DIELECTRIC METHOD FOR MEASURING THE CONTENT OF UNFROZEN WATER IN MINERAL SOIL
A.Yu. Karavayskiy1, Yu.I. Lukin1, E.I. Pogoreltsev1,2
1Kirensky Institute of Physics, SB RAS, Academgorodok 50/38, Krasnoyarsk, 660036, Russia
2Institute of Engineering Physics and Radioelectronics, Kirenskogo str. 28, kor. 12B, Krasnoyarsk, 660074, Russia
Keywords: mineral soils, calorimetric method, permittivity, unfrozen water, bound water
Abstract
The possibility of using the dielectric method to determine the unfrozen water content in the frozen natural mineral soil was proved by establishing the relationship between the contents of soil water forms measured by the dielectric, calorimetric, and contact methods. The unfrozen water content in the sample was measured by the calorimetric and contact methods. In the dielectric method, it was estimated by measuring the maximum content of bound water. The unfrozen water content measured by the calorimetric method in the soil samples with different initial water contents varied within 17 %. The unfrozen water content measured by the contact method and the bound water content determined by the dielectric method were within the ranges of values determined by the calorimetric method. The values of the bound water content obtained by the dielectric method and the unfrozen water content obtained by the contact method differed by no more than 17 %.
|
