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

fYear

2011

fDate

Oct. 29 2011-Nov. 1 2011

Firstpage

533

Lastpage

536

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International

Conference_Location

Natal

ISSN

Pending

Print_ISBN

978-1-4577-1662-1

Type

conf

DOI

10.1109/IMOC.2011.6169303

Filename

6169303