Advanced Search
    Volume 35 Issue zk1
    Turn off MathJax
    Article Contents
    Abstract
    References
    Related Articles
    CHEN Yu-long. Microstructure of expansive soil from Yunnan Province[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 334-339.
    Citation: CHEN Yu-long. Microstructure of expansive soil from Yunnan Province[J]. Chinese Journal of Geotechnical Engineering, 2013, 35(zk1): 334-339.
    shu

    Microstructure of expansive soil from Yunnan Province

    • Department of Civil Engineering, the University of Tokyo, Tokyo 113-8656, Japan

    More Information
    • Received Date: February 27, 2013
    • Published Date: July 18, 2013
      Graphical Abstract
      • Abstract
    • For highways, how to address expansive soils is one of the important problems, and it is also one of the most prominent geologic disasters in the engineering construction of highways because they shrink and swell according to their moisture content. By means of polarizing microscope, the microstructure of series of weak expansive soil samples is studied, and the classification according to the microstructure features of expansive soils in Yunnan Province is presented. The effects of microstructural feature on expansive soils are evaluated. Moreover, the internal factors for expansion and contraction and the relationship between microstructures and engineering properties of expansive soils were analyzed. The microscopic images show that the arrangement of soil particles can be divided into turbulent flow structures，laminar flow structure，granular structure and cement structure. The constituents of soil particles include matrix，aggregates and transitional links to objects. Due to the loose particles and the large porosity, the water can penetrate and drain out easily to create the necessary conditions for moisture migration of the aggregates, which explains the reason of swell-shrink of the expansive soils based on the microstructure. The microscopic images of the modified expansive soils display that the lime and fly ash have the flocculation effect on the cohesive particles to change soil particles in the microstructure, and to reduce the cohesive particles，and the increasing calcium ions caused by lime and fly ash make the connection more strong, so that they reduce the potential of expansion and contraction. The engineering properties of the modified expansive soils are also improved.
      • FullText(HTML)
      • References (1)
    • 漆宝瑞,秦小林. 膨胀土的膨胀系数、收缩系数求解及应用[J]. (铁道标准设计), 2005(6): 11-13.(QI Bao-rui,QIN Xiao-lin. Derivation and application on expansion coefficient and contraction[J]. Railway Standard Design, 2005(6): 11-13.(in Chinese))
      ZHA Fu-sheng,LIU Song-yu,DU Yan-jun,et al. Behavior of expansive soils stabilized with fly ash[J]. Natural Hazards, 2008, 47: 509-523.
      PAMELA Jo Thomas. Quantifying properties and variability of expansive soils in selected map units[D]. USA: Virginia Polytechnic Institute and State University, 1998.
      李 振,邢义川,张爱军. 膨胀土的浸水变形特性[J]. (水利学报), 2005, 36(11): 1385-1391.(LI Zhen,XING Yi-chuan,ZHANG Ai-jun. Inundation deformation characteristics of expansive soils[J]. Journal of Hydraulic Engineering, 2005, 36(11): 1385-1391. (in Chinese))
      谭罗荣,孔令伟. 膨胀土膨胀特性的变化规律研究[J]. (岩土力学), 2004, 25(10): 1554-1559.(TAN Lou-rong,KONG Ling-wei. Study on variation regularity of swelling behavior of expansive soil[J]. Rock and Soil Mechanics, 2004, 25(10): 1554-1559. (in Chinese))
      陈生水,郑澄锋,王国利. 膨胀土边坡长期强度变形特性和稳定性研究[J]. (岩土工程学报), 2007, 29(6): 796-799.(CHEN Sheng-shui,ZHENG Cheng-feng,WANG Guo-li. Researches on long-term strength deformation characteristics and stability of expansive soil slopes[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(6): 796-799. (in Chinese))
      杨和平,张 锐,郑健龙. 有荷条件下膨胀土的干湿循环胀缩变形及强度变化规律[J]. (岩土工程学报), 2006, 28(11): 1936-1941.(YANG He-ping,ZHANG Rui,ZHENG Jian-long. Variation of deformation and strength of expansive soil during cyclic wetting and drying under loading condition[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(11): 1936-1941. (in Chinese))
      叶为民,张亚为,梅正君,等. 汉十高速公路弱膨胀土非饱和渗透性试验研究[J]. (岩石力学与工程学报), 2010, 29(增刊2): 3967-3971.(YE Wei-min,ZHANG Ya-wei,MEI Zheng-jun,et al. Experimental study of unsaturated permeability of weak expansive soil obtained from Wuhan—Shiyan Highway Slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29(S2): 3967-3971. (in Chinese))
      徐 彬,殷宗泽,刘述丽. 膨胀土强度影响因素与规律的试验研究[J]. (岩土力学), 2011, 32(1): 44-50.(XU Bin,YIN Zong-ze,LIU Shu-li. Experimental study of factors influencing expansive soil strength[J]. Rock and Soil Mechanics, 2011, 32(1): 44-50. (in Chinese))
      毛天尔,夏 林. 鄂北膨胀土的微组构特征试验研究[J]. (华中科技大学学报(城市科学版)), 2010, 27(2): 48-52.(MAO Tian-er,XIA Lin. Experimental research on microstructure of expansive soil in north of hubei province[J]. Journal of Huazhong University of Science and Technology (Urban Science Edition), 2010, 27(2): 48-52. (in Chinese))
      MITCHELL J K. Fundamentals of soil behavior[M]. 2nd ed. New York: John Wiley and Sons Inc, 1993.
      LAMBER W T. Structure of compacted clay[J]. Journal of the Soil Mechanics and Foundation Division, ASCE, 1958, 84(SM2): 1-34.
      SEED H B,CHAN C K. Structure and strength characteristic of compacted clays[J]. Journal of the Soil Mechanics and Foundation Division, ASCE, 1959, 85(SM5): 87-128.
      SMART P. Optical microscopy and soil structure[J]. Nature, 1966, 210: 1400-1406.
      MORGENSTEM N R,TCHALENKO J S. Microscopic structure in Kaolin subjected to direct shear[J]. Géotechnique, 1967, 17(4): 309-328.
      胡瑞林. 黏性土微观结构定量模型及其工程地质特性研究[M].北京:地质出版社, 1995.(HU Rui-lin. Quantitative model of microstructure of clay and its engineering properties[M].Beijing:Geology Publishing House, 1995. (in Chinese))
      施 斌,李生林. 击实膨胀土微结构与工程特征的关系[J].(岩土工程学报), 1988, 10(6): 80-87.(SHI Bin,LI Sheng-lin. Relationship between microstructure of compacted expansive soil and its engineering properties[J]. Chinese Journal of Geotechnical Engineering, 1988, 10(6): 80-87. (in Chinese))
      戴绍斌,黄 俊,夏 林. 鄂北膨胀土的矿物组成和化学成分分析[J]. (岩土力学), 2005, 26(增刊1) : 296-299.(DAI Shao-bin,HUANG Jun,XIA Lin. Analysis of mineral composition and chemical components of expansive soil in North Hubei[J]. Rock and Soil Mechanics, 2005, 26(S1): 296-299. (in Chinese))
      • Related Articles

