Use of soil from which e.g. minerals have been extracted for infill

摘要

The grinding, sifting and mixing of the soil, for e.g. mineral extraction, is carried out in such a way that the grain of the soil is not completely reduced to sand consistency. A certain percentage of coarse-grain soil is retained even though the percentage of fine grain is increased. The coarse grains form a support structure, the spaces in between which are filled with the fine grain material so that the coarse grain is embedded in the fine grain without the coarse grains touching.