Enhanced Isothermal Effect on Swelling Pressure of Compacted MX80 Bentonite

  • Snehasis TripathyEmail author
  • Ramakrishna Bag
  • Hywel R. Thomas
Conference paper


Laboratory isothermal swelling pressure tests were carried out on compacted MX80 bentonite at 25 and 70 °C with distilled water as the hydrating fluid. Assessment of the swelling pressure was carried out using the electrical triple-layer theory for interacting clay platelets. An increase in the temperature reduced the swelling pressure of the bentonite on account of decrease in the Gouy-layer charge, mid-plane potential and distance functions. Agreements between the calculated swelling pressures from the triple-layer theory and the experimental results were found to be reasonable for compaction dry densities of less than 1.45 Mg/m3.


Laboratory test Bentonite Swelling pressure Temperature Triple-layer theory 


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Copyright information

© Springer International Publishing Switzerland 2015

Authors and Affiliations

  • Snehasis Tripathy
    • 1
    Email author
  • Ramakrishna Bag
    • 2
  • Hywel R. Thomas
    • 1
  1. 1.Cardiff UniversityCardiffUK
  2. 2.National Institute of TechnologyRourkelaIndia

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