The temperature control system Linkam THMSE 600 coupled with an Agilent 34970A data acquisition unit was used for electrical
resistivity measurements of the GSS powder samples during the heating and the cooling.
Considering the earth as a uniform, homogeneous and isotropic half-space (from now on, all "uniform" structures will be considered as homogenous and isotropic), the potential field generated by the Wenner electrode array can be computed and this way to relate the soil
resistivity to the electrode array geometry [9-11]:
These results concluded that
resistivity of soil increases with increasing SPT (N) and angle ofinternal friction while it decreases with increasing moisture content and cohesion.
As shown in Figure 9, the volume
resistivity of the sample increases with the increase of the injection pressure.
The present research effort is aimed at determining the geotechnical characteristics of the subsurface structures using both electrical
resistivity and seismic refraction methods so as to determine its competence in siting engineering structures.
Resistivity anomalies indicated that the adit entrance had been collapsed.
While the electrical conductivity is significantly increased, the
resistivity decreases from 1.
The problems of reduced exchange capacity in aging cartridges are compounded by the fact that the standard
resistivity monitors employed in many labs to notify users of changes in water quality are often unable to detect the subtle changes in
resistivity caused by increasing concentrations of ionic contaminants.
Keywords:
Resistivity VES Bridge Site Investigation and Darfur.
Geoelectrical
resistivity surveying has become an important and useful tool in hydrogeological studies, mineral prospecting and mining, as well as in environmental and engineering applications [Griffiths & al.
But electrical
resistivity is more suitable procedure as it is effective for dense station spacing and spatial aliasing.
Studies have shown that the surface
resistivity test is a promising alternative to the RCPT.
