The TBTPAV-II bitumen PAV system consists of the TBTPAV-I Pressure Aging Vessel (PAV) and the TBTPAV-II Vacuum Degassing Oven (VDO).
The pressure aging vessel simulates the accelerated aging process of asphalt binders in service on roads by using high pressure and temperature.
The vacuum degassing oven removes air bubbles created during the in-service oxidative aging of asphalt binder. The aging process begins with the binder being first aged using T 240 (RTFOT, where TBT-0610W is the suitable model). A specified thickness of residue from the RTFOT is then placed in stainless steel pans and aged at the designated aging temperature for 20 hours in a vessel pressurized with air to 2.10 MPa. The selected aging temperature depends on the grade of the asphalt binder. Following the completion of the PAV process, the asphalt binder residue is then vacuum degassed.
The TBTPAV-II system is certified under the ISO 9001 quality management system for safety supervision.

• Industrial touch screen controller that displays temperature and pressure in real time
• Controller features a delay start function
• Displays and automatically calculates temperature error time
• Supports remote control by computer via network cable
• Equipped with a USB communication port for easy data export
• PAV can run the aging process for up to 99 hours
• High-accuracy temperature control
• Automatic pressure release and overshoot prevention functions
• The pressure chamber's maximum pressure is designed to be 8 times the rated working pressure

PAV-1 pressure aging vessel is designed to simulate in-service oxidative aging of asphalt binder by exposure to elevated temperatures in a pressurized environment.

• Electricity
  • Power supply: AC (220±10%)V, 50Hz
  • Rated power: 1100W
  • Rated current: 10A
• Vessel
  • Volume: 13L
  • Medium: air
  • Rated working temperature: 110℃±5℃
  • Rated working pressure: 2.1MPa
  • Designed pressure: 2.2 MPa
  • Water pressure: 2.75 MPa
  • Safety valve opening pressure: 2.15 MPa
  • Explosive pressure for rupture disk: 2.6 MPa
• Pressure controller
  • Model: WP962-2(WP-D90)
  • Precision: ±0.01MPa
• Temperature and time controller
  • Model: WP962-1(WP-D90)
  • Temperature control precision: ±0.1℃
  • Grading: 64×1080min
  • Outage maintaining function: Yes
• Dimension: 630mm×450mm×500mm

• Electricity
  • Power supply: AC (220±10%)V, 50Hz
  • Rated power: 900W
  • Rated current: 10A
• Vessel
  • Volume: 13L
  • Medium: air
  • Rated working temperature: 180℃±5℃
  • Rated working pressure: absolute pressure 15kPa
  • Pressure control mode: electric contact pressure gauge
• Temperature and time controller
  • Model: XMT-E55T2
  • Temperature control precision: ±0.1℃
  • Time control mode: button
• Dimension: 560mm×390mm×350mm