Abstract
Various stabilization techniques have been in practice to counteract the swell-shrink problems posed by expansive soils. Apart from the techniques such as belled piers and under-reamed piles, chemical stabilization of expansive soils has met with considerable success. Various additives used in chemical stabilization. This experimental investigation presents the efficacy of an innovative and comparative study of stabilization technique in the form of columns Fly Ash, lime and GGBS embedded in expansive clay beds. In order to assess the intensity of expansion, swell pressure test is performed on expansive clay beds into which additives are injected which serve as compacted columns. It is observed that swelling decreased significantly in expansive soil used with grouted columns.
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