ABSTRACT
The particle size distribution (PSD) and specific surface area (SSA) are complementary parameters that give information about the fineness of a powder. They can be combined to get information about the state of agglomeration and morphology of a powder. The state of agglomeration of a powder has an influence on its dispersibility, its packing and, hence, the rheology of a suspension; this is of critical importance in the fluidity of cementitious materials.
