PAV to simulates in-service oxidative aging that occurs in
asphalt binders during service after 5 to 10 years (long-term
aging). The sample is exposed to high pressure and temperature for
20 hours (selectable up to 99). The Pressure Ageing Vessel (PAV)
features 100% compliance with the laboratory standards related to
aging the bitumen. The unit consists of a stainless steel vertical pressure
vessel (AISI 304 with ASME and CE certifications) enclosed in a
cabinet with encased band heaters. A source of compressed air with
a pressure of at least 2.1 MPa and a pressure regulator generates
and maintains the aging condition required.
MAIN FEATURES
Sturdy stainless steel frame and vessel.
Fast pre-heating system selectable up to 60 °C in
order to reduce the conditioning time.
Timer for setting time and date to start the machine
at the desired time.
Innovative cooling system.
Fully automatic, Semi-Automatic and Manual tests.
Temperature and pressure monitored in real time.
Integrated 7’ colour Touch screen controller.
Pressure monitored in real time by transducer and
controlled to 2.1 ± 0.1 MPa.
CE and ASME certification.
The unit is equipped with a 7’’ colour Touch screen controller with
front panel user interface with easy to use step-thru operation. The
user-friendly software allows the operator to carry out the test in different
modes:
– AUTOMATIC: It’s possible to select from 4 different temperatures
(85, 90, 100, 110 °C) and 2 different testing time (20 or 65 hours).
– SEMI-AUTOMATIC: It’s possible to select a temperature from 60
to 120 °C and run the test for 20 or 65 hours as in the automatic
mode;
– MANUAL: This mode can be used in research and it allows to
manually select the temperature from ambient to 130 °C and the
testing time from 1 to 99 hours.
Temperature and pressure can be monitored in real time, thanks
to a platinum RTD probe and a pressure transducer. Data logs of both
temperature, aging time and pressure are saved on USB stick at the
end of the test.
A pre-heat mode allows to reach a maximum of 60 °C before introducing
the sample in safety conditions reducing the conditioning time
of the sample that can reach faster the test temperature. Thanks to
an innovative heating system and the pre-heating mode the test can
start in around 1 hour.
The instrument is supplied complete with a sample rack for the
simultaneous testing of ten specimens, ten specimen pans as per
standards, but without compressed air source, 2.1Mpa minimum
pressure.
TECHNICAL SPECIFICATION
Operating pressure: 2.1 ± 0.03 Mpa (304 psi)
Programmable temperature range: from ambient temperature to
130 °C, res: ± 0.1 °C
Programmable pre-heating function: up to 60 °C
Test temperature uniformity: ± 0.5 °C
Testing time: up to 99 hours
Safety equipment in all test conditions: Over pressure relief valve
and Over temperature limit switch.
Power supply: 110 – 230V 1Ph 50-60Hz 10A
Dimensions: 450x650x500 mm approx.
Weight: 80 Kg approx.
ACCESSORY
B091M-11 PRESSURE REGOLATOR
to connect the compressed
air tank to the
PAV, for an adequate inlet
pressure.
SPARES
B091M-10 Sample rack, for testing
up to 10 samples at the
same time
B064-04 Stainless steel container,
diameter 140×9.5 mm
B091M1
PAV – RESEARCH VERSION
Same to B091M but implemented with an electronic pressure valve
to adjust the test pressure from ambient to 2.4 MPa, regulated from
the control panel.
