Study of Suction Versus Water Content of Soil of Turamdih Area Mixed with Bentonite and Its Implication on the Liner Property of Tailing Dam: A Case Study of East Singhbhum, Jharkhand, Eastern India

  • Brahm Deo Yadav
  • Sunil Kumar Gupta
  • Sahendra Singh
Conference paper
Part of the Water Science and Technology Library book series (WSTL, volume 78)


The pressure difference between air and water component in soil void is a key variable in the analysis of hydromechanical behavior of unsaturated soils. Capillary action is directly related to the free energy of the pore water in a soil and can be used to classify the relative swelling potential of expansive soil. Lower hydraulic conductivity requirement of compact clay liner (CCL) is fulfilled through addition of bentonite to the locally available soil material. Thus, the nature of CCL becomes expansive. It is clear from the test data that higher the suction pressure, lower is the hydraulic conductivity and higher is the swelling. The behavior of alternate swelling and shrinking is harmful in other case, but in the area of linear application it is always saturated under wet tailings. So, in between high swelling and low hydraulic conductivity, suction gives positive response towards liner design in uranium ore tailing dams. The relationship between the affinity of soil to retain water and suction can be measured based on the filter paper technique of total section. The obtained value of total suction was thereafter used to estimate the expansiveness of soils. Compacted soils have been widely used as landfill barriers because of many favorable characteristics such as low permeability and high swelling. Compacted clay liner made of different alternatives are normally unsaturated and therefore, suction can be used as a behavior indicator in addition to generally used factor such as water content, dry density, void ratio hydraulic conductivity, etc. This study is mainly focused on investigating suction characteristics of CCL mixtures. Suction was measured using filter paper method for these combinations. The laboratory results were analyzed to provide on understanding of the suction concept. It was found that suction depends primarily on the water content and the bentonite content of the mixture.


Suction Compacted clay liner Landfill barrier Hydration Hydraulic conductivity Swelling Filter paper 


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Copyright information

© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  • Brahm Deo Yadav
    • 1
  • Sunil Kumar Gupta
    • 1
  • Sahendra Singh
    • 2
  1. 1.Department of Environmental Science and EngineeringIndian Institute of Technology (Indian School of Mines)DhanbadIndia
  2. 2.Department of Applied GeologyIndian Institute of Technology (Indian School of Mines)DhanbadIndia

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