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The paper presents the preliminary results of experimental research into the stabilisation with cement and/or lime of clayey sediments dredged from the Port of Taranto (Italy). First, the physical properties of the natural sediments are briefly described and compared with those of the same sediments when treated with different additives and cured up to four years. In particular, the effect of the treatment on the soil plasticity properties is originally analysed in terms of plasticity paths.Then, the influence of the different stabilising agents on the compression behaviour of the dredged soil is analysed and methods for quickly predicting the admixed-soil behaviour are presented.

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