TY - GEN
T1 - Consequences of electromagnetic stimulation on hydraulic conductivity of soils
AU - Farid, A.
AU - Azad, S.
AU - Browning, J.
AU - Barney Smith, Elisa H.
PY - 2013
Y1 - 2013
N2 - Hydraulic conductivity is a measure of the rate at which water flows through porous media. Because of the dipole properties of water molecules, any electric field can affect hydraulic conductivity. In this study, the effect of radio-frequency (RF) waves on hydraulic conductivity is investigated. This is important both for the geophysical measurement of hydraulic conductivity as well as remediation using electromagnetic waves. Bentonite clay and sandy samples are tested in rigid-wall, cylindrical permeameters and stimulated using a CPVC-cased monopole antenna vertically centered in the permeameters. The permeameters are encased within RF cavities constructed of aluminum mesh in order to prevent interference from outside and to confine the RF wave to the medium. Falling-head and constant-head tests are performed to measure the hydraulic conductivity of the clayey and sandy soil samples, respectively. The results show a correlation between the change in the hydraulic conductivity and the characteristics of the RF stimulation. The change is, however, different for sandy and clayey soils.
AB - Hydraulic conductivity is a measure of the rate at which water flows through porous media. Because of the dipole properties of water molecules, any electric field can affect hydraulic conductivity. In this study, the effect of radio-frequency (RF) waves on hydraulic conductivity is investigated. This is important both for the geophysical measurement of hydraulic conductivity as well as remediation using electromagnetic waves. Bentonite clay and sandy samples are tested in rigid-wall, cylindrical permeameters and stimulated using a CPVC-cased monopole antenna vertically centered in the permeameters. The permeameters are encased within RF cavities constructed of aluminum mesh in order to prevent interference from outside and to confine the RF wave to the medium. Falling-head and constant-head tests are performed to measure the hydraulic conductivity of the clayey and sandy soil samples, respectively. The results show a correlation between the change in the hydraulic conductivity and the characteristics of the RF stimulation. The change is, however, different for sandy and clayey soils.
UR - http://www.scopus.com/inward/record.url?scp=84884776041&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84884776041
SN - 9781934142264
T3 - Progress in Electromagnetics Research Symposium
SP - 1510
EP - 1514
BT - PIERS 2013 Stockholm - Progress in Electromagnetics Research Symposium, Proceedings
T2 - Progress in Electromagnetics Research Symposium, PIERS 2013 Stockholm
Y2 - 12 August 2013 through 15 August 2013
ER -