The PAVELAB50® gives the exact measurement of bitumen quantities in hot-mix samples. The bitumen sample can be used in other tests (penetration, softening point, etc.), and the aggregates (including filler) are separated, dried, and are ready for gradation immediately.
Most of the work is done for you, leaving you free to handle other tasks or just take a break (You don’t have to tell your boss that though).
How it Works
The asphalt sample is placed in a washing drum lined with a special mesh designed to separate bitumen and filler from the sample. Solvent and ultrasonic motion is added to ensure complete separation.
The mixture of filler/bitumen/solvent is then centrifuged to separate out the filler. The aggregates and filler are dried by forced air circulation and the residue of solvent is recovered.
The remaining bitumen/solvent solution is distilled and separated into two different tanks. Part of the solution can be drained off before distillation and connected to a flask for use with a rotary evaporator to recover a bitumen sample for other tests. The clean distilled solvent is recycled for other extractions.
*The unit should be connected to a water cooling unit to feed the three different cooling coils of the apparatus.
Fully automatic test cycle: