Servo-Pneumatic Universal Testing Machine
Rapid determination of modulus, permanent deformation and fatigue of bituminous mixtures using cylindrical specimens that are cored from the highway or prepare in laboratory
The Servo-pneumatic Universal Testing Machince CRT-UTM-NU 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 equivalent to 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.
Key Features
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Key Uses
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Software
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- User friendly, intuitive and reliable
- Windows™ software developed using LabVIEW™.
- Standard test software available to meet specific EN, ASTM and AASHTO test methods.
- Universal test software for the development of test methods using static, sinusoidal, haversine, square, triangular with user selected frequencies and data collection rates.
- Stored test data can be imported into a spreadsheet package to be analysed by the user.
- Utilities are included for transducer check, diagnostic routines and calibration.
Calibration & Maintenance
Calibration, Annual Service and Maintenance Contracts are available for this device. UKAS accreditation to satisfy typed testing as described in EN 13108.
Please enquire for further details. Note: This device should be checked and calibrated annually.