Effect of Lime on the Plasticity of Fine-Grained Soils of Tabriz Northern Highway Route, Iran

  • Mahin SalimiEmail author
  • Ebrahim Asghari-Kaljahi
  • Masoud Hajialilue-Bonab
Conference paper


Fine-grained soils with high plasticity exhibit an expansion potential when the soil moisture changes. Because of the swelling nature of the fine-grained soils, the use of lime to improve their engineering properties is common. This research investigated the effect of lime on plastic soils from Tabriz northern highway, Iran. Soil samples were taken from five locations along this highway with a length of about 17 km. The soils classification, based on USCS, is CL and plasticity index values of soils (PI) vary between 15 and 25%. The properties of soil-lime mixtures depended on the soil type, lime content were curing time. Soil samples mixed with 2, 4 and 6% lime at optimum moisture content were allowed to cure at room temperature for 2, 14, and 28 days. Test results indicate that addition of lime increases the plastic limit soils, while the plasticity index of samples decreases. Adding more lime and curing more time indicate more reduction in the plasticity index. Generally, the addition of 4% lime is good for stabilizing all soil samples and is recommended as the optimal lime content for the study soils.


Tabriz northern highway Expansive potential Lime stabilization Soil plasticity 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Mahin Salimi
    • 1
    Email author
  • Ebrahim Asghari-Kaljahi
    • 2
  • Masoud Hajialilue-Bonab
    • 3
  1. 1.University of TabrizTabrizIran
  2. 2.Department of Earth SciencesUniversity of TabrizTabrizIran
  3. 3.Faculty of Civil EngineeringUniversity of TabrizTabrizIran

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