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Sand – gravel (SG) soil stabilized by cement kiln dust (CKD) in mixture reinforced by GlassFiber (GF) as new piles body properties are tried to present the needed parameters for simulatingpile reinforced sand slope on Plaxis 2D program. A numerical investigation by the Finite ElementMethod (FEM) was simulated on Plaxis 2D by modelling sand slope supported by mentionedpiles under strip footing loads. The Piles material was simulated as SG – 30% CKD - 1% GFmixture parameters. On the other hand, numerical investigation was analyzed to adopt thesettlement (S) improvement limits, and to obtain the needed force which safes sand slope stabilityby decreasing of lateral displacement (δ) and (S) to a desired value. It is clear that simulatingsand slope with angle (40 o) under pressure (q = 280 kN/m2) is more critical. Piles withmentioned conditions found a solution for slope with the critical angle (40o) stability by savingthe value of safety factor (F.S > 1.5). General indexes refer to the importance of increasing pilesembedded length in stable layers according to the mentioned pile dimentions ratio.

NUMERICAL STUDY ON PILES PERFORMANCE IN SAND SLOPE STABILITY UNDER VARIABLE CONDITIONS