Hydraulic Performance of Geosynthetic Clay Liners with Mining Solutions

  • Yang Liu
  • Li Zhen Wang
  • Wei Jiang
Conference paper


Geosynthetic clay liners (GCL) have been widely used as impermeable materials in landfill and other projects due primarily to their low hydraulic conductivity (k). Recently, GCLs are increasingly considered to contain mining leachates which may result in the degradation of their hydraulic performance. This study reports the hydraulic performance of a GCL under the mining solution from a mine in Hunan Province. Flexible-wall hydraulic conductivity test and free swell index test were conducted on GCL and bentonite specimens. The results indicate that the swell index decreased from 31 mL/2 g (in water) to 22 mL/2 g (under the mining solution). The hydraulic conductivity unexpectedly increased from 3 × 10−11 m/s to 4 × 10−9 m/s when changing the permeable solution from water to the mining solution. While if the GCL specimens were prehydrated with water for two days before contacting mining solution, the k value was decreased to an acceptable level (8 × 10−11 m/s). The greater effective stress also imparts a low hydraulic conductivity, the k value dropped from 4 × 10−9 m/s to 1 × 10−10 m/s when the effective stress elevated from 35 kPa to 200 kPa. The results of this study could provide a helpful reference for the application of GCLs under mining solutions.


Geosynthetic clay liners Mining solution Hydraulic performance 



The authors were funded by the National Natural Science Foundation of China (Project No. 51608192), the Natural Science Foundation of Hunan Province (Grant No. 2016JJ4031, 2017JJ3070) and the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry (Year 2015, No. 1098).


  1. 1.
    Estornell, P., Daniel, D.E.: Hydraulic conductivity of three geosynthetic clay liners. J. Geotech. Geoenviron. Eng. 118, 1592–1606 (1992)CrossRefGoogle Scholar
  2. 2.
    Mazzieri, F., Di Emidio, G., Fratalocchi, E., Di Sante, M., Pasqualini, E.: Permeation of two GCLs with an acidic metal-rich synthetic leachate. Geotext. Geomembr. 40, 1–11 (2013)CrossRefGoogle Scholar
  3. 3.
    Bouazza, A., Gates, W.P.: Overview of performance compatibility issues of GCLs with respect to leachates of extreme chemistry. Geosynth. Int. 21(2), 151–167 (2014)CrossRefGoogle Scholar
  4. 4.
    Bouazza, A., Singh, R.M., Rowe, R.K., Gassner, F.: Heat and moisture migration in a geomembrane-GCL composite liner subjected to high temperatures and low vertical stresses. Geotext. Geomembr. 42(5), 555–563 (2014)CrossRefGoogle Scholar
  5. 5.
    Rowe, R.K.: Performance of GCLs in liners for landfill and mining applications. Environ. Geotech. 1(1), 3–21 (2014)CrossRefGoogle Scholar
  6. 6.
    Liu, Y., Bouazza, A., Gates, W.P., Rowe, R.K.: Hydraulic performance of geosynthetic clay liners to sulfuric acid. Geotext. Geomembr. 43(2), 14–23 (2015)CrossRefGoogle Scholar
  7. 7.
    Touze-Foltz, N., Bannour, H., Barral, C., Stoltz, G.: A review of the performance of geosynthetics for environmental protection. Geotext. Geomembr. 44(5), 656–672 (2016)CrossRefGoogle Scholar
  8. 8.
    Shackelford, C.D., Benson, C.H., Katsumi, T., Edil, T.B., Lin, L.: Evaluating the hydraulic conductivity of GCLs permeated with non-standard liquids. Geotext. Geomembr. 18, 133–161 (2000)CrossRefGoogle Scholar
  9. 9.
    Kashir, M., Yanful, E.K.: Hydraulic conductivity of bentonite permeated with acid mine drainage. Can. Geotech. J. 38, 1034–1048 (2001)CrossRefGoogle Scholar
  10. 10.
    Benson, C.H., Ören, A.H., Gates, W.P.: Hydraulic conductivity of two geosynthetic clay liners permeated with a hyperalkaline solution. Geotext. Geomembr. 28, 206–218 (2010)CrossRefGoogle Scholar
  11. 11.
    Gates, W.P., Bouazza, A.: Bentonite transformations in strongly alkaline solutions. Geotext. Geomembr. 28(2), 219–225 (2010)CrossRefGoogle Scholar
  12. 12.
    Hornsey, W.P., Scheirs, J., Gates, W.P., Bouazza, A.: The impact of mining solutions/liquors on geosynthetics. Geotext. Geomembr. 28, 191–198 (2010)CrossRefGoogle Scholar
  13. 13.
    Shackelford, C.D., Sevick, G.W., Eykholt, G.R.: Hydraulic conductivity of geosynthetic clay liners to tailings impoundment solutions. Geotext. Geomembr. 28, 149–162 (2010)CrossRefGoogle Scholar
  14. 14.
    Fehervari, A., Gates, W.P., Patti, A.F., Turney, T.W., Bouazza, A., Rowe, R.K.: Potential hydraulic barrier performance of cyclic organic carbonate modified bentonite complexes against hyper-salinity. Geotext. Geomembr. 44(5), 748–760 (2016)CrossRefGoogle Scholar
  15. 15.
    Ruhl, J.L., Daniel, D.E.: Geosynthetic clay liners permeated with chemical solutions and leachates. J. Geotech. Geoenviron. Eng. 123, 369–381 (1997)CrossRefGoogle Scholar
  16. 16.
    Liu, Y., Gates, W.P., Bouazza, A.: Acid induced degradation of the bentonite component used in geosynthetic clay liners. Geotext. Geomembr. 36(1), 71–80 (2013)CrossRefGoogle Scholar

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© Springer Nature Singapore Pte Ltd. 2018

Authors and Affiliations

  1. 1.Hunan Provincial Key Laboratory of Shale Gas Resource ExploitationHunan University of Science and TechnologyXiangtanChina
  2. 2.Changsha Research Institute of Mining and Metallurgy Co., Ltd.ChangshaChina

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