Percentage Refusal Density / PRD, is defined as ratio of the initial dried density of the sample to the final density ( refusal density) expressed a percentage.
The sample bulk density is determined by weighing in air and water. It is then heated in a split mould and compacted to refusal using a vibrating hammer. The final density is obtained by weighing in air and water.
Main Unit:
PRD Split Mould and Baseplate
Accessories:
Vibrating Hammer
Small Tamping Foot
Large Tamping Foot
300mm Shank
