A novel laboratory apparatus has been developed in order to probe into the lateral cyclic loading response of Geosynthetic Encased Stone Columns (GECs) under the action of lateral repeated loading. The testing apparatus is capable of shearing a rather large scale unit cell that contains soil and a column in the center. The displacements and the forces required to attain the predetermined displacements are measured at a sampling rate of 50 Hz. The hysteretic response of the model unit cells to dynamic sinusoidal displacements are quantified. The GEC installed specimen has exhibited a markedly superior dynamic shear behavior under the studied test conditions.
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