Volume 13 Issue 1
Apr.  2011
Turn off MathJax
Article Contents
ZHANG Yongshuang, QU Yongxin. 2005: CEMENTS OF SAND LOESS AND THEIR CEMENTATION IN NORTH SHAANXI AND WEST SHANXI. JOURNAL OF ENGINEERING GEOLOGY, 13(1): 18-28.
Citation: ZHANG Yongshuang, QU Yongxin. 2005: CEMENTS OF SAND LOESS AND THEIR CEMENTATION IN NORTH SHAANXI AND WEST SHANXI. JOURNAL OF ENGINEERING GEOLOGY, 13(1): 18-28.

CEMENTS OF SAND LOESS AND THEIR CEMENTATION IN NORTH SHAANXI AND WEST SHANXI

Funds:

  • Received Date: 2004-08-05
  • Rev Recd Date: 2004-12-30
  • Publish Date: 2005-01-22
  • Based on field investigation, using multiple methods including SEM, XRD, as well as soil physics and soil chemistry methods, the particle composition, aggregate, and cement composition were measured on 48 samples of Malan loess from 12 counties of north Shaanxi province and west Shanxi province. The test results indicate that the cements, including clay minerals, super fine-grained carbonate, free oxides, and organic materials, mainly exist as a aggregate coat on the grain surface, and form weak cementation between the frameworks of sand loess. The clay minerals and organic materials in sand loess have weak cementation only in dry state because it is not stable in water. Calcium carbonates (CaCO 3) in sand loess exist as both coarse grains and fine grains, forming the framework and cementation. The super fine grain is a kind of irreversible cementing material, which plays an important role in the course of aggregate formation, preservation, as well as connection between aggregates and debris grains. The contents of amorphous oxides (SiO 2、Fe 2O 3、Al 2O 3) are low, but they should not be ignored in the cementation of sand loess because of their interaction with other cements on the grain surface. Based on the statistic analysis, the aggregation coefficient can reflect the cementation degree of sand loess, which establishes a bridge (strong relationship) between cementation and physical-mechanical properties of loess. The study of cement composition and their cementation mechanisms not only helps us to have a better understating of the engineering properties of sand loess, but also provides a better insight into the supergene geochemical environment of loess plateau of China.
  • loading
  • [1]  王永焱,林在贯.黄土的结构与物理力学性质
    [M].北京:科学出版社,1990.W ang Yongyan,L in Zaiguan.Research on the structure and physico-mechanical p roperties of loess.Beijing:Science p ress,1990.


    [2]  雷祥义.黄土显微结构类型与物理力学性质指标之间的关系
    [J].地质学报,1989,63(2):182~190.Lei Xiangy.iResearch on relation between the types ofloess m icrostructure and physico-mechanical indexes.Acta Geologica Sinica,1989,63(2):182~190.


    [3]  高国瑞.黄土湿陷变形的结构理论
    [J].岩土工程学报,1990,12(1):1~9.Gao Guoru.iThe structural theoryfor research of loess collap se deformation.Chinese Journal of Geotechnical Engineering,1990,12(1):1~9.


    [4]  胡瑞林,官国琳,李向全.黄土湿陷性的微结构效应
    [J].工程地质学报,1999,7(2):161~167.Hu Ruilin,Guan Guolin,L iXiangquan.1999.M icrostructureeffect on the subsidence of loess.Journal of Engineering Geology,1999,7(2):161~167.


    [5]  谢定义.试论我国黄土力学研究中的若干新趋向
    [J].岩土工程学报,2001,23(1):3~13.Xie D ingy.iExp loration of some new tendencies in research of loess soil mechanics.Chinese Journal of Geotechnical Engineering,2001,23(1):3~13.


    [6]  P.Lu,.IF.Jefferson,M.S.Rosenbaum,et a.l.Fractal characteristics of loess formation:evidence from laboratory experiments
    [J].Engineering Geology,2003,69:287~293.


    [7]  曲永新,张永双,陈情来.陕北晋西黄土滑塌灾害的初步研究———以西气东输工程为例
    [J].工程地质学报,2001,9(3):233~240.QuYongxin,ZhangYongshuang,ChenQ inglai.Prelim inary study onloess slump ing between northern Shaanxi and western Shanxi—Taking the p ipeline of transporting gas from west to eastas examp le.Journal of Engineering Geology,2001,9(3):233~240.


    [8]  吴芝兰,曲永新.微团聚体分析在工程地质研究中的应用
    [J].工程地质学报,1997,5(3):282~288.W u Zhilan,QuYongxin App lication of m icroaggregate compositionanalysis to engineering geological research.Journal of EngineeringGeology,1997,5(3):282~288.


    [9]  李小刚.甘肃景电灌区土壤团聚体特征研究
    [J].土壤学报,2000,37(2):263~270.L i Xiaogang.The characteristics of soil aggregate in J ingtai electric-irrigating area of Gansu.Acta Pedologica Sinica,2000,37(2):263~270.


    [10]  刘东生等.黄土与环境
    [M].北京:科学出版社,1985.L iu Tungsheng.Loess and the Environmen.tBeijing:SciencePress,1985.


    [12]  林崇义.黄土的结构特性.黄土基本性质的研究
    [M].北京:科学出版社,1961.L in Chongy.iResearch on loess basic p roperties:the structuralp roperty of loess.Beijing:Science p ress,1961.


    [14]  燕守勋,曲永新,韩胜杰.蒙皂石含量与膨胀土膨胀势指标相关关系研究
    [J].工程地质学报,2004,12(1):74~82.Yan Shouxun,Qu Yongxin,Han Shengjie.A study on the relationship between smectite content and swell potential indices.Journal of engineering geology,2004,12(1):74~82.


    [15]  殷跃平,胡瑞林.三峡库区巴东组(Tb)紫红色泥岩工程地质特征研究
    [J].工程地质学报,2004,12(2):124~135.Yin Yuep ing,Hu Ruilin.Engineering geological characteristics ofpurp lish-red mudstone of m iddle tertiary formation at the Three-Gorges reservoir.Journal of engineering geology,2004,12(2):124~135.


    [16]  张永双,曲永新.黄土高原马兰黄土粘土矿物的定量研究
    [J].地质论评,2004,50(4).6Zhang Yongshuang,Qu Yongxin.Quantitative research on claym ineral compositionof Malan loess from loess p lateau in China.Geological Review,2004,50(4):in p ress.

  • 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
    Article views (3659) PDF downloads(985) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint