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Le résumé fourni par la source

Sand in geotechnical practice is often regarded as a medium consisting of individual grains. The properties of this medium depends on the friction between grains. In the literature, and even regulatory documents, mechanical properties of Sands on large lot above than silty Sands. Field tests of Sands often give inappropriate practice the above results. In fact the sand as any environment has its geological history. The entrance is formed by geological processes gra-nanomatrices composition, impurities and density of Sands. During geological processes formed the connection between the grains. All this together forms the bearing capacity of the Sands and their deformability. In this paper, the data on field tests of Sands of different Genesis that show that the geological history affects the formation of the bearing capacity of Sands. Greatly influences the behavior of admixtures of sand, natural organic substance. Strongly affects the behavior of sand contaminated with oil products, organic chemicals and especially strongly influenced by bacterial contamination. In the work the dependences between the threshold and limit polzuemoy condition and it is demonstrated that these quantities have a constant ratio, respectively, constant and permanent factor.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.