Percentage Refusal Density / PRD

BI-460 Percentage Refusal Density / PRD, 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: BI-461 PRD Split Mould and Baseplate Weight 10,7 kg. Accessories: BI-462 Vibrating Hammer Suitable for compacting asphalt samples. For 220-240 V, 50-60 Hz, 1 ph. Weight 12,5 kg. BI-463 Small Tamping Foot 102 mm diameter. BI-464 Large Tamping Foot 146 mm Diameter BI-465 300mm Shank, For Tamping foot Also required, but not part of this: Drying Oven Specific Gravity & Absorbtion of Coarse aggregate Test Set
density meter