Permeability characteristics of lime treated marine clay

An attempt has been made to investigate the lime induced permeability chang es in the permeability and engineering behavior of different lime column tr eated soil systems. Lime columns treated marine clay shows an increase in p ermeability up to a maximum value of 15-18 times that of untreated soil wit h time. The shear strength of the treated soil systems show an increment up to 8-10 that of untreated soil within a period of 30-45 days curing. In th e case of lime injection systems, the permeability has been increased up to 10-15 times that of untreated soil, whereas the strength of the soil has b een higher by 8-10 times that of untreated soil. Further, consolidation tes ts show a reduction in the compressibility up to 1/2-1/3 of original values . The test results revealed that both lime column and injection techniques could be used to improve the behaviour of underwater marine clay deposits. (C) 2001 Published by Elsevier Science Ltd.