Full displacement piles (FDP) are classified as driven cast in-situ concrete piles. These piles generate minimal spoil, as soil is not removed but rather displaced and compacted around the pile. This displacement process significantly densifies the soil at both the skin and the base of the pile, leading to a significant increase in bearing capacity.
The concrete replacement technique in FDPs is similar to that of CFA piles. Once the displacement tool reaches the desired depth, grout or concrete is placed while the tool is being extracted. Following the removal of displacement tool, a reinforcement cage is inserted into the fluid grout/concrete pile.
