In situ observations of the swelling of bentonite aggregates in NaCl solution

Suzuki, Satoru; Prayongphan, Somchai; Ichikawa, Yasuaki; Chae, Byung-Gon

doi:10.1016/j.clay.2004.11.001

Cited by 108 publications

(26 citation statements)

References 19 publications

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“…Viola et al (2005) used FESEM to observe at high magnification the microstructure of clay tactoids and their alignment at different hydration states. Suzuki et al (2005) used a laser scanning microscope combined with digital image analysis to investigate the swelling at mesoscopic scale of bentonite aggregates exposed to various NaCl solutions.…”

Section: Background Advantages and Limitationsmentioning

confidence: 99%

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

2008

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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.

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Section: Background Advantages and Limitationsmentioning

confidence: 99%

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

2008

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“…Heller and Keren (2001) found that a free electrolyte clay suspension had a high apparent viscosity due to the edge-to-edge association between Na-rich montmorillonite platelets, whereas face-to-face associations prevailed at high NaCl concentrations with a lower apparent viscosity. Suzuki et al (2005) also found that the expansion ratio of bentonite aggregates decreased with NaCl concentration.…”

Section: Introductionmentioning

confidence: 90%

“…In clay science, it is well-known that bentonite viscosity could be reduced by using salt water (Komine et al, 2009;Lagaly and Ziesmer, 2003;Suzuki et al, 2005). Therefore, in this study rheology measurements were firstly conducted to investigate the effect of different cations on the viscosity of bentonite suspension at pH 9.…”

Section: Effect Of Cations On Bentonite Viscositymentioning

confidence: 99%

The role of cations in copper flotation in the presence of bentonite

Wang

Peng

Nicholson

et al. 2016

Minerals Engineering

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“…The swelling pressures of bentonite in NaCl solutions have been discussed by many investigators, and the results showed it decreases with the salinity of the solution. (Karnland, 1998;Suzuki et al 2005;Lee et al, 2012), whilst most of these swelling pressure measurements were carried out for Na-bentonite, and focused on the effects of dry density, concentration of NaCl, and temperature (Villar et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Preliminary Study of Pore Water Salinity Effects on the Swelling Behavior of Ca-Bentonite

Zhang

Deng

Zhang

et al. 2014

Soil Behavior and Geomechanics

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ABTRACT: Many researches on the hydro-mechanical behaviors of the bentonite have been conducted in recent years, as it is not only a main kind of clay minerals but also an effective self-sealing material in geo-environmental engineering. The swelling pressure of bentonite depends on its density, pureness and pore water solution. To further investigate the pore water effect on the swelling pressure and behavior of bentonite, a series of compacted samples with a certain density and solutions (deionized water, and solutions with Na + /Ca 2+ /Mg 2+ ions at concentrations) were prepared first, and then installed into the oedometer cell to measure its swelling pressure. With the obtained results, the relations among the swelling behavior, pore water types and concentrations were discussed in this study where parameters (e.g. final water content or ions concentration) were adopted to clarify the pore water effect.

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In situ observations of the swelling of bentonite aggregates in NaCl solution

Cited by 108 publications

References 19 publications

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

Microstructure Investigation in Unsaturated Soils: A Review with Special Attention to Contribution of Mercury Intrusion Porosimetry and Environmental Scanning Electron Microscopy

The role of cations in copper flotation in the presence of bentonite

Preliminary Study of Pore Water Salinity Effects on the Swelling Behavior of Ca-Bentonite

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