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