不同固化材料垫层在黄土中隔水能力及其垂直扩散特性

谌文武 王圣麟 李晓媛 杜昱民 杨光

谌文武, 王圣麟, 李晓媛, 杜昱民, 杨光. 2014: 不同固化材料垫层在黄土中隔水能力及其垂直扩散特性. 工程地质学报, 22(5): 779-784. doi: 10.13544/j.cnki.jeg.2014.05.01
引用本文: 谌文武, 王圣麟, 李晓媛, 杜昱民, 杨光. 2014: 不同固化材料垫层在黄土中隔水能力及其垂直扩散特性. 工程地质学报, 22(5): 779-784. doi: 10.13544/j.cnki.jeg.2014.05.01
CHEN Wenwu, WANG Shenglin, LI Xiaoyuan, DU Yumin, YANG Guang. 2014: WATER PROOF CAPABILITY AND DIFFUSION CHARACTERISTICS OF DIFFERENT STRENGTHENING MATERIALS IN LOESS IN VERTICAL DIRECTION. JOURNAL OF ENGINEERING GEOLOGY, 22(5): 779-784. doi: 10.13544/j.cnki.jeg.2014.05.01
Citation: CHEN Wenwu, WANG Shenglin, LI Xiaoyuan, DU Yumin, YANG Guang. 2014: WATER PROOF CAPABILITY AND DIFFUSION CHARACTERISTICS OF DIFFERENT STRENGTHENING MATERIALS IN LOESS IN VERTICAL DIRECTION. JOURNAL OF ENGINEERING GEOLOGY, 22(5): 779-784. doi: 10.13544/j.cnki.jeg.2014.05.01

不同固化材料垫层在黄土中隔水能力及其垂直扩散特性

doi: 10.13544/j.cnki.jeg.2014.05.01
基金项目: 

国家重点基础研究发展计划(973)项目(2014CB744700)资助

详细信息
    作者简介:

    谌文武(1966- ),男,博士,教授,博士生导师,主要从事地质工程、岩土工程及文物保护方面的科研和教学工作. Email:sungp@lzu.edu.cn

  • 中图分类号: TU444

WATER PROOF CAPABILITY AND DIFFUSION CHARACTERISTICS OF DIFFERENT STRENGTHENING MATERIALS IN LOESS IN VERTICAL DIRECTION

  • 摘要: 黄土作为地基材料时由于其湿陷性容易出现失稳现象,利用固化剂垫层改良黄土地基水稳性和强度的技术被广泛使用。本文主要通过在黄土中分别加入石灰、水泥和粉煤灰固化剂垫层的方法进行加固,测定了在垂直方向上各处的含水率、密度、干密度、土颗粒比表面积(SSA)及阳离子交换能力(CEC)的变化。试验表明石灰、水泥和粉煤灰垫层可以影响10~15cm范围内相邻土层含水率、密度、比表面积和阳离子交换能力,改变土质结构,提高土体的水稳性。改性后的土体越靠近固化剂垫层,含水率、SSA和CEC越小而密度越大。其中,石灰垫层效果最好,它能将黄土中含水率减小超过4%,密度增加1.0~1.5g cm-3,粉煤灰作用次之,水泥最弱。此外,试样土颗粒比表面积(SSA)与阳离子交换能力(CEC)存在线性递增的关系,本次试验中,3个试样中SSA与CEC之比均稳定于6.5~7.5之间。
  • [1] Gibbs H J, Holland W Y. Petrographic and engineering properties of loess[M]. Washington: United States Department of the Interior, 1960.

    [2] Derbyshire E.Geological hazards in loess terrain, with particular reference to the loess regions of China[J]. Earth-Science Reviews, 2001, 54 : 231~260.

    [3] 杨有海, 梁波,丁立. 粉煤灰与石灰、水泥拌合料的强度特性试验研究[J]. 岩土工程学报, 2001, 23 (2): 227~230.

    Yang Youhai, Liang Bo, Ding Li. Experimental study on the strength behaviors of fly ash-lime or fly ash-cement[J]. Chinese Journal of Geotechnical Engineering, 2001, 23 (2): 227~230.

    [4] 郭婷婷, 张伯平,田志高,等. 黄土二灰土工程特性研究[J]. 岩土工程学报, 2004, 26 (5): 719~721.

    Guo Tingting, Zhang Boping, Tian Zhigao, et al. Study on engineering characteristic of lime-fly ash loess[J]. Chinese Journal of Geotechnical Engineering, 2004, 26 (5): 719~721.

    [5] 王先龙. 用石灰改良高速铁路路基黄土填料化学机理分析[J]. 岩土工程技术, 2007, 21 (6): 319~323.

    Wang Xianlong. Chemical mechanism analysis on lime improvement for high speed railway loess filling[J]. Geotechnical Engineering Technique, 2007, 21 (6): 319~323.

    [6] Mathew P K,Rao S N.Effect of lime on cation exchange capacity of marine clay[J]. Journal of Geotechnical and Geoenvironmental Engineering, 1997, 123 (2): 183~185.

    [7] Rajasekaran G, Murali K, Srinivasaraghavan R. Fabric and mineralogical studies on lime treated marine clays[J]. Ocean Engineering, 1997, 24 (3): 227~234.

    [8] Rajasekaran R, Narasimha R S. Permeability characteristics of lime treated marine clay[J]. Ocean Engineering, 2002, 29 (2): 113~127.

    [9] Rajasekaran G, Narasimha R S. Compressibility behaviour of lime-treated marine clay[J]. Ocean Engineering, 2002, 29 (5): 545~559.

    [10] 宋亚. 合肥地区膨胀土的石灰改良试验研究[硕士学位论文][D]. 合肥:合肥工业大学, 2009.

    Song Ya. Experimental study on the lime-stabilized expansive soils of Hefei[D]. Hefei: Hefei University of Technology, 2009.

    [11] 李晓媛. 冻融循环条件下改性黄土力学性质研究[硕士学位论文][D]. 兰州:兰州大学, 2013.

    Li Xiaoyuan. Mechanical properties of modified loess under freeze-thaw cycles[D]. Lanzhou: Lanzhou University, 2013.

    [12] Yeliz Yukselen,Abidin Kaya. Suitability of the methylene blue test for surface area, cation exchange capacity and swell potential determination of clayey soils[J]. Engineering Geology, 2008, 102 : 38~45.

    [13] Hang P T, Brindley G W. Methylene blue absorption by clay minerals. Determination of surface areas and cation exchange capacities(clay-organic studies XVIII)[J]. Clays and Clay Minerals, 1970, 18 : 203~212.

    [14] Santamarina J C, Klein K A, Wang Y H, et al. Specific surface: determination and relevance[J]. Canadian Geotechnical Journal, 2002, 39 : 233~241.

    [15] okca E, Birand A A. Prediction of swelling potential of Ankara soils by methylene blue test[J]. Doga-Turkish Journal of Engineering and Environmental Sciences, 1993, 17 : 57~63.

    [16] okca E, Birand A A. Determination of cation exchange capacity of clayey soils by the methylene blue test[J]. Geotechnical Testing Journal, 1993, 16 (4): 518~524.
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出版历程
  • 收稿日期:  2014-06-03
  • 修回日期:  2014-08-04
  • 刊出日期:  2014-10-25

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