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Influence Factors of Swelling Characteristics of GMZ Bentonite

  • Yufeng Gao
  • Yuemiao Liu
  • Jingli Xie
  • Shengfei Cao
  • Like Ma
  • Qiang Tong
Conference paper
Part of the Environmental Science and Engineering book series (ESE)

Abstract

The swelling characteristics of bentonite is important to evaluate the long-term performance of deep geological repository of nuclear waste. A series of wetting tests on GMZ sodium and calcium bentonite were performed to investigate the swelling characteristics under different conditions. The influences of initial dry density and particle size were studied at different temperature. The test results show that the swelling deformation due to wetting is mainly affected by the dry density and little affected by particle size. The swelling ratio of GMZ bentonite increases with the increase of initial dry density. However, only the swelling ratio of sodium bentonite increases with the rise of temperature. The process of swelling deformation is a single or multi-stage mode depending on the initial dry density. Finally, the sample of the bentonite is subjected to a rapid swelling with the increase of the initial dry density. The swelling property of sodium bentonite is much higher than that of calcium bentonite. All results are very important for the study of swelling properties of GMZ bentonite.

Keywords

GMZ bentonite Swelling characteristics Temperature Initial dry density Particle size 

References

  1. 1.
    Liu YM, Wen ZJ (2003) Study on clay-based materials for the repository of high level radioactive waste. Mineral Petrol 23(4):42–45Google Scholar
  2. 2.
    Liu YM, Chen ZR (2001) Bentonite from Gaomiaozi, inner Mongolia as an ideal buffer/ backfilling material in handling highly radioactive wastes—a feasibility study. Acta Mineral Sin 21(3):541–543CrossRefGoogle Scholar
  3. 3.
    Wang J, Su R, Chen WM, Guo YH et al (2006) Deep geological disposal of high-level radioactive wastes in china. Chin J Rock Mech Eng 25(4):649–658Google Scholar
  4. 4.
    Liu YM, Cai MF, Wang J (2007) Compressibility of buffer material for HLW disposal in China. Uranium Geol 23(2):91–95Google Scholar
  5. 5.
    Pusch R, Karlnland O, Hokmark H (1990) GMM-a general microstructural model for qualitative and quantitative studies of smectite clays. SKB, Stockholm, Sweden, pp 90–94Google Scholar
  6. 6.
    Lloret A, Romero E, Villar MV (2004) FEBEX II project: final report on thermos-hydro-mechanical laboratory tests. Enresa, Madrid, Spain, pp 62–72Google Scholar
  7. 7.
    Villar MV, Lloret A (2008) Influence of dry density and water content on the swelling of a compacted bentonite. Appl Clay Sci 39(1):38–49CrossRefGoogle Scholar
  8. 8.
    Arifin YF (2008) Thermo-hydro-mechanical behavior of compacted bentonite-sand mixture: an experimental study. Bauhaus University, Weimar, GermanyGoogle Scholar
  9. 9.
    Villar MV, Lloret A (2004) Influence of temperature on the hydro-mechanical behaviour of a compacted bentonite. Appl Clay Sci 26:337–350CrossRefGoogle Scholar
  10. 10.
    Zhang FZ, Fang ZD, Qin B et al (2017) Study on bentonite’s swelling strain behaviour at different temperatures. J Logist Eng Univ 33(2):23–27Google Scholar
  11. 11.
    Ye WM, Zheng ZJ, Chen B et al (2014) Effects of pH and temperature on the swelling pressure and hydraulic conductivity of compacted GMZ01 bentonite. Environ Earth Sci 68(1):192–198Google Scholar
  12. 12.
    Sultan N, Delage P, Cui YJ (2002) Temperature effects on the volume change behavior of Boom clay. Eng Geol 64:135–145CrossRefGoogle Scholar
  13. 13.
    Shirazi SM, Kazama H, Chim-oye W (2006) Temperature and density effect on swelling characteristics and permeability of bentonite. Aust Geomech 41(2):89–100Google Scholar
  14. 14.
    Onal M (2007) Swelling and cation exchange capacity relationship for the samples obtained from a bentonite by acid activations and heat treatments. Appl Clay Sci 37:74–80CrossRefGoogle Scholar
  15. 15.
    Zhang HY, Cui SL, Liu JS et al (2010) Experimental study of swelling pressure of compacted bentonite-sand mixture. Rock Soil Mech 31(10):3087–3095Google Scholar

Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Yufeng Gao
    • 1
    • 2
  • Yuemiao Liu
    • 1
    • 2
  • Jingli Xie
    • 1
    • 2
  • Shengfei Cao
    • 1
    • 2
  • Like Ma
    • 1
    • 2
  • Qiang Tong
    • 1
    • 2
  1. 1.CNNC Key Laboratory on Geological Disposal of High-Level Radioactive WasteBeijingChina
  2. 2.Beijing Research Institute of Uranium GeologyBeijingChina

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