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。
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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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