Standards:
EN 12697-24 Annex D, EN 12697-26 Annex B, AASHTO T321, ASTM 03, ASTM-D7460
The Pavetest Servo-pneumatic Four Point Bending (4PB) System is a servo-pneumatic testing machine utilizing digital control of a high performance servo valve to provide accurate loading wave shapes up to 60Hz. The 4PB system can be operated in haversine or sinusoidal, controlled stain or sinusoidal controlled stress mode to determine the flexural stiffness/modulus and resistance to fatigue of asphalt beams of various sizes.
Main Features
- Robust four point loading frame.
- Backlash free rotation and translation on all load and reaction points.
- Fully configurable to suit a large range of testing applications.
- High performance servo-valve.
- Long life pneumatic actuator.
- Digital Servo-pneumatic control.
- 2 axis control and 8 channel data acquisition.
B210 KIT comprises:
B210-01 Servo-pneumatic Four Point Bending (4PB) Device with 10 mm actuator LVDT, ± 5 kN load cell. and 2 mm On-specimen LVDT
B205 8 Channel Control and Data Acquisition System (CDAS) & TestLab software
B270-12 Air reservoir assembly with membrane dryer
It requires pressurized air, minimum 7 bar (not included)
Load Frame
- Outer clamp span 355.5 mm (14”) and 420 mm
- Nominal beam size(s): 50 mm (h) x 50 mm (w)
50 mm (h) x 63.5 mm (w)
70 mm (h) x 70 mm (w)
70 mm (h) x up to 85 mm (w)
Servo actuator
- Capacity ± 5 kN
- Frequency Up to 60Hz;
- Stroke 10 mm
- Air supply clean dry air
- Pressure 800-900 kPa
- Minimum rate up to 5 litres/sec
On-specimen transducer
- Range ± 1 mm
- Resolution 0.0002 μm
- Accuracy Better than 5 μm
Power Supply: 90-264V 50/60Hz 1ph 240W (B210 KIT)
Dimensions: 590(h) x 250(d) x 570(w) mm (B210-01)
410(h) x 250(d) x 570(w) mm (B212)
Weight: 45 kg approx. (B210-01)
35 kg approx. (B212)