Measurement of hydraulic properties of bentonite cake formation deposited on base soil medium

Lee, Dongseop; Kim, Kiseok; Lee, Hyobum; Lim, Jeehee; Lee, In Mo; Choi, Hangseok

doi:10.1016/j.clay.2016.01.037

Cited by 17 publications

(6 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When JKR energy reaches 0.05 J/m 2 , the slurry particles nearly cover the entire sand column surface, indicating that they can almost form an external slurry cake. Compared to laboratory tests that use slurries with different concentrations or contents, 6,7,48 high-viscosity slurries tend to form effective clogging in the surface or shallow layers of the sand column, whereas low viscosity ones are unable to do so.…”

Section: Effect Of Jkr Surface Energymentioning

confidence: 97%

“…(6) The simulation proceeds to the next stage of fluid calculation. (7) The exchange of flow field information and particle data continues across multiple cycles until the termination condition is met, ultimately yielding a solution.…”

Section: Cfd-dem Coupling Mechanismmentioning

confidence: 99%

“…Therefore, laboratory-scale experiments based on simulated infiltration devices are often used to analyze slurry infiltration process. 7,8 Talmon et al 9 analyzed the viscous invasion process and has a conclusion that filter cake formation can only commence when the invasion velocity falls below the Peclet criterion for undrained behavior of the suspension. As an extension of Krause's experiments, 10 Xu and Bezuijen 6 modified their laboratory test equipment to reduce the hydraulic gradient in the model tests and find that high-density slurries with sand content have difficulty forming external filter cakes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Cheng,

Wang,

Wang

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

The tunnel face stability is closely related to the migration behavior and clogging mechanism of the slurry particles in granular soils, which is not yet fully understood. In this study, the coupled computational fluid dynamics–discrete element method (CFD–DEM) is adopted to investigate the infiltration behavior of slurry at the particle scale. The full Johnson–Kendall–Roberts (JKR) contact model describing interparticle behavior that accounts for cohesion present even when particles are microseparated after collisions is adopted for clay‐clay or clay‐sand particles and the Hertz–Mindlin model is used for sand‐sand particles. Through simulations, the mechanism of the slurry particle's blockage is identified as physical, frictional and cohesive modes, and slurry particle migration usually undergoes the process of aggregation‐destruction‐migration‐reassembly. Meanwhile, the influences of pressure, cohesive force, and particle shape on infiltration are also analyzed. The results indicate that high pressure lengthens the infiltration path and increases the infiltration rate. The increase in cohesion enhances the effective clogging of the sand column by the slurry, and particles with smaller sphericity are more likely to clog in the sand column. These findings may enhance our understanding of the slurry infiltration mechanism and its practical application in TBM tunneling.

show abstract

Section: Effect Of Jkr Surface Energymentioning

confidence: 97%

Section: Cfd-dem Coupling Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Cheng,

Wang,

Wang

et al. 2024

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

show abstract

“…Due to the pressure difference, when the solid-liquid suspension moves toward the filtration medium, the solid particles in the slurry are retained on the filtration medium during the filtration stage, forming a solid particle matrix with void space, namely, filter cake (Huttunen et al , 2019; Lee et al , 2016; Chen and Hsiau, 2009). There are many reasons controlling the formation of filter cakes, for example, soil permeability, clay content, slurry pressure and slurry properties (viscosity, particle size distribution, density, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…There are many reasons controlling the formation of filter cakes, for example, soil permeability, clay content, slurry pressure and slurry properties (viscosity, particle size distribution, density, etc.) (Lee et al , 2016; Cui et al , 2019; Oseh et al , 2019). At present, there are many studies on slurry filter cake formation and penetration problems.…”

Section: Introductionmentioning

confidence: 99%

Factors affecting the compactness of filter cake for diaphragm wall slurry

Zhang

Kong

Chen

2020

PRT

View full text Add to dashboard Cite

Purpose The purpose of this paper is to explore the factors that affect the compactness of the mud filter cake, so as to prepare diaphragm wall slurry with good uniformity, small filtration loss and excellent recycling performance. Design/methodology/approach In this paper, the thickness, filtration loss and slurry viscosity of the filter cake are used as the characterization methods. The effects of pore depth, slurry specific gravity, intercalated metal ions, bridging polymer and water-soluble polymer on the compactness of the filter cake were studied. Findings The experimental results showed that the slurry's own pressure (pore depth) and specific gravity have little influence on the compactness of the filter cake and K+ can be considered as an auxiliary filtration loss reduction factor. Both the sulfonate copolymer and the potassium polyacrylate particle can significantly reduce the filtration loss of the slurry, which can effectively improve the filter cake compactness. Moreover, the composite application of potassium polyacrylate particles in the sizes of 80–100 and 150–200 meshes can exhibit a better filter cake compaction effect. Originality/value It solves the problems of high pulping cost, serious pollution of the environment, poor quality of filter cake formation and large filtration loss during the construction of the diaphragm wall, which improved the construction quality of the diaphragm wall.

show abstract

Preparation of a novel bentonite intercalation composite by changing the chemical state of aluminum

Peng

Kong

Shi

et al. 2020

J Chinese Chemical Soc

View full text Add to dashboard Cite

A new environment‐friendly bentonite intercalation composite was successfully obtained from alumina sol intercalation. This process used industrial grade pseudo boehmite as the aluminum source and provided with the advantage of zero emission of acidic wastewater. The bentonite intercalation composite was investigated by XRF, ICP, XRD, FT‐IR, BET, and pyridine‐FTIR. Results indicated that the basal spacing was enlarged from 14.72 to 15.60 Å; the specific surface area increased by 128%; and the total acid content increased from 65.32 to 245.76 μmol/g. The catalytic activity of this composite was tested by alkylation of aromatics with olefins. The results show that the weak Lewis acid generated by extra‐framework aluminum and specific surface area play a decisive role, while weak Brønsted acid site is not the active site for this alkylation reaction.

show abstract

Measurement of hydraulic properties of bentonite cake formation deposited on base soil medium

Cited by 17 publications

References 26 publications

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Hydromechanical analysis of slurry infiltration with coupled CFD–DEM method

Factors affecting the compactness of filter cake for diaphragm wall slurry

Preparation of a novel bentonite intercalation composite by changing the chemical state of aluminum

Contact Info

Product

Resources

About