SOME SWELLING CHARACTERISTICS OF COMPACTED CLAYS

The main purpose in this paper was to point out the substantial differences that can occur in the unit swelling of clay in the vertical and horizontal directions. A detailed description of the simple equipment and techniques used for measuring separately the axial and radial swelling components of cylindrical specimens was included to encourage others to begin work which would extend the scope of the reported studies. By using the equations, Mann has made use of the measured vertical swelling to compute the horizontal swelling and the swelling ratio. There is agreement by Laughter and the authors that the initial density is one of the relevant factors affecting swell. Wooltorton suggests that a sinusoidal heaving of surface soils may be related to unequal swelling properties. Warkentin and Bozozuk measured horizontal and vertical shrinkage and swell of Leda and Lake Agassiz clays. The references cited by Wooltorton and by Marain and Ayyor note the nature of the exchangable cations in the clay minerals. The possible use of mercury in the chamber of the test apparatus is discussed.

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  • Accession Number: 00095884
  • Record Type: Publication
  • Report/Paper Numbers: Closure
  • Files: TRIS
  • Created Date: Jun 10 1975 12:00AM