The Octave program, kdKVMBscan.m, permits a view of the mapped KV damping ratio as a function of hydraulic conductivity. The symbol, Kd, is used in this discussion to represent hydraulic conductivity (units ). Any good text on soil mechanics can be reviewed for the difference between absolute permeability and hydraulic conductivity. Permeability (units ) is a concept without context of fluid present. The concept of hydraulic conductivity adds the context of fluid viscosity. Thus, figures showing Kd on an axis are for a specific fluid present, and this is hard wired to water and it's viscosity.
Figure 67 shows two alternative ways to plot the representation. Hydraulic conductivity is the horizontal axis in (A), and an effective ``pore diameter'' in mm is shown in (B). The curves are plotted for 15 Hz shaking.
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pm 2018-04-08