Volume 8 Issue 2
Apr.  2015
Turn off MathJax
Article Contents
Article Navigation >  Water Science and Engineering  > 2015  >  8(2): 151-157
Jun HE, Yu WANG, Yong LI, Xiao-chen RUAN. 2015: Effects of leachate infiltration and desiccation cracks on hydraulic conductivity of compacted clay. Water Science and Engineering, 8(2): 151-157. doi: 10.1016/j.wse.2015.04.004
Citation: Jun HE, Yu WANG, Yong LI, Xiao-chen RUAN. 2015: Effects of leachate infiltration and desiccation cracks on hydraulic conductivity of compacted clay. Water Science and Engineering, 8(2): 151-157. doi: 10.1016/j.wse.2015.04.004
shu

Effects of leachate infiltration and desiccation cracks on hydraulic conductivity of compacted clay

doi: 10.1016/j.wse.2015.04.004

  • College of Civil and Architectural Engineering, Hubei University of Technology, Wuhan 430068, PR China

Funds:  This work was supported by the National Natural Science Foundation of China (Grant No. 51008120), the Youth Chenguang Project of Science and Technology of Wuhan City (Grant No. 201271031418), and the Outstanding Young Talent Program of Hubei Province (Grant No. 2010 CDA091).
More Information
  • Corresponding author: Jun HE
  • Received Date: 2014-05-09
  • Rev Recd Date: 2014-12-30
    Abstract
  • Both cracks in clay liner and the complex composition of landfill leachate might have effects on the hydraulic conductivity of a compacted clay liner. In this study, the hydraulic conductivities of natural clay and bentonite-modified clay with and without desiccation cracks were measured, respectively, using three types of liquids as permeating liquid:   2 500 mg/L acetic acid solution, 0.5 mol/L CaCl2 solution, and tap water. When tap water was adopted as the permeating liquid, desiccation cracks resulted in increases in the average value of hydraulic conductivity: a 25-fold increase for the natural clay and a 5.7-fold increase for the bentonite-modified clay. It was also found out that the strong self-healing capability of bentonite helped to reduce the adverse impact of cracks on hydraulic performance. In contrast to tap water, simulated leachates (acetic acid and CaCl2 solutions) show no adverse effect on the hydraulic conductivities of natural and bentonite-modified clays. It is concluded that desiccation cracks and bentonite have more significant effects on hydraulic performance than simulated leachates.

     

