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)
The 4PB System is underpinned by Pavetest’s leading edge CDAS digital
controller, TestLab software and a full complement of accessories,
hardware and software in perfect unison.
TECHNICAL SPECIFICATIONS
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)
RECOMMENDED ACCESSORIES
B221 Temperature controlled cabinet: -20 °C to +70 °C to
suit DTS-16 or 4PBA
H009-01EN PC complete with LCD monitor 22”, keyboard, mouse,
cables and installation of Testlab software
B270-12
B210-02 PVC Beam Air reservoir assembly with membrane dryer
4PBA on DTS16:
B210-01 Servo-pneumatic Four Point Bending (4PB) device with
10 mm actuator LVDT, ± 5 kN load cell and 2 mm
Onspecimen LVDT (sharing CDAS with DTS 16)
It requires pressurized air (not included).
4PBA on DTS30:
B212 4PB JIG (sharing CDAS with DTS 30)
4PBA on DTS130:
B210-01 Servo-pneumatic Four Point Bending (4PB) device with
10 mm actuator LVDT, ± 5 kN load cell and 2 mm
Onspecimen LVDT (sharing CDAS with DTS 130)
B270-12 Air reservoir assembly with membrane dryer
It requires pressurized air (not included).
NEEDED ACCESSORIES
B210-02 4PB PVC Beam
B210-03 4PB Reference beam
B250-07 KIT Temperature measuring kit comprising:
B292-01 Temperature transducer (-80 °C to +80 °C) (2 pieces)
B250-10 Dummy asphalt specimen
B250-11 100 mm O ring (3 pieces)
B250-12 Thermal conducting grease (about 56 g)
