The plastic concrete slurry wall is a variation of both the soil-bentonite and cement-bentonite slurry walls. It is composed of a mixture of water, bentonite, cement, and aggregate that hardens to form a wall with significantly greater sheer strength, yet remains flexible. The plastic concrete slurry wall is constructed in paneled sections that are individually excavated under a bentonite slurry. Once a panel is excavated, the plastic concrete is poured with a tremie pipe into the panel to replace the bentonite slurry and is left to harden. The plastic concrete slurry wall is used in applications where strength and deformability are desired. It has a relatively low permeability and, based on limited data, may be more resistant to permeation by contaminants.