Relationships between liquid limit, cation exchange capacity, and swelling potentials of clayey soils

Yilmaz I.

EURASIAN SOIL SCIENCE, vol.37, no.5, pp.506-512, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 5
  • Publication Date: 2004
  • Title of Journal : EURASIAN SOIL SCIENCE
  • Page Numbers: pp.506-512


As is known, the liquid limit has been used worldwide as an index test for a quick consistency characterization of clayey soils, as it is easy and inexpensive to determine. Consistency is a result of the hydrophilic and cohesive nature of clays caused by the adsorbed water surrounding the clay particles. Cation exchange capacity is a parameter that is affected by the type of clay mineral, and there is a relationship between cation exchange capacity and liquid limit. However, there is no clearly defined quantitative relation between them. In this study, fine-grained soil samples have been collected from various locations and tested. The tests include determination of cation exchange capacity and liquid limit. The parameters obtained were correlated, and a regression equation established showing a high coefficient of correlation (R = 0.97). Finally, a classification and Swelling potential chart for clayey soils is suggested based on the cation exchange capacity and the liquid limit.