Abstract
The influence of contact with water of soil aggregates of chernozem, sod-podzolic and gray forest soils on their water stability has been studied. It is established that an increase in the contact time of soil aggregates with water leads to a gradual decrease in their water stability. The conducted verification of the effect of salt solutions on the water stability of soil aggregates showed that the loss of water stability of aggregates in contact with water is not directly proportional to the disjoining pressure. It was found that when soil aggregates come into contact with water, fractal clusters of humus particles (F-clusters) are isolated from them. It is suggested that F-clusters, which are the basis of soil gels, determine the physical basis of soil waterproofness.
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