A new sand preparation method is developed for physical model testing. This method is especially suitable to create fully saturated samples, since the construction of the sample and densification afterwards is performed under saturated conditions. In this way the tedious saturation of a sample made from dry sand (for example when using the dry raining method) and the drying of the sand after the test are avoided. The new method is based on the low velocity of free falling sand grains in water to create a loose sample that can be compacted homogeneously afterwards to the desired density by means of small impacts. The paper presents the practical information, possibilities and limitations of the procedure. that in large sand models the bulk density is the same as the local measured densities taken in 50 positions of the sand body. This paper will describe the further developed method for sample preparation in more detail. THE DRIZZLE METHODThe method described in this paper is based on the low velocity of free falling sand grains in water. Section 2.1 describes the method in detail. Section 2.2 shows the calculation of the dry weight of the model and 2.3 has a detailed description on the compaction procedures. Section 2.4 gives a short insight on how this method works with viscous fluids and Section 2.5 gives some remarks on the procedure. The drizzle method for sand sample preparationA cylindrical container, the storage cell, was used to store the sand-water mixture. The sand-water mixture was obtained by using de-aired water and pouring the desired sand carefully into the water to avoid air-inclusions. The sand model cell is the container used for preparing the sand model. After weighing the empty sample cell, it is filled with de-aired water. Now there are two cells: the storage cell with the mixture and the sand model cell. It is important that the water contains no air because this will influence the permeability of the sand model and the compressibility of the water. A submersible pump is placed in the storage cell containing the prepared sand-water mixture. The mixture is pumped into the prepared sand modelcell using synthetic pipes filled with de-aired water,
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