    • FullText(HTML)
  • loading
    • References(21)
  • Albrecht, B.A., Benson, C.H., 2001. Effect of desiccation on compacted natural clays. Journal of Geotechnical and Geoenvironmental Engineering, 127 (1), 67–75. http://dx.doi.org/10.1061/(ASCE)1090-0241(2001)127:1(67).
    Arasan, S., 2010. Effect of chemicals on geotechnical properties of clay liners: a review. Research Journal of Applied Sciences, Engineering and Technology, 2 (8), 765–775.
    Benson, C.H., Trast, J.M., 1995. Hydraulic conductivity of thirteen compacted clays. Clays and Clay Minerals, 43 (6), 669–681. http://dx.doi.org/10.1346/CCMN.1995.0430603.
    Bowders, J.J., Daniel, D.E., 1987. Hydrualic conductivity of compacted clay to dilute organic chemicals. Journal of Geotechnical Engineering, 113 (12), 1432–1448. http://dx.doi.org/10.1061/(ASCE)0733-9410(1987)113:12(1432).
    Francisca, F.M., Glatstein, D.A., 2010. Long term hydraulic conductivity of compacted soil permeated with landfill leachate. Applied Clay Science, 49, 187–193. http://dx.doi.org/10.1016/j.clay.2010.05.003.
    Hamdi, N., Srasra, E., 2013. Hydraulic conductivity study of compacted clay soils used as landfill liners for an acidic waste. Waste Management, 33 (1), 60–66. http://dx.doi.org/10.1016/j.wasman.2012.08.012.
    He, J., Song, G.H., 2011. Hydraulic conductivity of clay liners under wet-dry cycling: state of the art. In: International Conference on Electric Technology and Civil Engineering, IEEE, Piscataway, pp 4174–4177. http://dx.doi.org/10.1109/ICETCE.2011.5775799.
    He, J., Wan, J., Wang, Y., 2012. Desiccation cracks and hydraulic performance of compacted clay liner via laboratory wet-dry cycling tests. Journal of Engineering Geology, 20 (3), 397–402 (in Chinese).
    He, J., Wang Y., 2013. Experimental research on fissure development law of modified clay using bentonite. Yangtze River, 44 (1), 86-89 (in Chinese).
    Kenney, T.C., Van Veen, W.A., Swallow, M.A., Sungaila, M.A., 1992. Hydraulic conductivity of compacted bentonite-sand mixtures. Canadian Geotechnical Journal, 29 (3), 364–374. http://dx.doi.org/ 10.1139/t92-042.
    Kodikara, J.K., Rahman, F., Barbour, S.L., 2002. Towards a more rational approach to chemical compatibility testing of clay. Canadian Geotechnical Journal, 39 (3), 597–607. http://dx.doi.org/10.1139/t02-003.
    Lou, Z.Y., Li, H.J., Zhao, Y.C., 2011. Physical-chemical characteristics of refractory matters in landfill leachate. Environmental Chemistry, 30 (1), 293–299 (in Chinese).
    Omidi, G.H., Thomas, J.C., Brown, K.W., 1996. Effect of desiccation cracking on the hydraulic conductivity of a compacted clay liner. Water, Air, and Soil Pollution, 89 (1-2), 91–103. http://dx.doi.org/10.1007/BF00300424.
    Peirce, J.J., Sallfors, G., Peel, T.A., Witter, K.A., 1987. Effects of selected inorganic leachates on clay permeability. Journal of Geotechnical Engineering, 113 (8), 915–919. http://dx.doi.org/10.1061/(ASCE)0733-9410(1987)113:8(915).
    Petrov, R.J., Rowe, R.K., Quigley, R.M., 1997. Comparison of laboratory-measured GCL hydraulic conductivity based on three permeameter types. Geotechnical Testing Journal, 20 (1), 49–62. http://dx.doi.org/10.1520/GTJ11420J.
    Rayhani, M.H.T., Yanful, E.K., Fakher, A., 2007. Desiccation-induced cracking and its effect on the hydraulic conductivity of clayey soils from Iran. Canadian Geotechnical Journal, 44 (3), 276–283. http://dx.doi.org/10.1139/T06-125.
    Scalia, J., Benson, C.H., 2011. Hydraulic conductivity of geosynthetic clay liners exhumed from landfill final covers with composite barriers. Journal of Geotechnical and Geoenvironmental Engineering, 137 (1), 1–13. http://dx.doi.org/10.1061/(ASCE)GT.1943-5606.0000407.
    Shackelford, C.D., Sevick, G.W., Eykholt, G.R., 2010. Hydraulic conductivity of geosysnthetic clay liners to tailings impoundment solutions. Geotextiles and Geomembranes, 28 (2), 149–162. http://dx.doi.org/10.1016/j.geotexmem.2009.10.005.
    Tang, C.S., Cui, Y.J., Shi, B., Tang, A.M., Liu, C., 2011. Desiccation and cracking behaviour of clay layer from slurry state under wetting-drying cycles. Geoderma, 166 (1), 111–118. http://dx.doi.org/10.1016/j.geoderma.2011.07.018.
    Xu, C., Li, Z.B., Gao, Y.B., 2009. Influence of solution characteristics on swelling and hydraulic performance of geosynthetic clay liner. Journal of Tongji University (Natural Science), 37 (1), 36-40 (in Chinese).
    Yilmaz, G., Yetimoglu, T., Arasan, S., 2008. Hydraulic conductivity of compacted clay liners permeated with inorganic salt solutions. Waste Management and Research, 26 (5), 464–473. http://dx.doi.org/10.1177/0734242X08091586.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF
    XML

    Article Metrics

    Article views (1522) PDF downloads(1611) Cited by()
    Proportional views
    Related

    Copyright © 2009 Editorial office of Water Science and Engineering 苏ICP备12023610号-1

    Supported by: Beijing Renhe Information Technology Co. Ltd   support: info@rhhz.net

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return