INFLUENCE OF LIQUID AND CLAY MINERAL TYPE ON CONSOLIDATION OF CLAY - LIQUID SYSTEMS

THE INFLUENCE OF PHYSICO-CHEMICAL FACTORS ARE DESCRIBED ON THE COMPRESSIBILITY OF CLAYS. CONSOLIDATION & SUPPLEMENTARY TESTS WERE PERFORMED WITH THREE DIFFERENT CLAYS AND SEVEN LIQUIDS: ONE OF THESE WAS WATER AND THE OTHERS WERE ORGANIC LIQUIDS DIFFERING IN MOLECULAR STRUCTURE, DIPOLE MOMENT, AND DIELECTRIC CONSTANTS. EXPERIMENTS SHOWED THAT THE COMPRESSION INDICES OF THE NON-EXPANDING LATTICE CLAYS VARIED IN THE SAME MANNER AS THE DIPOLE MOMENT OF THE LIQUID USED. THE COMPRESSION INDICES OF THE EXPANDING LATTICE CLAY VARIED IN THE SAME MANNER AS THE DIELECTRIC CONSTANT OF THE LIQUIDS USED. THE SPECIFIC GRAVITY OF THE EXPANDING LATTICE CLAYS ALSO VARIED AS THHE DIELECTRIC CONSTANT OF THE LIQUIDS BUT WAS ADDITIONALLY INFLUENCED BY THE SIZE AND STRUCTURE OF THE LARGER MOLECULES. THE FOLLOWING CLAY MINERALS WERE STUDIED: (1) GEORGIA ACID KAOLINITE, (2) GOOSE LAKE WHITE CLAY-PREDOMINANTLY HALLOYSITE, AND (3) SODIUM-BENTONITE (MONTMORILLONITE) IN PELLET FORM. MINERALOGICAL IDENTIFICATION OF THESE MATERIALS WAS MADE BY MEANS OF X-RAY DIFFRACTION. EXPERIMENTATION WAS CONCERNED PRIMARILY WITH THE CONSOLIDATION TEST ON THESE MINERAL-LIQUID COMBINATIONS. THE MAJOR FACTORS FOUND TO HAVE A PRONOUNCED EFFECT ON THE EXPANSION PROPERTIES OF A SOIL-LIQUID MIXTURE ARE: (1) THE DIPOLE MOMENT, (2) THE DIELECTRIC CONSTANT, (3) THE EFFECT OF THE SORBED LIQUID ON THE ELASTIC REBOUND PROPERTIES OF THE SOIL FLAKES, AND (4) THE SIZE AND STRUCTURE OF THE LIQUID MOLECULES. THE SIZE OF THE LIQUID MOLECULE AND VISCOSITY OF THE LIQUID, APPEAR TO HAVE AN EFFECT ON THE AMOUNT AND RATE OF SECONDARY CONSOLIDATION.

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  • Accession Number: 00237881
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 17 1970 12:00AM