Permeability reduction of soil filters due to physical clogging

Lakshmi N. Reddi, Xiao Ming, Malay G. Hajra, In Mo Lee

Research output: Contribution to journalArticle

84 Citations (Scopus)

Abstract

Soil filters, which are commonly used to provide stability to the base soils in subsurface infrastructure, are prone to long-term accumulation of fine micron-sized particles. This causes reduction in the permeability, which in turn may lead to intolerable decreases in their drainage capacity. In this paper, the extent of this reduction is addressed using results from both experimental and theoretical investigations. In the experimental phase, a sandy soil commonly used as a filter or drainage layer was subjected to pore fluids containing polystyrene or kaolinite particles, and their permeability reductions were determined in terms of the pore fluid suspension parameters. In the theoretical phase of the investigation, a representative elemental volume of the soil filter was modeled as an ensemble of capillary tubes and the permeability reduction due to physical clogging was simulated using basic principles of flow in cylindrical tubes. The results from the experimental and theoretical investigations were in good agreement. In general, the permeability reduced by more than one order of magnitude, even when the migrating particles were smaller than the majority of the soil filter pores. The concentration of particles in the pore stream affected the rate at which the permeability reduced. Self-filtration of particles, which is prominent at higher flow rates, may itself lead to a 20% reduction in the permeability for these sands.

Original languageEnglish
Pages (from-to)236-246
Number of pages11
JournalJournal of Geotechnical and Geoenvironmental Engineering
Volume126
Issue number3
DOIs
Publication statusPublished - 2000 Mar 1

Fingerprint

permeability
filter
Soils
soil
Drainage
Capillary tubes
Fluids
drainage
Kaolinite
fluid
Polystyrenes
Sand
sandy soil
kaolinite
Flow rate
infrastructure
particle
sand
rate

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology
  • Environmental Science(all)

Cite this

Permeability reduction of soil filters due to physical clogging. / Reddi, Lakshmi N.; Ming, Xiao; Hajra, Malay G.; Lee, In Mo.

In: Journal of Geotechnical and Geoenvironmental Engineering, Vol. 126, No. 3, 01.03.2000, p. 236-246.

Research output: Contribution to journalArticle

Reddi, Lakshmi N. ; Ming, Xiao ; Hajra, Malay G. ; Lee, In Mo. / Permeability reduction of soil filters due to physical clogging. In: Journal of Geotechnical and Geoenvironmental Engineering. 2000 ; Vol. 126, No. 3. pp. 236-246.
@article{7efe6d28ced6458eb54015e30649a8ee,
title = "Permeability reduction of soil filters due to physical clogging",
abstract = "Soil filters, which are commonly used to provide stability to the base soils in subsurface infrastructure, are prone to long-term accumulation of fine micron-sized particles. This causes reduction in the permeability, which in turn may lead to intolerable decreases in their drainage capacity. In this paper, the extent of this reduction is addressed using results from both experimental and theoretical investigations. In the experimental phase, a sandy soil commonly used as a filter or drainage layer was subjected to pore fluids containing polystyrene or kaolinite particles, and their permeability reductions were determined in terms of the pore fluid suspension parameters. In the theoretical phase of the investigation, a representative elemental volume of the soil filter was modeled as an ensemble of capillary tubes and the permeability reduction due to physical clogging was simulated using basic principles of flow in cylindrical tubes. The results from the experimental and theoretical investigations were in good agreement. In general, the permeability reduced by more than one order of magnitude, even when the migrating particles were smaller than the majority of the soil filter pores. The concentration of particles in the pore stream affected the rate at which the permeability reduced. Self-filtration of particles, which is prominent at higher flow rates, may itself lead to a 20{\%} reduction in the permeability for these sands.",
author = "Reddi, {Lakshmi N.} and Xiao Ming and Hajra, {Malay G.} and Lee, {In Mo}",
year = "2000",
month = "3",
day = "1",
doi = "10.1061/(ASCE)1090-0241(2000)126:3(236)",
language = "English",
volume = "126",
pages = "236--246",
journal = "Journal of Geotechnical and Geoenvironmental Engineering - ASCE",
issn = "1090-0241",
publisher = "American Society of Civil Engineers (ASCE)",
number = "3",

}

TY - JOUR

T1 - Permeability reduction of soil filters due to physical clogging

AU - Reddi, Lakshmi N.

AU - Ming, Xiao

AU - Hajra, Malay G.

AU - Lee, In Mo

PY - 2000/3/1

Y1 - 2000/3/1

N2 - Soil filters, which are commonly used to provide stability to the base soils in subsurface infrastructure, are prone to long-term accumulation of fine micron-sized particles. This causes reduction in the permeability, which in turn may lead to intolerable decreases in their drainage capacity. In this paper, the extent of this reduction is addressed using results from both experimental and theoretical investigations. In the experimental phase, a sandy soil commonly used as a filter or drainage layer was subjected to pore fluids containing polystyrene or kaolinite particles, and their permeability reductions were determined in terms of the pore fluid suspension parameters. In the theoretical phase of the investigation, a representative elemental volume of the soil filter was modeled as an ensemble of capillary tubes and the permeability reduction due to physical clogging was simulated using basic principles of flow in cylindrical tubes. The results from the experimental and theoretical investigations were in good agreement. In general, the permeability reduced by more than one order of magnitude, even when the migrating particles were smaller than the majority of the soil filter pores. The concentration of particles in the pore stream affected the rate at which the permeability reduced. Self-filtration of particles, which is prominent at higher flow rates, may itself lead to a 20% reduction in the permeability for these sands.

AB - Soil filters, which are commonly used to provide stability to the base soils in subsurface infrastructure, are prone to long-term accumulation of fine micron-sized particles. This causes reduction in the permeability, which in turn may lead to intolerable decreases in their drainage capacity. In this paper, the extent of this reduction is addressed using results from both experimental and theoretical investigations. In the experimental phase, a sandy soil commonly used as a filter or drainage layer was subjected to pore fluids containing polystyrene or kaolinite particles, and their permeability reductions were determined in terms of the pore fluid suspension parameters. In the theoretical phase of the investigation, a representative elemental volume of the soil filter was modeled as an ensemble of capillary tubes and the permeability reduction due to physical clogging was simulated using basic principles of flow in cylindrical tubes. The results from the experimental and theoretical investigations were in good agreement. In general, the permeability reduced by more than one order of magnitude, even when the migrating particles were smaller than the majority of the soil filter pores. The concentration of particles in the pore stream affected the rate at which the permeability reduced. Self-filtration of particles, which is prominent at higher flow rates, may itself lead to a 20% reduction in the permeability for these sands.

UR - http://www.scopus.com/inward/record.url?scp=0034161850&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0034161850&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)1090-0241(2000)126:3(236)

DO - 10.1061/(ASCE)1090-0241(2000)126:3(236)

M3 - Article

VL - 126

SP - 236

EP - 246

JO - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

JF - Journal of Geotechnical and Geoenvironmental Engineering - ASCE

SN - 1090-0241

IS - 3

ER -