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[53470] Artykuł: The effect of the soil granulometric composition on the FID (Free Induction Decay) signal intensity in NMR tests(Wpływ składu granulometrycznego gruntów na intensywność sygnału FID (Free Induction Decay) w badaniach NMR)Czasopismo: Structure and Environment Tom: 8, Zeszyt: 2/2016, Strony: 111-116 ISSN: 2081-1500 Opublikowano: 2016 Autorzy / Redaktorzy / Twórcy Grupa MNiSW: Publikacja w recenzowanym czasopiśmie wymienionym w wykazie ministra MNiSzW (część B) Punkty MNiSW: 9 Keywords: non cohesive soil  well and poorly sorted soil  granulometric composition  NMR methods  FID Signal  |
The influence of the soil granulation, grain diameter and the soil type on the FID signal intensity is presented. The FID
signal intensity is used to determine the water content in soil sample by the use of the NMR spectrometry. Eighty five
samples taken from four different soils (3 sand,1 sandy silt) were tested. The samples were characterized by different
masses and water contents. The results of the FID signal intensity were compared to the mass of water in soils calculated
by empirical formula obtained for clay soils and the mass of water obtained by the oven-drying method. The empirical
formula using FID Signal Intensity can be used to calculate the mass of water in every soil regardless of its type. The
type of soil, grain diameter and granulation do not appear to influence the FID Signal Intensity value. The factors that
influence the FID Signal Intensity are the mass of water in soil, the water content in case of poorly sorted soils and the
mass of soil sample in well sorted soils. The statistical analysis were conducted using Statistica 9.1 software.