Title :
Frequency domain reflectometry in the determination of dielectric constant of bentonite
Author :
Anjos, Ivson F dos ; Freire, R.S.C. ; Barbin, S.E.
Author_Institution :
UFCG-Fed. Univ. of Campina Grande, Campina Grande, Brazil
fDate :
Oct. 29 2011-Nov. 1 2011
Abstract :
This work presents the determination of the humidity and the dielectric constant of bentonite using a probe based on the frequency domain reflectometry (FDR) method. The basic principle of the probe used in this study is the measurement of the refractive index of the soil √ε at 100 MHz to allow the determination of the humidity through a known relation between these quantities. The value of 0.99 for the correlation coefficient obtained in this study demonstrated an accurate relationship between the humidity and the dielectric constant of bentonite. Also in this study the humidity of the bentonite using the FDR method was compared to the values obtained using the calcium carbide method.
Keywords :
humidity measurement; optical correlation; permittivity; reflectometry; refractive index measurement; soil; bentonite; calcium carbide method; correlation coefficient; dielectric constant; frequency 100 MHz; frequency domain reflectometry; humidity determination; refractive index measurement; soil; Calcium; Dielectric constant; Humidity; Minerals; Probes; Soil; Soil measurements; Bentonite; Calcium carbide method; Humidity; Permittivity; Refractive Index;
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
978-1-4577-1662-1
DOI :
10.1109/IMOC.2011.6169303
