Currently the primary method of final disposal for most waste is in a landfill. Landfills are being designed to have larger capacities, which results in large vertical stresses that can effect the bottom liner system. The scope of this paper is to take a preliminary look at the effect of high vertical stresses on geosynthetic liner systems.
The primary goal of this investigation was to determine the reduction in transmissivity of the leachate collection system and the effect of high normal stresses on the strength of the geosynthetics.
A compression loading frame capable of maintaining a constant high normal stress was developed for the long-term tests. The samples were tested for 1000 hours, removed, visually inspected, and tensile tested to determine the strength of the materials. Results showed little effect on the strength of the geosynthetics, but a significant reduction in the drainage systems transmissivity.
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