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Volume 43 Issue 7
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ZHOU Yin-kang, YAN Chang-hong, ZHENG Jun, XIE Sheng-hua, XIANG Guo-sheng. Mesoscale model for thermal conductivity of compacted dual-porosity bentonite[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(7): 1352-1359. DOI: 10.11779/CJGE202107022
Citation: ZHOU Yin-kang, YAN Chang-hong, ZHENG Jun, XIE Sheng-hua, XIANG Guo-sheng. Mesoscale model for thermal conductivity of compacted dual-porosity bentonite[J]. Chinese Journal of Geotechnical Engineering, 2021, 43(7): 1352-1359. DOI: 10.11779/CJGE202107022
shu

Mesoscale model for thermal conductivity of compacted dual-porosity bentonite

  • 1.

    Anhui University of Technology, Maanshan 243002, China

  • 2.

    School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China

  • 3.

    Nanjing Metro Group Co., Ltd., Nanjing 210008, China

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  • Received Date: July 16, 2020
  • Available Online: December 02, 2022
    Graphical Abstract
    • Abstract
  • The thermal conductivity of compacted bentonite is very crucial in evaluating the safety of heat dissipation and in calculating the temperature distribution of radioactive waste repository. An accurate predictive model is of great significance to the calculation of their thermal conductivity under various conditions. A mesoscale model is proposed for the thermal conductivity of compacted dual-porosity bentonite by numerical simulation. The thermal conductivity of 160 measured samples is selected and compared with their simulated one for five typical kinds of compacted bentonite with different dry densities and water contents. The results show that the most predictive values are within ±20% range of the measured ones, which verifies the reliability of the model effectively. The results in this study provide a new approach and/or strategy to predict the thermal conductivity of the compacted dual-porosity bentonite.
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    • References (27)
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