Book chapter
Durability and lifetime of polymer fibers with respect to reinforced geosynthetic clay barriers; i.e., reinforced GCLs
Clay Geosynthetic Barriers, pp 73-86
2002
Abstract
This paper presents an evaluation of Geosynthetic Clay Liners (GCLs) to minimize geomem-brane puncture, and the resulting leakage, due to protrusions in subgrades and compacted clay liners. Quasi-performance puncture tests were conducted on an HDPE geomembrane alone, with a 540 g/m2 nonwoven needlepunchedgeotextile andwith three typesofGCLs. The GCLs were foundtoprovide protectionperformance equivalent to or better than that of the geotextile. Leakage rate through an artificial puncture in the geomembrane was calculated both with and without a GCL under-layer using an equation published in the literature. As a result of better intimate contact and lower permeability, GCLs were found to significantly inhibit leakage through the geomembrane. The protection performance data and leakage rate calculations indicate that GCLs can be used to protect geomembranes from damage caused by protrusions in subgrades and compacted clay liners. Compacted clays or insitu low permeability soils with coarse particles can be used as mineral layers in composite barrier systems provided the geomembrane is protected by a GCL.
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Details
- Title
- Durability and lifetime of polymer fibers with respect to reinforced geosynthetic clay barriers; i.e., reinforced GCLs
- Creators
- Y. G. Hsuan - Drexel UniversityR. M. Koerner - Drexel University
- Publication Details
- Clay Geosynthetic Barriers, pp 73-86
- Publisher
- CRC Press
- Resource Type
- Book chapter
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Scopus ID
- 2-s2.0-85127655273
- Other Identifier
- 991022237370004721