Change in paste viscosity depending on water content and initial moisture content of soil samples
- Authors: Fedotov G.N.1, Tarasenko D.A.1, Gorepekin I.V.1,2, Batyrev Y.P.3
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Affiliations:
- M.V. Lomonosov Moscow State University
- Eurasian Center for Food Security of Lomonosov Moscow State University
- BMSTU (Mytishchi Branch)
- Issue: Vol 29, No 4 (2025)
- Pages: 94-103
- Section: Biological and technological aspects of forestry
- Published: 15.08.2025
- URL: https://journals.eco-vector.com/2542-1468/article/view/706312
- DOI: https://doi.org/10.18698/2542-1468-2025-4-94-103
- ID: 706312
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Abstract
The effect of soil drying and the humidity to which soil samples were moistened, as well as the mechanical effect of pastes on their viscosity, was studied. The purpose of the study was to explain the observed phenomena from the standpoint of physical and gel models of soils. The studies were carried out on samples taken from humus-accumulative horizons of chernozem, sod-podzolic and gray forest soils. The viscosity of the soil pastes was determined by using a vibrating viscometer, and a laser diffractometer was used to study the size of the soil particles in the pastes. It has been established that with an increase in the magnitude of mechanical effects on soil pastes, upon reaching its limit for each soil, an increase in the viscosity of soil pastes occurs, called rheopexy in colloidal chemistry. It has been shown that rheopexy is characterized by an increase in the particle size in soil pastes. It was found that the moisture content of the soil sample before the preparation of the paste affects the viscosity of pastes in a complex way: for the studied soil samples, two maximum viscosities of pastes are observed. One of them is close to the soil hydrological moisture constant of capillary rupture, and the second is close to the lowest moisture capacity.
About the authors
Gennadiy N. Fedotov
M.V. Lomonosov Moscow State University
Author for correspondence.
Email: gennadiy.fedotov@gmail.com
Dr. Sci. (Biology), Senior Researcher of the Faculty of Soil Science
Russian Federation, GSP-1, 1, P. 12, Leninskie Gory, 119991, MoscowDarya A. Tarasenko
M.V. Lomonosov Moscow State University
Email: ushkova_dasha@mail.ru
Engineer of the Faculty of Soil Science
Russian Federation, GSP-1, 1, P. 12, Leninskie Gory, 119991, MoscowIvan V. Gorepekin
M.V. Lomonosov Moscow State University; Eurasian Center for Food Security of Lomonosov Moscow State University
Email: decembrist96@yandex.ru
Cand. Sci. (Biology), Researcher of the Faculty of Soil Science; Researcher
Russian Federation, GSP-1, 1, P. 12, Leninskie Gory, 119991, Moscow; GSP-1, 1, P. 12, Leninskie Gory, 119991, MoscowYuriy P. Batyrev
BMSTU (Mytishchi Branch)
Email: batyrev@bmstu.ru
Cand. Sci. (Tech.), Associate Professor
Russian Federation, 1, 1st Institutskaya St., 141005, Mytishchi, Moscow RegionReferences
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