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Approaches to investigate the crack formation of mineral landfill liner systems

Beck-Broichsitter, Steffen and Fleige, Heiner and Horn, Rainer (2017) Approaches to investigate the crack formation of mineral landfill liner systems. In: Jahrestagung der DBG 2017, 02.-07.09.2017, Göttingen.

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Abstract

The municipal landfill in Rastorf (Schleswig-Holstein) is covered with a temporary till based capping system. Investigations of structural changes (water conductivity, pore function, shrinkage behaviour) were carried out with undisturbed soil cores and two- and three-dimensional measurement techniques. The usage of different techniques to evaluate the soil volume changes resulted in variations of the available water capacity (ver>ver+hor>3D) and the unsaturated hydraulic conductivity. In summary, a critical matric potential between -500 and -1000 hPa in conjunction with a low shrinkage tendency (Vs < 5 %) could be seen as main argument for the utilization of till as sealing substrate.

Item Type: Conference or Workshop Item (Contribution to "Reports of the DBG")
Uncontrolled Keywords: landfill capping system, shrinkage behaviour, critical matric potential
Divisions: Kommissionen > Kommission VI: Bodenschutz und Bodentechnologie
Depositing User: Steffen Beck-Broichsitter
Date Deposited: 20 Oct 2017 12:24
Last Modified: 20 Oct 2017 12:24
URI: http://eprints.dbges.de/id/eprint/1220

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