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Asphalt Mixture Performance Tester (AMPT)
The AMPT is a computer–controlled hydraulic testing machine capable of subjecting a compacted asphalt mixture specimen to cyclic loading over a range of temperatures and frequencies. The device evaluates asphalt mixture properties to assess potential performance. Transportation agencies can use the AMPT to develop inputs for the structural design of flexible pavements and to obtain information helpful in monitoring mixes and performing quality assurance. The AMPT builds upon past efforts to develop a testing device for determining fundamental asphalt mixture performance properties. The current equipment and test methods have been developed to optimize both testing time and cost. The AMPT has also been known as the Simple Performance Tester (SPT) in earlier research work and references.
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