AMPT/SPT Asphalt Mixture Performance Tester
The 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 TP 79-09 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 AMPT can also perform Direct Tension Cyclic Fatigue, Indirect Tensile Dynamic Modulus, Incremental Repeated Load Permanent Deformation and Overlay Testing of Asphalt Mixtures. The AMPT is underpinned by leading edge CDAS digital controller, TestLab software and a full complement of accessories hardware and software in perfect unison.
CDAS Digital Controller:
The compact Control and Data Acquisition System (CDAS) delivers unparalleled performance, real time control and ultimate versatility in acquisition. The CDAS provides excellent waveform fidelity from integrated acquisition and control functions, with low level sampling at speeds of up to 200,000 samples per second simultaneously on all channels (using up to 64x oversampling) gives superior low noise performance and resolution of 20 bit over the full dynamic input signal range (no auto ranging required).
Developed with ultimate flexibility in mind, TestLab test and control software caters to all levels of operator experience. By use of pre-programmed “Method files”, an inexperienced operator can run a range of international test methods without the need for any programming. Moreover, a test “Wizard”, available with popular tests can guide the operator step by step based on a “recipe book” approach. Most importantly, the experienced engineer and/or researcher need not be constrained by the functions and analysis in the method files provided. The operator may, clone, modify and/or generate his/her own method file to suit their specific requirements. The Excel based data analysis offers the operator the flexibility to implement alternative analysis and customized reporting facilities.
TestLab allows for real time graphing of results and configurable real time transducer levels display with unprecedented clarity of results and analytical power.