From Testing to Design: An Easy Way to Use and Interpret the Results from the Asphalt Mixture Performance Tester (AMPT)

Luis G. Diaz ； Adrián R. Archilla

《International Journal of Pavement Research and Technology》 6卷5期 (2013/09) Pp. 527-538

https://doi.org/10.6135/ijprt.org.tw/2013.6(5).527

並列摘要

While technologies available today allow the precise determination of material fundamental properties to be used in mechanistic pavement designs, these technologies are often confined to the realm of research and theoretical analysis at universities and research centers. A reason commonly cited to explain this situation is the scarcity of trained personnel to properly interpret the results obtained from these tests, often perceived as ”too complex”, ”research grade”, or ”not practical”. In an effort to facilitate the use of perceived complex results from asphalt dynamic modulus tests into routine pavement engineering practice, a software application, identified as the HMA Analysis Tool (HMA AT), was developed to automatically generate the mixture's modulus master curve using the output files from the commercially available Asphalt Mixture Performance Tester (AMPT). The capabilities and applicability of the HMA AT software application were demonstrated using actual |E*| test results from unmodified and polymer modified asphalt mixtures evaluated by the University of Hawaii. Examples of practical applications in which the results obtained from determining the dynamic modulus master curve from actual test data are utilized include Data Quality Control (DQC) procedures, an example of analysis of the effect of binder type and compaction level on the mechanical response of a mix, and the generation of input modulus values potentially useful as input in pavement design methods. It is expected that the examples presented in this paper provide a glimpse of practical applications in which data generated with the AMPT can be used, and will hopefully contribute to generate ideas about how interested users could make the most out of the data generated with their AMPT systems.

並列關鍵字

AMPT ； Asphalt ； Dynamic modulus ； Master curve ； Performance Testing

參考文獻

AASHTO Designation T342-11.Standard Method of Test for Determining Dynamic Modulus of Hot Mix Asphalt (HMA).

Bonaquist, R. (2008). Refining the Simple Performance Tester for Use in Routine Practice. NCHRP Report 614. Transportation Research Board, Washington, DC, USA.

Bonaquist, R. (2008). Ruggedness Testing of the Dynamic Modulus and Flow Number Tests with the Simple Performance Tester. NCHRP Report 629. Transportation Research Board, Washington, DC, USA.

AASHTO Designation TP79-12 (2012). Standard Method of Test for Determining the Dynamic Modulus and Flow Number of Hot Mix Asphalt (HMA) Using the Asphalt Mixture Performance Tester (AMPT).

Papagiannakis, A and Masad, E. (2008). Pavement Design and Materials, John Wiley & Sons, Hoboken, NJ, USA.