Effect of Soil Salinization on the Liquid Limits of Soils: A Review

  • Uddav Ghimire Department of Civil Engineering &Engineering Mechanics, University of Arizona, Tucson, Arizona, USA
Keywords: Pore fluid salinity, Soil salinization, Atterberg limits, Expansive soils, Non-expansive soils


Soil salinization is one of the major effects of ongoing climate change, which has both direct and indirect effects in Civil Engineering. Salt deposition is a major problem that has been observed for last the few decades. The presence of salt alters the mechanical, chemical, and hydraulic properties of soil materials. Several attempts have been made by researchers to understand the effect of salt concentration on soil properties and its consequences. A good understanding of this is mostly for sustainable development and analysis of different failures. This paper presents a state-of-the-art review of research on the effect of pore water salinity on the Atterberg properties of soils. The soils having different mineralogical compositions over the different parts of world have been studied, which includes the study of expansive soils and non-expansive soils. The two possible mechanisms that control Atterberg values under the presence of pore water salinity are diffuse double layer theory and soil fabric. Although much research has been conducted, the explanation of the mechanism controlling the liquid limit values of mixed clay minerals in the presence of salinity is still very limited. A possible reason is the lack of study on these types of soils.


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