Microstructure investigation in unsaturated soils: A review with special attention to contribution of mercury intrusion porosimetry and environmental scanning electron microscopy

被引：383
作者：
Romero E. [1 ]
Simms P.H. [2 ]
机构：
[1] Department of Geotechnical Engineering and Geosciences, Universitat Politècnica de Catalunya, 08034 Barcelona
[2] Department of Civil and Environmental Engineering, Carleton University, Ottawa, ON
来源：
Geotechnical and Geological Engineering | 2008年 / 26卷 / 6期
关键词：
Environmental scanning electron microscopy; Mercury intrusion porosimetry; Microstructure; Pore size distribution; Suction; Unsaturated soil;
D O I：
10.1007/s10706-008-9204-5
中图分类号：
学科分类号：
摘要：
With the advent of modern microstructural testing techniques and microstructure based constitutive models the microstructural characterisation of soils is gaining prominence. This paper reviews the history of microstructure investigation in unsaturated soils and discusses the engineering significance of this research to date. After a brief overview of the main microstructural techniques, the paper focuses on the evaluation of the current state of use and the development of two widely used techniques to study the microstructure of partially saturated soils, namely mercury intrusion porosimetry and the environmental scanning electron microscopy. The details of these techniques, their advantages and limitations, are first covered, followed by the presentation of selected test results. These results highlight the use of these techniques for understanding different hydro-mechanical behavioural features observed at macroscopic scale. Specifically, the paper shows the use of these techniques to explore the fundamental properties of water retention characteristics, water permeability, and micro and macrostructural interactions along different hydro-mechanical paths. © Springer Science+Business Media B.V. 2008.
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页码：705 / 727
页数：22
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