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An investigation of moisture dependences of refractive index and spectral width of the nuclear magnetic resonance (NMR) is performed for bentonitic clay specimens at different temperatures. These moisture dependences allowed identifying two types of moisture: bound and free water. The maximum content of water in the bentonitic clay is measured.
The maximum bound water content (MBWC) in moist bentonite clay was detected with the use of two dielectric models, that is, the Generalized Refractive Mixing Dielectric Model and Schmugge dielectric model. These values have appeared to be different. To determine which of these values corresponds to the true MBWC value, there was developed an independent nuclear magnetic resonance (NMR) technique for...
In this paper, the results of measurements in the frequency range from 10 MHz to 1.0 GHz of the complex dielectric permittivity for some moist artificial soil, that is, mixtures consisting of quartz sand and bentonite clay components, with varying particle-size distributions, are discussed. The measurements were conducted with the use of coaxial line and capacitor probes in conjunction with a vector...
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