Advanced Search
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊
Volume 33 Issue 8
Turn off MathJax
Article Contents
Abstract
References
YAN Xiao-qing, FANG Ying-guang, ZHANG Ping. Experiment study on the effects of bentonite on the micropore structure characteristics of soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(8): 1302-1307.
Citation: YAN Xiao-qing, FANG Ying-guang, ZHANG Ping. Experiment study on the effects of bentonite on the micropore structure characteristics of soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(8): 1302-1307.
shu

Experiment study on the effects of bentonite on the micropore structure characteristics of soil

  • 1. School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510641, China; 2. State Key Laboratory of Subtropical Building Science, Guangzhou 510641, China

More Information
  • Published Date: August 14, 2011
    Graphical Abstract
    • Abstract
  • The micropore structure characteristics have significant influence on permeability of the soil, and bentonite is high anti-seepage material, which is added into the soil to reduce the peamiability by changing the pore-scale distrbution and pore characteristics of the soil. The micropore structure characteristics of the soil added with different bentonite contents are measured by the mercury intrusion porosimetry (MIP). The test results show that just adding a little bentonite can reduce the quantity of the large pore abruptly. With the increase of bentonite content, the pore-scale distribution changes gradually, the quantity of the middle pore increases, the quantities of the small pore, the micropore and the supermicro-pore increase gradually, and the pore size distribution density function changes from three-model to bi-model while the pore diameter size corresponding to the peak decreases. It is proved that the pore characteristics of the same void ratio are various according to the test results, so the void ratio which is a macroscope parameter can not represent the pore characteristics of the soil perfectly and it is necessary to introduce other microscope parameters to describe the pore characteristics of the soil. The conclusions have certain referential value for the design and construction of the anti-seepage (infiltration) projects.
    • FullText(HTML)
    • References (19)
  • [1]
    MITCHELL J K. Fundamentals of soil behavior[M]. New York: John Wiley and Sons Inc, Second Edition, 1993.
    [2]
    YE Wei-min, CUI Yu-jun, QIAN Li-xin, et al. An experimental study of the water transfer through confined compacted GMZ bentonite[J]. Engineering Geology, 2009, 108 (3-4): 169 – 176.
    [3]
    陈 宝 , 叶为民 , 等 . 高庙子膨润土的水土特征曲线 ( 英文 ) [J]. 岩石力学与工程学报 , 2006, 25 (4): 788 – 793. (CHEN Bao, YE Wei-min, et al. Bentonite Soil-Water characteristic curves of Gaomiaozi[J]. Chinese Journal of Rock Mechanics and Engineering, 2006, 25 (4): 788 – 793. (in Chinese))
    [4]
    CHAPUIS R P. Sand-bentonite liners: predicting permeability from laboratory tests[J]. Canadian Geotechnical Journal, 1990, 27 (1): 47 – 57.
    [5]
    SIVAPULLAIAH P V, SRIDHARAN A, STALIN V K. Hydraulic conductivity of bentonite-sand mixtures[J]. Canadian Geotechnical Journal, 2000, 37 (2): 406 – 413.
    [6]
    ROMERO E, SIMMS P H. Microstructure investigation in unsaturated soils: a review with special attention to contribution of mercury intrusion porosimetry and environmental scanning electron microscopy[J]. Journal of Geotechnical and Geological Engineering, ASCE, 2008, 26 (6): 705 – 727.
    [7]
    CHENG X H, HANS J, et al. A combination of ESEM, EDX and XRD studies on the fabric of dutch organic clay from Ostva ardersplassen (netherlands) and its geotechnical implications[J]. Applied Clay Science, 2004, 25 : 179 – 185.
    [8]
    GB/T50123 — 1999 土工试验方法标准 [S]. 1999. (GB/T50123 — 1999 Standard for soil test method[S]. 1999. (in Chinese))
    [9]
    WASHBURN E W. Note on a method of determining the distribution of pore sizes in a porous material[C]// Proceedings of the National Academy of Sciences USA, 1921, 7 (4): 115 – 116.
    [10]
    PENUMADU D, DEAN J. Compressibility effect in evaluating the pore-size distribution of kaolin clay using mercury intrusion porosimetry[J]. Canadian Geotechnical Journal, 2000, 37 (2): 393 – 405.
    [11]
    ASTM D4404-84 Standard test method for determination of pore volume and pore volume distribution of soil and rock by mercury intrusion porosimetry[R]. 2004.
    [12]
    GB/T 21650.1-2008, 压汞法和气体吸附法测定固体材料孔径分布和孔隙度 第 1 部分：压汞法 (2008) [S]. 2008. (GB/T 21650.1-2008, Pore size distribution and porosity of solid materials by mercury porosimetry and gas adsorption-Part 1: Mecury porpsimetry (2008) [S]. 2008. (in Chinese))
    [13]
    DELAGE P, LEFEBVRE G. Study of the structure of a sensitive champlain clay and of its evolution during consolidation[J]. Canadian Geotechnical Journal, 1984, 21 (1): 21 – 35.
    [14]
    DE KIMPE C R. Effect of air drying and critical point drying on the porosity of clay soils[J]. Canadian Geotechnical Journal,1984, 21 (1): 181 – 185.
    [15]
    SHEAR D L, OLSEN H W, NELSON K R. Effects of desiccation on the hydraulic conductivity versus void ratio relationship for a natural clay[M]. Washington: National Academy Press, 1993: 1365 – 1370.
    [16]
    KODIKARA J, BARBOUR S L, FREDLUND D G. Changes in clay structure and behavior due to wetting and drying[C]// Proceedings of the 8th Australian-New Zealand conference on Geomechanics, 1999: 179 – 186.
    [17]
    LAPIERRE C, LEROUEIL S, LOCAT J. Mercury intrusion and permeability of louisville clay[J]. Canadian Geotechnical Journal, 1990, 27 (6): 761 – 773.
    [18]
    DELAGE P, MARCIAL D, CUI Y J, et al. Ageing effects in a compacted benonite: a microstructure approach[J]. Géotechnique, 2006, 56 (5): 291 – 304.
    [19]
    LI X, ZHANG L M. Characterization of dual-structure pore-size distribution of soil[J]. Canadian Geotechnical Journal, 2009, 46 (2): 129 – 141.
    • Related Articles
  • Supplements (0)

Catalog

    Get Citation
    PDF
    XML
    Article views (1472) PDF downloads (1202) Cited by()
    Related
    Copyright © 2010 Editorial By Chinese Journal of Geotechnical Engineering 苏ICP备05007122号-11公安联网备案号：32010602011255
    Editorial Office address：34 Hujuguan,Nanjing 210024,ChinaPostal Code：210024Tel：025-85829534，85829556E-mail: ge@nhri.cn

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return