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      • Consolidation and Permeability Properties of Pusan Clay at the Pusan New Port

        K.Ganapathi Rao,Chung, S.G.,M. Suneel 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

        Large reclamation projects have been carried out in the western marginal area of the Nakdong River Estuary where are located at Busan city and its vicinity, South Korea, since late 1990s. In the area studied clay deposits are unusually thick, varying from 20m to 70m in thickness. The consolidation and permeability characteristics of these clays were investigated by laboratory tests. The coefficients of consolidation and permeability of the clays in the vertical and horizontal directions were investigated by oedometer, constant rate of strain (CRS) and CRS tests with outward radial drainage. It is found from the test results that theseclays have a specific stress-strain relationship depending on the strain rate history and depositional environment, as well as a variation of permeability anisotropy during consolidation.

      • Geological and Geotechnical Characteristics of Marine Clay in Busan New Port

        Chung, S.G,E. Ninjgarav,M. Suneel,K.Ganapathi Rao,Kim, G.J. 東亞大學校 建設技術硏究所 2005 硏究論文集 Vol.28 No.2

        Since early 1990s reclamation projects for Busan and its vicinity in Nakdong River plain have been performed for industrial and residential complexes. As well it has started to build a new port (Busan Newport) with increase in overloads of Busan port since late 1990s. In the area the sedimentary deposit is composed of soft clay of about 30m thick, thin sand layer of 3-4m thick, hard clayey soil, and then basal conglomerates and sandy sediments, total thickness of which is about 70m at maximum under seawater. For the huge project many contract companies have simultaneously performed geotechnical investigations to get design parameters. Based on the harmful experiences gained by the previous projects, it was also required to pay careful attention to sampling and laboratory and field tests for theproject. Nevertheless the results of laboratory tests were so scattered and then resulted in difficulty to evaluate the design parameters. Existing data has been reviewed to evaluate the validity or cause of their variation. In addition geological study, sampling and soil tests have been carefully carried out at a few locations. Using the results the clay would be effectively characterized for depositional environment and its relation to soil properties.

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