TRB's National Cooperative Highway Research Program (NCHRP) Report 614: Refining the Simple Performance Tester for Use in Routine Practice explores the develop of a practical, economical simple performance tester (SPT) for use in routine hot-mix asphalt (HMA) mix design and in the characterization of HMA materials for pavement structural design with the Mechanistic-Empirical Pavement Design Guide.
National Academies of Sciences, Engineering, and Medicine. 2008. Refining the Simple Performance Tester for Use in Routine Practice. Washington, DC: The National Academies Press. https://doi.org/10.17226/14158.
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