Performance of Granular vs. Geotextilc filters in protecting cohesionless soils

Shobha K Bhatia, J. Moraille, J. L. Smith

Research output: Chapter in Book/Report/Conference proceedingChapter

9 Citations (Scopus)

Abstract

Several researchers have drawn analogies between granular filters and geotextile filters. They have shown that both granular and geotextile filters can be designed using similar principles. However, these comparisons have been made on the basis of theory only. Limited experimental data is available to draw meaningful comparisons between granular and geotextile filters. In this paper, a comparison between granular and geotextile filters has been made on the basis of long-term, steady-state and hydrodynamic filtration tests. Under steady-state conditions, both granular and geotextile filters showed similar retention behavior. This was due to the formation of similar soil bridging zones above the granular and geotextile filters. Both the granular and geotextile filters acted as catalysts in the formation of soil filtration zones above the filters and were not directly involved in the filtering behavior of the system. It is believed that under hydrodynamic conditions with bi-directional flow, the filtration zone is not established behind the filter. Therefore, the retention behavior of the system under hydrodynamic conditions is a direct function of the physical properties of the filter. This finding is significant for the selection of filters under rip-rap, where the flow direction can change bi-directionally over time.

Original languageEnglish (US)
Title of host publicationGeotechnical Special Publication
Pages1-29
Number of pages29
Edition78
StatePublished - 1998

Fingerprint

geotextiles
cohesionless soil
Geotextiles
filter
Soils
geotextile
soil
hydrodynamics
Hydrodynamics
soil formation
Filters (for fluids)
hydraulic structures
catalysts
physical properties
Physical properties
researchers
Catalysts

ASJC Scopus subject areas

  • Soil Science
  • Building and Construction
  • Architecture

Cite this

Bhatia, S. K., Moraille, J., & Smith, J. L. (1998). Performance of Granular vs. Geotextilc filters in protecting cohesionless soils. In Geotechnical Special Publication (78 ed., pp. 1-29)

Performance of Granular vs. Geotextilc filters in protecting cohesionless soils. / Bhatia, Shobha K; Moraille, J.; Smith, J. L.

Geotechnical Special Publication. 78. ed. 1998. p. 1-29.

Research output: Chapter in Book/Report/Conference proceedingChapter

Bhatia, SK, Moraille, J & Smith, JL 1998, Performance of Granular vs. Geotextilc filters in protecting cohesionless soils. in Geotechnical Special Publication. 78 edn, pp. 1-29.
Bhatia SK, Moraille J, Smith JL. Performance of Granular vs. Geotextilc filters in protecting cohesionless soils. In Geotechnical Special Publication. 78 ed. 1998. p. 1-29
Bhatia, Shobha K ; Moraille, J. ; Smith, J. L. / Performance of Granular vs. Geotextilc filters in protecting cohesionless soils. Geotechnical Special Publication. 78. ed. 1998. pp. 1-29
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