SOIL MOISTURE TENSION AND ICE SEGREGATION

SOME OF THE FUNDAMENTAL ASPECTS OF FROST ACTIONS IN SOILS ARE DISCUSSED. IT IS SUGGESTED THAT THE FREEZING POINT DEPRESSION AT THE ICE-WATER INTERFACE DETERMINES THE SOIL MOISTURE TENSION WHICH ACTS AS THE DRIVING FORCE DURING FROST HEAVING. THE DIMENSIONS OF THE SOIL PORES ARE RESPONSIBLE, AT LEAST IN PART, FOR THE INDUCED FREEZING POINT DEPRESSION WHEN A SATURATED SOIL SPECIMEN IS FROZEN UNIDIRECTIONALLY. MOISTURE TENSIONS IN EXCESS OF 8,000 CM OF WATER HAVE BEEN MEASURED IN CLOSED SYSTEMS CONTAINING FINEGRAINED SOILS AFTER HEAVING APPROACHED ZERO, BUT ARE MUCH LESS IN COARSE-GRAINED SOILS. BLENDED SOILS COVERING A WIDE TEXTURAL RANGE AS WELL AS FINE OTTAWA SAND WERE USED TO PREPARE A SERIES OF TEST SPECIMENS. IN GENERAL, THE EXPERIMENTAL FINDINGS ARE IN HARMONY WITH THE SUGGESTED THEORY. /AUTHOR/

Media Info

  • Monograph Title: Fundamental and practical concepts of soil freezing
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00237707
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 5 1994 12:00AM