    • Related Articles

      [1]CHU Zhao-fei, LIU Bao-guo, LI Xu, ZHANG Ning. Comparison between quantile value method and partial factor method for stability evaluation of soil slopes[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(1): 106-115. DOI: 10.11779/CJGE201701009
      [2]LI Xi, ZHANG Sheng, SHENG Dai-chao, MA Xin-yan. Reasonable sample capacity for grain-size analysis tests based on sampling reliability[J]. Chinese Journal of Geotechnical Engineering, 2016, 38(11): 2122-2127. DOI: 10.11779/CJGE201611024
      [3]Reliability of underground caverns based on genetic algorithm and support vector machine[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(7).
      [4]CAO Wengui, ZHANG Yongjie. Study on reliability model of fuzzy probability of underground structure with interval-truncation approach[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(10): 1455-1459.
      [5]ZHAO Shougang, CHANG Xiangqian, PAN Shu. Reliability analysis of seepage stability on standard dyke of Yellow River[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(5): 684-689.
      [6]ZHANG Wenju, ZHAO Qihua, LIU Jingjing. Reliability design of anchoring depth for friction piles[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(12): 2153-2155.
      [7]LIU Zhixiang, LI Xibing, ZHANG Yiping. Reliability analysis of high level backfill based on chaotic optimization[J]. Chinese Journal of Geotechnical Engineering, 2006, 28(3): 348-352.
      [8]WU Peng, GONG Weiming, LIANG Shuting. Reliability of self-balanced test method for determining bearing capacity of piles[J]. Chinese Journal of Geotechnical Engineering, 2005, 27(5): 545-548.
      [9]Wang Mingwu, Luo Guoyu. Application of reliability analysis to assessment of sand liquefaction potential[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(5): 542-544.
      [10]Wang Jiachen, Tan Wenhui, Ning Ke. The reliability research on the working slope of North Surface Coal Mine of Yima Coal Administration[J]. Chinese Journal of Geotechnical Engineering, 2000, 22(1): 108-111.
      • Supplements (0)

    Catalog

      Get Citation
      PDF
      XML
      Article views PDF downloads Cited by()
      Related
      Website 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