Abstract: Reinforced Soil Slope (RSS) is a widely used slope stability mitigation projects. The coarse aggregates are widely used as the backfill material due to their low cost, high compressive strength and high frictional resistance. The interactions between the geogrid and the coarse aggregates are not fully understood. This paper present a case history of the coarse aggregate filled RSS. The interface properties, the tensile strength of the geogrid in the RSS and the RSS failure modes are discussed. The factor of safety is obtained by using limit equilibrium method. The strain in the geogrid at different locations are monitored during the construction.

Key words: Coarse-Aggregates, Reinforced Soil Slopes, Strength Reduction Factors, Strain in the Geogrid, Limit Equilibrium Method