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The nuclear density cone penetration test (ND-CPT) is used to investigate the wet density (ρ) of soft soil deposits under the sea. In the ND-CPT, the density is determined by the count rate ratio (R ρ ) of the gamma rays detected by the detector to the gamma rays from the source. Thus, the ND-CPT measures the average wet density of the material within a spheroid volume around the central point...
The density and the undrained shear strength (su) of bed sediments at either side of the Isahaya Bay dike in the Ariake Sea, Japan, were investigated using nuclear density cone penetration tests (ND-CPTs). The nuclear density cone penetrometer (ND-CP) was operated from a boat, conducting 71 ND-CPTs. Furthermore, 26 undisturbed samples were obtained for soil density and su measurements to calibrate...
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