POROSIMETER AS A MEANS TO MEASURE THE COMPACTIBILITY OF POWDERS

Samples of silica fume powder prepressed in the form of slabs under re latively small pressures and cut in spheres were coated with a thin fl exible latex film by dipping them into the water emulsion of the natur al latex, and their densification behavior was studied using the commo n mercury, intrusion porosimeter. The samples were compacted at isosta tic pressure conditions by increasing the mercury pressure, and the vo lume changes as a function of pressure were recorded. The recorded pre ssure/volume changes provided information about the compaction course of the original green powder compacts in a continuous fashion.