SOIL STABILIZATION BY INCIPIENT FUSION

A PROCEDURE IS GIVEN FOR DETERMINATION OF THE MELT RANGE OF SOIL-ADDITIVE MIXUTRES USING THE PHASE EQUILIBRIA APPROACH, THUS MAKING POSSIBLE THE CHOICE OF A FLUXING AGENT TO BRING THE MELT RANGE OF THE MIXTURES WITHIN THE CAPABILITIES OF EXISTING MOBILE DOWN-DRAFT HEATERS. THE INVESTIGATION INCLUDES THE MELT-TEMPERATURE RANGE OF SOILS WITH RESPECT TO THEIR COMPOSITION, AN ANALYSIS OF SOILS REPRESENTATIVE OF THE VARIOUS OXIDE COMBINATIONS FOUND IN SOIL TYPES COMPRISING THE SURFACE OF THE EARTH, AND THE THERMAL STABILIZATION OF A SOIL BY USE OF A COMMON FLUXING AGENT TO LOWER THE INCIPIENT FUSION TEMPERATURE. THE BEHAVIOR OF SOILS AT HIGH TEMPERATURES WAS INVESTIGATED TO PREDICT PHASE CHANGES AND MELT RANGES FOR THE MINERAL COMBINATIONS EXISTING IN SOILS. A LIST OF COMMON CLAY AND NON-CLAY MINERALS IS PRESENTED, INCLUDING STRUCTURAL WATER CONTENTS, TYPICAL ATOMIC PROPORTIONS OF DRY MELT, AND MELT- TEMPERATURE RANGES, AND A METHOD IS DESCRIBED FOR ESTIMATING THE FULL-MELT TEMPERATURES OF SOILS WITH THESE DATA. SOME ESTIMATED AND OBSERVED FUSION RANGES ARE GIVEN FOR SOIL AGGREGATE MATERIAL. MINERALOGY AND OXIDE COMBINATIONS OF COMMON SOIL TYPES OF THE WORLD ARE CONSIDERED, AND A LIST OF REPRESENTATIVE SOILS IS PRESENTED TOGETHER WITH THE SOIL MINERAL CONTENTS. A TYPICAL SOIL FROM THE SIERRA UPLIFT WAS INVESTIGATED FOR MINERAL CONTENT, AND THE REDUCTION IN SOIL TYPES OF THE WORLD ARE CONSIDERED, AND A LIST OF REPRESENTATIVE SOILS IS PRESENTED TOGETHER WITH THE SOIL MINERAL CONTENTS. A TYPICAL SOIL FROM THE SIERRA UPLIFT WAS INVESTIGATED FOR MINERAL CONTENT, AND THE REDUCTION IN SOIL FULL-MELT TEMPERATURE WAS ESTIMATED FOR INCREMENTS OF SODA ASH ADDITIVE NECESSARY TO BRING THE TEMPERATURE WITHIN USABLE RANGE FOR PRACTICAL THERMAL STABILIZATION. PYROMETRIC CONE TESTS, COMBINING VISUAL OBSERVATION WITH THERMO- ELECTRIC RECORDING, WERE USED TO DETERMINE THE SOIL-ADDITIVE INCIPIENT FUSION TEMPERATURES. FURTHER RESEARCH IS NEEDED ON THE EFFECTS OF TYPE AND AMOUNT OF FLUXING AGENT ON THE PROPERTIES OF THERMALLY STABILIZED SOILS /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 243-253
  • Monograph Title: Effects of temperatures and heat on engineering behavior of soils
  • Serial:

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Filing Info

  • Accession Number: 00237770
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Aug 25 1994 12:00AM