AUTOMATIC BITUMINOUS COMPACTOR:

AS PER ASTM D-1559

Introduction:

This new apparatus automatically simulates hand compaction as specified in ASTM Test D-1559 (Resistance to Plastic Flow of Bituminous Mixes) and develops uniformity in the test procedure. Supplied complete with operating frame, standard compaction hammer assembly, motor and controls, and compaction pedestal.

General Description and Specifications:

• The new Automatic Bituminous Compactor will accommodate one standard bituminous mould at a time.
• The moulds are held in position by a quick clamping device so that they are easily inserted and removed from the apparatus.
• The apparatus features a new design in the lift and release mechanism to develop uniformity in the height of the drop of the hammer. (The driven mechanism lifts the weight of 4.5kg and drops it through a correct height of 457 mm)
• The basic design of the hammer is the same as that used for the hand compaction procedure.
• The hammer is free to rotate on the guide shaft for a full 360⁰ to eliminate friction in the drop.
• The unit is supplied with an automatic counter which can be preset for 50 or other specific number hammer drops after which it will automatically be shut off.
• Powered by a ½ Hp Motor, the Automatic Bituminous Compactor is available for 220 volts, 50 Hz, AC operation.
• The compactor is supplied with the standard base pedestal which consists of a 300mm x 300mm x 25mm thick steel plate mounted on an 20mm x 200mm oak block as required by the ASTM specifications.