Abstract
In this study, the method of measuring the density of soil in situ with a split spoon sampler with built-in tubes was applied to a double-layer ground consisting of a sand layer and a cohesive-soil layer and its measuring accuracy was evaluated. The evaluation was made by comparing the wet densities, water contents, etc. measured with a radioisotope-cone penetration tester and those measured with the split spoon sampler. As to the cohesive soil, the wet densities, water contents, etc. measured with a thin-wall sampler were compared with those measured with the split spoon sampler and the radioisotope-cone penetration tester. As the result, the method of measuring the density of soil in situ with a split spoon sampler proved to be practical enough.
