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INTERNATIONAL SOCIETY FOR SOIL MECHANICS AND …

and hydraulic conductivity of bentonite based buffer and backfill materials. They also observed the swelling behavior of bentonite by using scanning electron microscope which can control the …

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Microstructure and anisotropic swelling behaviour of …

mCT was used to examine the 3D internal microstructure of the compacted bentonite/sand mixtures. mCT is a non-destructive observation technique that has been proven to be useful in …

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In situ observations of the swelling of bentonite aggregates in …

Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images were used to observe the surface microscopic morphology of the original and alkaline …

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Bentonite microstructure and saturation evolution in …

In the ESEM observations, target relative humidities (and thus total 8 suctions) were imposed directly in the ESEM chamber to observe the effect of hydraulic path 9 on the microstructure.

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3D-microstructure analysis of hydrated bentonite with cryo-stabilized

The samples are transferred to the cryo-microscope with a VCT 100 system (Leica/BAL-TEC). The Cryo-SEM investigations are then performed with a Zeiss Gemini 1530 …

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In situ observations of the swelling of bentonite aggregates …

The microstructural evolution and hydraulic conductivity of bentonite in NaCl solution is investigated by in situ laser scanning microscopy (LSM). Upon exposure to saline solution, …

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Hydro-microstructural behaviors of zeolite/active carbon …

Scanning electron microscope (SEM) observations indicated that the silty clay-bentonite backfills became increasingly loose with increasing bentonite content, owing to the …

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An experimental study of the water transfer through confined compacted

Environmental Scanning Electron Microscope (ESEM) was used for microstructure observation, the primary advantage of this technique compared to conventional Scanning …

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ESEM observations of compacted bentonite submitted to …

The MX80 bentonite (bentonite of Wyoming) contains about 85% of montmorillonite and 15% of accessory minerals. ... ESEM (environmental scanning electron microscope) …

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Experimental characterization of retention properties …

la bentonite compacte sous gonflement libre sont étudiées lors du mouillage et du séchage. Pour l'observation de la microstructure, on utilise la porosimétrie à intrusion de mercure (MIP) et le …

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Microstructure and micro/macro-diffusion behavior of tritium in bentonite

We first presented a 3-D microscope observation by a confocal laser scanning microscope (CLSM) of bentonite to specify local geometrical characteristics. Second, we …

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Microstructure and micro/macro-diffusion behavior of …

We first presented a 3-D microscope observation by a confocal laser scanning microscope (CLSM) of bentonite to specify local geometrical characteristics. Second, we …

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Experimental study on swelling characteristics of sand-bentonite …

The following conclusions were obtained through this study. (i) The swelling characteristics of sand-bentonite mixtures is dependent on the dry density and bentonite content of mixtures. (ii) …

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Fractal characteristics of pore structure of compacted …

In this paper, we aim to clarify microstructure of bentonite from Cerny vrch deposit in the Czech Republic. We adopt results of ESEM and MIP experiments performed at various …

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Experimental Studies on Swelling and Non-Swelling Bentonites

(ii) From observation with the scanning electron microscope, we found that the voids of mixtures are filled up by the volume increase when bentonite absorbs water.

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Simplified evaluation on hydraulic conductivities of sand–bentonite …

Komine and Ogata (1999) observed swelling behavior of bentonite, as shown in Fig. 4, using a scanning electron microscope. It can control the temperature and vapor pressure …

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Mineralogical and physico-chemical characterization of bentonite …

Scanning electron microscope observations show stacked overlaid layers and display aggregates of bentonite grains, spherical and with a heterogeneous dimension, with a …

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Swelling–shrinkage measurements of bentonite using …

Swelling–shrinkage measurements of bentonite using coupled environmental scanning electron microscopy and digital image analysis ... was estimated using an …

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Fundamental study on the effect of an orientation of clay …

To evaluate the effects of smectite content and the compacted direction of bentonite on the orientation properties of clay particles and diffusive pathway in compacted bentonite, …

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(PDF) Microscopic analysis of bentonite used for adsorption …

Bentonite is considered a great candidate as an adsorbent material for heavy metal ions such as Pbin aqueous solution due to its typically elevated surface ... All observations of Arctic warming …

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Observation of swelling behavior of bentonite by new electron microscope.

Article "Observation of swelling behavior of bentonite by new electron microscope." Detailed information of the J-GLOBAL is an information service managed by the Japan Science and …

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The formation of a structural framework in gelled Wyoming bentonite …

SWy-2 was diluted in water and a moderately salty aqueous solution and was studied with the aid of a synchrotron-powered transmission X-ray microscope (TXM) and …

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Observation of Microstructures of Compacted Bentonite …

. It is therefore necessary to study the microstruc-tures of compacted bentonite in a water-saturated state. Extensive studies have been made to clarify the mi-crostructures of compacted …

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In situ observations of the swelling of bentonite aggregates …

The microstructural evolution and hydraulic conductivity of bentonite in NaCl solution is investigated by in situ laser scanning microscopy (LSM). Upon exposure to saline solution, the …

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Microscope observation of cracks of clay | E3S Web of …

Microscope observation of cracks of clay. Chen Liang 1, Yilin Gui 1 * and Cees van der Land 2. 1 Newcastle University, School of Engineering, Newcastle upon Tyne, United Kingdom ... kaolin …

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Microstructure of saturated bentonites characterized by X …

The X-ray CT observations of the bentonite–quartz sand mixtures show that 'vacant pores' and 'bentonite– water complexes' of the bentonite samples after water permeation are …

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Evaluation and prediction of swelling properties of bentonite …

Then, the microstructure of the bentonite was examined using scanning electron microscopy (SEM) both before and after conducting the expansion test. ... This observation …

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Imaging of mineral-enriched biochar by FTIR, Raman and …

The FTIR and Raman results are presented with results from scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM–EDX), and X-ray photoelectron …

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Bentonite

BENTONITE. Bentonite is a type of montmorillonite clay widely employed as a fining agent. It is used in clarifying juice and wines, in removing heat-unstable proteins, and in limiting the …

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Material properties of kaolin and bentonite

Download scientific diagram | Material properties of kaolin and bentonite from publication: Microscope observation of cracks of clay | Clay has wide application in engineered barriers. However, it ...

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(PDF) Microscopic Observations of Pore Space Geometry …

The spatial arrangement of sand grains and bentonite fabric at different hydration states was observed with environmental scanning electron microscopy (ESEM) and field …

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In situ X-ray diffraction observation of smectite hydration under

Optical/electron-optical microscopy and tracer experiments were performed in the study. A further study [Citation 3] demonstrated that the bentonite reaches an equilibrium state, …

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Heterogeneous Swelling of an Isotropically Compacted Bentonite …

The same observation was made by Denis on Redhill smectite and by Gatabin et al. on a mixture of bentonite and sand. The swelling anisotropy has been attributed to the uniaxial …

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Heterogeneous Swelling of an Isotropically Compacted …

tion of isotropically compacted bentonite was isotropic, while uniaxially compacted bentonite displayed anisotropic swelling. In that case, the axial strain was signicantly higher than the …

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Detailed characterisation of fouling deposition and …

Direct observation (DO) technique allowed the visualisation of fouling deposition and removal in real time and in a non-invasive manner. The DO setup was relatively simple and featured a …

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Predicting Swelling Characteristics of Bentonites

However, it is necessary to choose the appropriate bentonite from among many kinds of bentonite in the design of buffer and backfill materials. To do this, the writers have …

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