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PERCENTAGE REFUSAL DENSITY / PRD BS 598-104, EN 12697-32, 13280-4 Consist of : " 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 Weight 10, 7 kg. Accessories: Vibrating Hammer Suitable for compacting asphalt samples. For 220-240 V, 50-60 Hz, 1 ph. Weight 12, 5 kg. Small Tamping Foot 102 mm diameter. Large Tamping Foot 146 mm Diameter 300mm Shank, For Tamping foot
