1 Does the coefficient of uniformity,coefficient of curvature, sorting coefficient etc. defined for particle size distributions (PSD) in terms of mass fraction~pore size are the same or correlate anyhow to the corresponding quantities in PSDs expressed in terms of volume fraction~pore size?
2 Bulk specific gravity of the material, for which PSDs are in volume fraction~pore size, is known. Now does this mean, normalized PSDs expressed in either mass or volume are the same, as there is just a constant multiplier 'density'? (mass=volume*density)
My experience comes from comparing distributions analysed using gravitational separation and laser scanner. For sources that are relatively uniform or homogeneous in density (all from a high quality part of a lot sampled), there is little practical difference in shape of distribution and arbitrary factors based on particle density can be used.
More commonly, different material types that have been analysed for PSD have demonstrate densities and particle shapes throughout the distribution making it impractical to convert. In these cases i have worked to ensure that all analysis is done with the same PSD analysis, volumetric or density, to evaluate the material sampled.
Or, in short, depending on your material of interest it may not be practically possible to make a conversion.
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