Shein E.V., Pochatkova T.N., Holodkov A.I.
THE RHEOLOGICAL PROPERTIES OF SOD-PODZOLIC SOIL ^{[№ 6 ' 2016]}
Formation, stability and, on the other hand, the degradation of soil aggregate structure are the processes related to fundamental physical and chemical properties of the solid phase soil surface and are their functional manifestations. Rheological investigations allow to reveal the inner nature of the strength properties and provide an integrated assessment of the strength of the bonds involved in the formation of soil structure. In modern conditions of intensive anthropogenic load all the soil are exposed to a greater or lesser susceptible physical and technological degradation, which is manifested at different levels of structural organization. The purpose of the study — by modern methods of soil rheology set especially rheological behavior of genetic horizons of cultivated sod-podzolic soil under shear loads. The physical and chemical properties of the genetic horizons of cultivated sod-podzolic soils significantly affect the rheological behavior of the soil. Rheological properties were determined using a rotary viscometer "Reotest 2" with a cylindrical measuring device. The strength of the soil structure parameters, such as the commencement of the pressure of the soil suspension and the beginning of the destruction of the structure in the cultivated horizon is 20–40 kPa, then reduced in eluvial and increases in the illuvial horizon of up to 70 kPa. The viscosity of the start and end of movement in arable soil suspension horizons vary in the range of 110–120 Pa*s, and in horizons samples A-ELB-B and A-EL — in the range of 140–170 and 6–80 Pa*s, respectively. When shear deformations of soil horizons of sod-podzolic soil is predominant phenomenon rheopexy, with different participation tiхotrophic processes.

Kharitonov G.V., Manucharov A.S., Pochatkova T.N., Tyugay Z.
EFFECT OF SOLUBLE SALTS ON THE SURFACE PROPERTIES OF CLAY MINERALS ^{[№ 4 ' 2011]}
Shown that the effect of soluble salts on the surface properties of clay minerals depends on the nature of the mineral properties of salt used and its state (in solution or adsorbed). Processing of clay minerals with solutions NaCl, MgCl₂, Ca(CH₃COO) ₂ and ZnCl₂ leads to an increase in their water-holding capacity according to the following series: NaCl > MgCl₂ > Ca(CH₃COO) ₂ ≈ ZnCl₂.

Nikolaeva I.V., Pochatkova T.N., Manucharov A.S.
INFLUENCE OF LONG TIME USAGE OF FERTILIZERS ON RHEOLOGICAL PROPERTIES OF TYPICAL CHERNOZEM ^{[№ 12 ' 2007]}
The analysis of rheological curves of typical chernozem at humidity of maximal swelling allowed revealing that manure application caused dilatant properties at the expense of soil aggregates water-stability increase. Specific capacity increase of maximum destruction of structure in variant with manure improves technological properties of soil at the expense of viscosity decrease and durability limits increase. Under influence of mineral fertilizers sharp decrease of specific capacity of maximum destruction of structure in comparison with control is happened which causes unfavorable structural-mechanical properties.