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一种新固化材料固化滨海氯盐渍土的试验研究

程寅, 李战国, 邓晓轩, 黄新

程寅, 李战国, 邓晓轩, 黄新. 一种新固化材料固化滨海氯盐渍土的试验研究[J]. 岩土工程学报, 2011, 33(8): 1240-1245.
引用本文: 程寅, 李战国, 邓晓轩, 黄新. 一种新固化材料固化滨海氯盐渍土的试验研究[J]. 岩土工程学报, 2011, 33(8): 1240-1245.
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CHENG Yin, LI Zhan-guo, DENG Xiao-xuan, HUANG Xin. Experimental study on a new stabilizer for stabilizing coastal chlorine soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(8): 1240-1245.
Citation: CHENG Yin, LI Zhan-guo, DENG Xiao-xuan, HUANG Xin. Experimental study on a new stabilizer for stabilizing coastal chlorine soil[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(8): 1240-1245.
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一种新固化材料固化滨海氯盐渍土的试验研究  English Version

  • 1. 北京航空航天大学，北京 100191 ； 2. 北京工业大学城市与工程安全减灾省部共建教育部重点实验室，北京 100022

基金项目: 国家自然科学基金项目 ( 50278007 )
详细信息
    作者简介:

    程 寅 (1984 – ) ，男，浙江衢州人，博士研究生，从事软土固化研究。

  • 中图分类号: TU472.4

Experimental study on a new stabilizer for stabilizing coastal chlorine soil

  • 1. Beihang University, Beijing 100191, China; 2. Key Lab of . Urban Securing and Disaster Engineering, Beijing University of Technology, Beijing 100022, China

摘要

    摘要
  • 摘要: 中国滨海有大面积含盐量较高的吹填淤泥需固化处理。现 采用自制固化剂 A 与普通硅酸盐水泥对含盐量为 8% 的天津滨海新区吹填淤泥 TT 进行固化试验，当固化剂掺入比为 10% 和 15% 时，采用自制固化剂 A 的固化土强度分别比用普硅水泥的固化土强度提高了 2.4 倍和 1.7 倍。采取 SEM 、 XRD 和 EDXA 等试验对各固化土进行对比分析，结果表明：固化剂 A 固化 TT 固化土时，除产生了与水泥水化物相同的水化产物外，还与 TT 中的 NaCl 共同作用生成水化产物 Ca4Al2Cl2O6?10H2O ； Ca4Al2Cl2O6?10H2O 体积膨胀填充土中空隙，是吹填淤泥固化土的强度大幅提高的原因之一。
    Abstract: There is a large area of high saline dredger fill in China’s coastal areas that are needed to be stabilized. Self-made stabilizer A and portland cement are adopted to stabilize the dredger fill collected from the Tianjin Binhai New Area. The salinity of the dredger fill is 8%. Under the mixing ratio of 10% and 15%, the strengths of the stabilized soil by means of the stabilizer A are increased by 2.4 times and 1.7 times than those by use of the portland cement, respectively. The results from the s canning electron microscopy ( SEM), X-ray Diffraction ( XRD) and energy-dispersive X-ray ( EDXA) tests show that when using the stabilizer A to stabilize the soil sample TT, besides generating similar hydration products with portland cement, the stabilizer A can react with NaCl in the soil sample TT to generate Ca4Al2Cl2O6?10H2O, which greatly increases the strength of the stabilized dredger fill by its solid volume expansion.
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    • 参考文献(14)
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  • 发布日期:  2011-08-14

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