These tests methods are used for quantitative determinations of bitumen in hot-mixed paving mixtures and paving samples for specification acceptance, service evaluation, control and research.
These methods prescribe the solvent or solvents that can be used for the binder extraction and recovery.
The representative bitumen sample can be used to perform other tests such as penetration, softening point, etc.. Aggregates, including filler, are also separated and remain available for sample grading.
We are proposing several models of extraction system, including the Automatic Closed-System Asphalt Analyzer.
Operating principle
The asphalt sample (maximum 3.5 kg) is placed in a washing drum lined with a sinthered multilayer mesh with openings 0.063, 0.075 or 0.090 mm wide and it is fitted into the washing chamber. Bitumen and filler are separated from the sample by washing with solvent and ultrasonic motion. The mixture of filler/bitumen/solvent is then centrifuged and the filler is separated. The aggregates and filler are dried by forced air circulation and the residue of solvent recovered by condensation.
The remaining bitumen/solvent solution is distilled and separated in two different tanks. Part of the bitumen/solvent 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 analyzer shall be connected to a suitable water cooling unit to feed the three different cooling coils of the apparatus (see Accessories).
PAVELAB50 Automatic Closed-System Asphalt Analyzer consists in:
Machine body: steel sheet, powder coated with epoxy resin. Wheel mounted.
Washing chamber: high quality stainless steel fitted with ultrasonic equipent, heating system, driving device for the rotation of the washing drum, valves, connections, etc.
Washing drum (separate accessory): Lined with three layer sinthered, high resistance screening mesh, 0.063 or 0.075 or 0.090 mm opening. This unit includes seating, support and closing ring for the cover. Each model should be fitted with the appropriate cover (see Accessories).
Centrifuge: high speed centrifuge for 120 mm diameter cup, complete with safety switch.
Condenser: Stainless steel tank complete with cooling coil for condensation of solvent vapour during the drying operation.
Forced air circulation pump: for drying aggregate and filler.
Recovery/distillation unit: double chamber, one used as a reservoir. The distillation chamber comprises a base and upper heater providing solvent recovery up to approx. 30 litres/hour, and cooling coils above the chamber incorporated in the cover. Both chambers are fitted with drain valves.
Sampling device for Rotary evaporation: a fast connection for the Rotary evaporator flask for bitumen solution collection is also available. See Accessories 75-PV5X100.
7" Touchscreen control panel: for controlling and operating the machine.
Balance option: for the accurate measurement of asphalt samples model 75-PV50A25 only).
Water cooling system: the machines have to be connected to a suitable water cooling system which is not included and have to be ordered separately. See Accessories.
Safety features: The machines stops immediately if a lack of water, electric motor malfuncions etc. are detected and the reason for the stoppage is shown on the control panel display. The doors are locked when the test is running.
Maximum sample size: 3.5 kg
Centrifuge rotation speed: 6000 rpm
External cup nominal dimensions: 120 mm x 200 mm h (diameter x height)
Maximum filler capacity: approx. 300 g
Extraction time (including drying of aggregate and filler): approx. 55 minutes
Solvent used per extraction: approx. 10 liters (recycled)
Power rating: 6 kW (excluding water cooling system)
Overall dimensions: approx. 1400 x 750 x 1500 mm (w x d x h)
Weight: approx. 240 kg
75-PV50A15
PAVELAB 50 Automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents. 380V/50Hz/3ph+N
75-PV50A16
PAVELAB 50 Automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents. 220V/60Hz/3ph+N
75-PV50A25
PAVELAB 50 Automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents. Complete with integrated scale. 380V/50Hz/3ph+N
75-PV50A26
PAVELAB 50 Automatic Closed-System Asphalt Analyzer for separation and extraction of bitumen, filler and aggregates from asphalt samples by use of solvents. Complete with integrated scale. 220V/60Hz/3ph
75-PV0005/2
Lining paper for centrifuge cup
75-PV5X010
Washing drum 0.063 mm opening
75-PV5X010/C
Washing drum 0.063 mm opening complete with traceable certificate of wire mesh opening
75-PV5X020
Washing drum 0.075 mm opening
75-PV5X030
Washing drum 0.090 mm opening
75-PV5X100
Sampling device and clamp for Rotary evaporator (to be ordered at the time of order)
75-PV5X110
Testing device to verify the stability of recycledsolvent from the pH value
75-PV5X120
Solvent stabilizer. 1000ml bottle. For restabilization of recycled solvent
75-PV5X145
Water cooling system providing water between 5°C and 10°C, flow rate 10 l/min at 6 bar. 400V/50Hz/3ph.
75-PV5X146
Water cooling system providing water between 5°C and 10°C, flow rate 10 l/min at 6 bar. 220V/60Hz/3ph.
75-PV5X150
Centrifuge cup, 120 mm dia.
75-PV5X160
Device for the extraction of the centrifuge cup
75-PV5X170
Upgrade with additional electrovalve at the cooling water inlet, that stops the water flow when the dirty solvent has been completely recovered. Suitable for tap water use only. Not compatible with 75-PV5X180.
75-PV5X180
Upgrade of the cooling system series 75-PV5X14X with fast connection pipes. Not compatible with 75-PV5X170.
75-PV5X200
Solvent pumping device for safe asphalt analyzer solvent filling. This universal system pumps the solvent from any kind of tank to the machine tank in a safe way without dispersed solvent vapours in the laboratory. 110-230V/50-60Hz/1ph
75-PV50/KIT
Kit of accessorier for PAVE ANALYZER, complete with: - 75-PV5X010 Washing drum, 0.063 mm mesh - 75-PV5X040 Closing lid for washing drums - 75-PV5X150 Centrifuge cup, 120 mm diameter - 75-PV0005/2 Lining paper for centrifuge cup. Pack of 100
82-P0172/B
24 columns serial printer, rechargeable battery operated. External battery charger and batteries included. 110-230V/50-60Kz/1ph
75-PV5X040
Closing lid for washing drums
