Edinburgh Napier University

  Some earlier data were analysed, searching the relation between the minimum dry density emax and the two grading entropy parameters (mean log diameter and fraction number characteristic). The data were split into two components. The first data component – constituting the major part of the density – was the linear function of the mean log diameter, the second one followed the shape of the entropy diagram and it was about the same for the constant vale of the mean log diameter. The density– in terms of normalized the mean log diameter– was maximal around at the point where internal structure changed.