A finite element parametric study was conducted in this paper to explore the increase in the rutting and fatigue resistance brought about to a conventional pavement system due to the insertion of geosynthetic membrane under different foundation types and geosynthetic locations. The study concluded that regardless of the foundation quality the longest life against fatigue distress was achieved when the geosynthtic was placed at the bottom of the asphalt concert layer; whereas, the optimum location for prolonging the rutting life was found at the 1/3 of the base thickness from the bottom. However, the life extension against rutting in this case was dependent on the foundation quality. Further investigations are required to validate the conclusions obtained for pavements with different foundation and geosynthetic parameters as well as loading features.
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