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Stone or sand columns are most widely used to improve the engineering properties of soft saturated soils. In principles, sand columns technique is very close to the well-known stone columns technique and the only difference is the backfill materials. The present work focuses on implementing sand columns in soft soil of different diameters, different relative densities considering both floating and end bearing types. The model tests were performed inside a steel container (600mm x 600mm andfatcat:yipbh4ioafgjfh3pl2gujqjyni