SYMPOSIA PAPER Published: 01 January 1990

Long-Term Clogging Behavior of Non-Woven Geotextiles with Silty and Gap-Graded Sands


Non-woven geotextiles are generally used for the protection of synthetic liners in sanitary landfills. In this application the geotextiles perform as a filter and drain for the leachate collection system. Since geotextiles play a major role in landfill design, they should be properly selected to obviate any clogging problems. Filtration criterion for the non-woven geotextiles are still evolving. The existing filter criteria are not applicable for silty and gap-graded soils. In this paper, the results are presented for six different nonwoven geotextiles which are tested with eighteen different gap-graded soils to evaluate long-term filtration behaviors. Microstructure analysis results are provided for a better understanding of the clogging mechanism of non-woven geotextiles.

Author Information

Bhatia, SK
Qureshi, S
Kogler, RM
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Developed by Committee: D35
Pages: 285–298
DOI: 10.1520/STP19039S
ISBN-EB: 978-0-8031-5139-0
ISBN-13: 978-0-8031-1456-2