802639.fig.004a
(a)
802639.fig.004b
(b)
Figure 4: Relation between conductivity and moisture content. (a) Standard curve for logarithm of surface electrical resistivity versus MC below 8% for 63 specimens. -axis represents moisture content and -axis represents logarithm of surface electrical resistivity. (b) Standard curve for logarithm of surface electrical resistivity versus logarithm of MC above 8% for 97 specimens. -axis represents logarithm of moisture content and -axis represents logarithm of surface electrical resistivity.