Field performance of a geosynthetic clay liner landfill capping system under simulated waste subsidence
- Hochschule fur Architektur und Bauwesen (Germany)
- Materialforschungs - und, Prufanstalt (Germany)
A flexible landfill capping system consisting of a 3-D-geocore composite for gas vent, a Geosynthetic Clay Liner (GCL) for sealing and a 3-D-geocore composite for drainage of the vegetation soil was built on a test field at Michelshoehe landfill near Weimar, Germany. At four locations airbags were installed underneath the thin capping system to simulate subsidences. On top of three of these airbags overlaps of the GCL were positioned, for comparison there was no overlap at the fourth location. After hydratation of the GCL the airbags were de-aerated and subsidences occurred with app. 5 % tensile strain in the GCL. For three weeks the test field was intensively sprinkled in intervals. Then horizontal and vertical deformations were measured, but not displacements were registered in the overlaps. The evaluation of the GCL`s permeability showed no significant difference between the locations with and without overlaps.
- OSTI ID:
- 110944
- Report Number(s):
- CONF-950270-; TRN: 95:005288-0004
- Resource Relation:
- Conference: Geosynthetics `95, Nashville, TN (United States), 21-23 Feb 1995; Other Information: PBD: 1995; Related Information: Is Part Of Geosynthetics `95: Conference proceedings. Volume 1-3; PB: 1253 p.
- Country of Publication:
- United States
- Language:
- English
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