Rheological properties of naturally structured and homogenized sod-podzolic soil and typical chernozem under various land use

Abstract

The rheological parameters of naturally structured and homogenized sod-podzolic soils and typical chernozems under various land use were studied by the amplitude sweep test. The range of elastic behavior at low loads in which the microstructure does not break down (LVE-range) and the strength (stability) of natural structural bonds (storage modulus in this range) in naturally structured samples are greater than in homogenized samples but homogenized soils have a bigger range of plastic behavior (Crossover) at measurement conditions. Differences in rheological behavior between horizons are more pronounced for naturally structured soils. However, further studies and selection of optimal measurement conditions are necessary for better understanding of rheological behavior of naturally structured soils.