Percentage Refusal Density (Prd)

Percentage Refusal Dencity (PRD) is defined as the ratio of the initial dried bulk density of the sample to the final density ( refusal density ) expresed as a percentage BS 598 - 104 Percentage Refusal Density (PRD) is defined as the ratio of the initial dried bulk density of the sample to the final density ( refusal density )expressed as 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. 
Part Name                                         Specification                                             Qty
Vibrating Hammer        Suitable for compacting soil samples, Electric, 220 Volt.     1 Pc
Mold and Base Plate     Small : 4’’ (101.6 mm) id. Large : 6’’ (152.4 mm) id.         1 Pc
Tamping Foot               Small : 102 mm diameter. Large : 146 mm diameter          1 Pc
Shank                         300 mm long for tamping fool                                           1 Pc

Weight : 35 kg