10 DEG. F., AND THE MID-SECTION OF THE BRICK SURROUNDED BY INSULATION. PRELIMINARY TESTS ON A POROUS BRICK SEEM TO BEAR OUT THE ASSUMPTIONS, FOR THE BRICK SPALLED QUICKLY NEAR THE COLD END, PRODUCING A CLEAN FRACTURE WHICH WAS COATED WITH ABOUT 1 MM.OF CONTINUOUS ICE. /AUTHOR/

  • Supplemental Notes:
    • Vol 19, pp 281-283
  • Authors:
    • Gill, A F
    • Thomas, J F
  • Publication Date: 1940

Media Info

  • Monograph Title: Proceedings of the Nineteenth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 5-8, 1939
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00237975
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Oct 3 1971 12:00AM