Liquid limit of Montmorillonite soils

Sridharan, A. ; Rao, S. M. ; Murthy, N. S. (1986) Liquid limit of Montmorillonite soils Geotechnical Testing Journal, 19 (3). pp. 156-164. ISSN 0149-6115

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The present work investigates the influence of compositional factors on the liquid limit of montmorillonite soils. The results showed that the percent clay fraction and surface area values did not relate with the liquid limit of the soils; the latter, however, were essentially controlled by the diffuse double layer thickness. Examination of the relations between compositional factors that affect the double layer thickness and liquid limit showed that the latter did not have a significant bearing with cation exchange capacity, while a near perfect correlation was obtained with the amount of exchangeable sodium ions present. Such a dependence resulted because of the greater ease of dissociation of adsorbed sodium ions from the clay surface in presence of water and subsequent contribution to the double layer thickness; the other exchangeable cations, namely, calcium, magnesium, and potassium, were strongly adsorbed by the clay surface and did not contribute appreciably to the double layer thickness.

Item Type:Article
Source:Copyright of this article belongs to ASTM International.
Keywords:Montmorillonite; Soils; Liquid Limit; Compositional Factors; Influence
ID Code:85862
Deposited On:06 Mar 2012 09:01
Last Modified:06 Mar 2012 09:01

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