Particle Crowding Index
Combine the Particle Size Distribution as measured by sedimentometry, with the Specific Surface Area as measured by nitrogen adsorption, to extend the particle size distribution of any powder sample down to a reasonable Ds.
Combining PCI with MBI as the ratio of MBI/PCI (ignoring the exponent 1015 in the PCI measurement) provides an excellent prediction of the plasticity of any given clay and body composition.
The data file for PCI contains information which can be used to assess the IPS (interparticle separation distance) between all particles in all the class sizes, between all the particles in a single class size, and the contribution to rheology of the van der Waals forces of attraction.
KeywordsClay Permeability Porosity Sedimentation Milling
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