Description: This machine is a development of the NAT which was developed by Keith Cooper and Professor Steven Brown at the University of Nottingham. The use of a high precision servo-pneumatic valve in conjunction with a low-friction actuator and sophisticated data acquisition and control, results in a performance that is equal to many servo-hydraulic systems.
Accurate, digitally generated waveforms are applied by the actuator producing repeatable stress variations in test specimens that are simulative of those in a road pavement due to moving traffic. The actuator is double-acting allowing both compressive and tensile forces to be applied. A triaxial cell system is available for the measurement of the resilient modulus of unbound materials.
Feature:
Key Features
- Low cost dynamic loading universal test system ideally suited to testing asphalt and unbound granular materials
- Double acting low friction actuator with integral stroke transducer
- Utilises high performance ceramic spool servo-valve
- High quality stainless steel frame
- Issued with UKAS accredited certificate of calibration for EN 12697-24; EN12697-25, EN 12697-26
- Accessories available to perform a range of standard and non standard test methods
- Can be supplied with standard software to perform EN, ASTM andAASHTO test methods and universal software with which to design non standard test routines
Key Uses
- Assessment of resistance to permanent deformation (rutting)
- Measurement of stiffness modulus
- Assessment of resistance to fatigue cracking
- Resilient modulus of unbound materials
- Mix design
Spesification
| Maximum Load | Electronically limited to 15.5kN |
| Load Transducer | ±20kN |
| Actuator Stroke mm | 30 |
| Frequency Hz | 0 to 30 |
| Electrical Supply¹ | 220-240 Volts 50 Hz @ 13A |
| Compressed Air | 7-10 bar at 600 L/min |
| Dimension mm (WxDxH) | Frame 360 x 400 x 740 Control Box 360 x 280 x 140 |
| Working space required mm(WxDxH) | 825 x 1650 x 2100 when fitted in cabinet CRT-TCC |
| Estimated Weight Kg | Frame 30 Control box 6 |
| PC | Included |
Jl. Radin Inten II No. 62 Duren
Sawit - Jakarta 13440
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