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The needs exists to evaluate a dynamic modulus test apparatus and appropriate test protocols such that the E* test system will be accepted by DOT's as a method to characterize HMA mixes for design purposes. This report out lines the process.
NCHRP Project 9-29, "Simple Performance Tester for Superpave Mix Design," is a multi-phase effort to develop 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 (MEPDG). In the phase of the project reported here, ruggedness testing was conducted with the SPT for the dynamic modulus and flow number tests developed in NCHRP Project 9-19 as simple performance tests for permanent deformation.
Explores whether combining the environmental conditioning system with the simple performance test would provide a superior procedure for determining the moisture susceptibility of hot-mix asphalt (HMA).
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.