Unified model of e-log p relationship of clay and the interpretation of natural water content of marine deposits

Unified model of e-log p relationship of clays was proposed, which consists of ultimate standard compression curve, USC and the standard e-log p curves from the initial void ratio SCE0. Both curves are determined mainly by the liquid limit, the void ratio at the very beginning of consolidation and the sensitivity of clay. The uniqueness of USC was examined by the consolidation data of 18 marine clay including Japan and South East Asia and Europe. Further, the theoretical background of USC was given. Considering the effects of waves and currents, the void ratio of marine clay when the consolidation starts seems to be 1.5-2.0 times of the liquid limit. By using the proposed model and the assumed initial void ratio, the interpretation on the natural void ratio of marine deposit seabed is given.