SEPARATION, FRACTIONATION AND MINERALOGY OF CLAYS IN SOILS

A WORKING METHOD IS DESCRIBED FOR SEPARATION, FRACTIONATION AND IDENTIFICATION OF COLLOID AND NEAR COLOIDAL CALY MINERALS IN SOILS. THE TECHNICAL INFORMATION PRESENTED PERTAINS TO SUPER-CENTRIFUGATION, ELECTRON- MICROSCOPY AND X-RAY DIFFRACTION. TWENTY-TWO SAMPLES HAVE BEEN INVESTIGATED IN CONJUNCTION WITH A SOIL STUDY OF PUMPING PAVEMENTS. SOILS WERE FIRST DISPERSED AND SEPARATED BY GRAVITY SEDIMENTATION. FRACTIONATION WAS ACCOMPLISHED BY CONTROLLED SUPER-CENTRIFUGATION. THE SEPARATED FRACTIONS WERE PURIFIED AND THEN ANALYZED BY X-RAY DIFFRACTION. COMPUTED SIZE FRACTIONS WERE CHECKED BY SHADOW CASTINGS AND LINEAL DIMENSIONS ON ELECTRON MICROGRAPHS. RESULTS INCLUDE IDENTIFICATION OF THE MINERAL OR MINERALS PRESENT AND THE PROPERTIES OF THE NATURAL SAMPLE FROM WHICH THE COLLOIDAL FRACTIONS WERE EXTRACTED. /AUTHOR/

  • Supplemental Notes:
    • Vol 28, pp 469-480, 9 FIG, 4 TAB, 9 REF
  • Authors:
    • Havens, J H
    • Young, J L
    • Baker, R F
  • Publication Date: 1949

Media Info

  • Monograph Title: Proceedings of the Twenty-Eighth Annual Meeting of the Highway Research Board Held at Washington, D.C. December 7-10, 1948
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00229992
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Sep 27 1971 12:00AM