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Experimental Study on the Freezing Temperatures of Saline Silty Soils

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  • Xusheng Wan
  • Yuanming Lai
  • Chong Wang

Abstract

The freezing temperature of soil is an important index to judge whether it is in a frozen state or not, and plays a key role in distinguishing salt expansion from frost heave. Freezing experiments on sulfate saline soil and its ion solution indicate that the initial freezing temperature of the soil is mainly determined by the properties of the ion solution. The effects of saline soil types and saline solution concentrations on the freezing temperature are also investigated. An equation to calculate the freezing temperature of the sulfate salt solution is deduced from the Pitzer ion model and its validity is verified by the experimental results. Under the assumption that the soil freezing temperature is determined by the freezing temperature of the corresponding ion solution and the energy of the ice‐liquid interface, a precise relation between the soil freezing temperature and the radius of the ice‐liquid interface is obtained and a general equation to determine the freezing temperature of the silty clay of the Qinghai‐Tibet Plateau is proposed. Copyright © 2015 John Wiley & Sons, Ltd.

Suggested Citation

  • Xusheng Wan & Yuanming Lai & Chong Wang, 2015. "Experimental Study on the Freezing Temperatures of Saline Silty Soils," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 26(2), pages 175-187, April.
    • Handle: RePEc:wly:perpro:v:26:y:2015:i:2:p:175-187
    DOI: 10.1002/ppp.1837
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    Cited by:

    1. Zean Xiao & Yuanming Lai & Jun Zhang, 2021. "Method for calculating the liquid water fraction of saline soil during the freezing process," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(1), pages 92-101, January.
    2. Chuanxin Rong & Shicheng Sun & Hua Cheng & Yin Duan & Fan Yang, 2022. "Experimental Study on Temporal and Spatial Evolutions of Temperature Field of Double-Pipe Freezing in Saline Stratum with a High Velocity," Energies, MDPI, vol. 15(4), pages 1-15, February.
    3. Jiazuo Zhou & Wenpeng Liang & Xiangchuan Meng & Changfu Wei, 2021. "Comparison of freezing and hydration characteristics for porous media," Permafrost and Periglacial Processes, John Wiley & Sons, vol. 32(4), pages 702-713, October.

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