AMPT | SPT - Asphalt mixture performance tester
Compact, fully self contained, precision engineered unit
The Pavetest AMPT is a servo-hydraulically controlled testing machine specifically designed to perform the three asphalt tests developed under NCHRP Projects 9-19 and 9-29: Dynamic Modulus, Flow Number and Flow Time. It is also the prescribed equipment in AASHTO T378-17 Standard Method Test for determining the Dynamic Modulus and Flow Number for Hot Mix Asphalt (HMA) using the Asphalt Mixture Performance Tester (AMPT).
In addition, the Pavetest AMPT can also perform AASHTO TP107-17 for determining the Damage Characteristic Curve and Fatigue Analysis Parameters of Asphalt Mixtures in the AMPT, Indirect Tensile Dynamic Modulus, Incremental Repeated Load Permanent Deformation, Semi-circular bend, and Overlay Testing of Asphalt Mixtures.
The Pavetest AMPT is underpinned by Pavetest’s leading edge CDAS digital controller, TestLab software and a full complement of accessories, hardware and software in perfect unison.
The machine includes:
- 8 Channel Control and Data Acquisition System (CDAS) and TestLab software
- 30 mm Actuator LVDT
- Load cell (+/- 20 kN)
- Pressure transducer (+/- 300 kPa)
- Temperature transducer (-80 °C to + 80 °C)
- Magnetically mounted on-specimen LVDT
- 105 mm bottom loading platen
- 105 mm top loading platen
Loading frequency: 0.01-70Hz
Load accuracy: 0.02%FS; resolution 0.04N
Actuator displacement accuracy: 0.25%FS; resolution 0.03um
AMPT LVDT resolution: 0.002um
Confining pressure resolution: 0.01kPa
Traxial cell dimension: >ø270mmx390mm
Temperature accuracy: +/-0.2℃, close to the specimen
CDAS: Option 1: 2 axis, 8 channels
Option 2: 4 axis, 16 channels.
Option of 4 specimens gluing jig
All below tests can be done:
a) Dynamic modulus: AASHTO TP79/T378 , AASHTO T342 / TP62
b) IDT: AASHTO TP31, ASTM D4123, EN12697-24 (E), AASHTO T322/TP9、 ASTM D7369
c) SCB: AASHTO TP105-13, AASHTO TP124, ASTM D8044
d) Overlay: xDOT_Tex-248-F, ASTM Standard WK 26816
e) Ideal-CT: ASTM D8225