Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry

DING Jian-wen; HONG Zhen-shun; LIU Song-yu

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Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry

更新时间：2026-06-25

- Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry
- Vol. 32, Issue 12, (2011)
- 作者机构：
  
  东南大学交通学院岩土工程研究所,南京,210096
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU411
- Online First：13 December 2011，
  
  Published：2011
- 稿件说明：
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DING Jian-wen, HONG Zhen-shun, LIU Song-yu. Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry[J]. 2011, 32(12).
DOI：

DING Jian-wen, HONG Zhen-shun, LIU Song-yu. Microstructure study of flow-solidified soil of dredged clays by mercury intrusion porosimetry[J]. 2011, 32(12). DOI：

摘要

采用压汞法对疏浚淤泥流动固化土进行了微观孔隙结构的研究，分析了固化土的孔隙体积及入口孔径分布特征与固化材料掺量及固化土龄期的关系，并将微观试验结果与固化土的物理指标和强度特性进行了比较。结果表明，采用压汞法研究疏浚淤泥流动固化土的微观孔隙空间分布是成功的，压汞试验得到的微观孔隙特征与众多学者通过宏观力学试验得出的强度规律是一致的，微观结构试验能够很好地解释宏观物理力学性状。随着固化材料掺量的增加和龄期的增长，淤泥固化土的孔隙体积和D50孔径明显减小，入口孔径分布特征亦发生了相应变化。所得流动固化土的入口孔径主要分布在0.01～10 ?m之间，最大分布孔径在0.5～2 ?m之间。

Abstract

Microstructure of the flow-solidified soil of dredged clays was studied by mercury intrusion porosimetry (MIP). The influences of the solidification agent content and curing time on the volume and entrance pore size of the voids was analyzed. The relationship between the MIP results and macroscopic behavior was compared; and the results demonstrated that the MIP is successful and the microstructure characteristics is adequate to be used to explain the macro-mechanical properties. The volume of the voids and D50 changed markedly with the solidification agent content and curing time; and the entrance pore size changed correspondingly. The distribution range of the entrance pore diameters of the flow-solidified soils are mainly from 0.01 ?m to 10 ?m; and the maximum distribution diameters are mainly from 0.5 ?m to 2 ?m.

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