EXPERIMENTAL STUDY OF THE ATTACK OF WATER ON DRY COHESIVE SOIL SYSTEMS

THE MECHANISM OF WATER ATTACK ON DRY COHESIVE SOIL SYSTEMS WAS STUDIED BY MEANS OF SIMPLE SLAKING TESTS ON SPECIMENS PREPARED FROM FIVE SOILS AND A NUMBER OF THEIR HOMOINIC VARIANTS AS WELL AS ON SAND-CLAY SPECIMENS MANUFACTURED FROM THESE SOILS AND CRUSHED LIMESTONE AND FLINT SANDS. THE OBSERVED SLAKING PICTURES AND RATES WERE ANALYZED WITH REFERENCE TO SUCH SOIL PARAMETERS AS ATTERBERG LIMITS, TYPES AND PERCENTAGES OF CLAY AND ORGANIC MATTER, HEATS OF WETTING, AND PRESENCE OR ABSENCE OF A GRANULAR BEARING SEKELTON. FOR THE NATURAL SOILS, A SIMPLE EXPONENTIAL RELATIONSHIP WAS FOUND BETWEEN THE SHRINKAGE LIMITS AND THE SLAKING TIMES; HOWEVER, THE SLAKING PICTURES WERE DIFFERENT FOR EXPANSIVE AND NONEXPANSIVE SOILS AND ALSO FOR EXPANSIVE SOILS POSSESSING RELATIVELY LARGE SECONDARY AGGREGATES THAT WERE PROTECTED BY WETTING- RESISTANT ORGANIC FILMS. ANALYSIS OF ALL THE DATA OBTAINED ON THE NATURAL SOILS, THEIR VARIANTS THAT GIVE MAXIMUM AND MINIMUM SLAKING TIMES, AND CORRESPONDING SAND-CLAY SYSTEMS YIELDED INFORMATION ON THE MECHANISM AND TIME RATE OF WATER ATTACK ON A WIDE RANGE OF SOIL SYSTEMS. ANALYSIS ALSO SUGGESTED A POSSIBLE SEQUENCE OF EVENTS THAT CAUSE A GRADUAL LOSS OF MECHANICAL STABILITY OF MINE WASTE DUMPS DUE TO INTERNAL WEATHERING UNDER ACID CONDITIONS AND MAY LEAD TO THEIR ULTIMATE CATASTROPHIC FAILURE. /AUTHOR/

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    Transportation Research Board

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  • Authors:
    • Winterkorn, Hans F
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  • Publication Date: 1973

Media Info

  • Media Type: Digital/other
  • Features: Figures; References; Tables;
  • Pagination: pp 1-7
  • Monograph Title: SOIL EROSION: CAUSES AND MECHANISMS: PREVENTION AND CONTROL
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00236629
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jun 25 1973 12:00AM