Abstract: The sample preparation is one of the most important procedures in the centrifuge tests. The key issue is to prepare various samples with designated densities. This paper presents a new sample preparation method that can prepare sand samples with various densities by using the traveling pluviation apparatus (TPA) for the centrifuge tests. Throughout the calibration tests, the target density relationships among the dropping height of sand, diameter of the pipe are obtained. The calibration tests also indicate that this apparatus can provide various densities of the sand samples by adjusting the sand dropping height, and the diameter of sand pipe.

Key words: Traveling Pluviation, Sand Samples, Density, Model Tests