The 4PB Four Point Bending System from Pavetest is a servo-pneumatic testing machine designed for the flexural testing of asphalt beams. Using digital control of a high-performance servo valve, the system provides precise loading waveforms up to 60 Hz in either haversine or sinusoidal mode.
This system allows testing in controlled strain or controlled stress mode, enabling accurate determination of flexural stiffness, modulus, and fatigue resistance for asphalt specimens of varying sizes.
The machine comprises:
It requires pressurized air, minimum 8 bar (not included)