Characterization of Alaskan HMA Mixtures With the Simple Performance Tester

015446472014Final ReportPDFTech Report4000092INE/AUTC 12.21AKSAS 63693/FHWA 4000092T2-10-10Hot mix paving mixturesPavement designPavement performanceDynamic modulus of elasticityRuttingBindersFlowMaterials testsResearch HubHighwaysMaterialsPavementsI22: Design of Pavements, Railways and GuidewaysI31: Bituminous Binders and MaterialsAlaskaUnited StatesAlaska. Dept. of Transportation and Public Facilities. Research, Development and Technology TransferLi, PengLiu, JuanyuAlaska University Transportation CenterUnited States. Federal Highway AdministrationUS Transportation CollectionMaterial characterization provides basic and essential information for pavement design and the evaluation of hot mix asphalt (HMA). This study focused on the accurate characterization of an Alaskan HMA mixture using an asphalt mixture performance tester (AMPT) and an asphalt pavement analyzer (APA). The tests performed on the AMPT included dynamic modulus (|E*|), flow number (FN), and flow time (FT). The APA was used to measure the rutting resistance of HMA. A catalog of |E*| for typical Alaskan HMA mixtures is provided, and the prediction models of |E*| have been verified. The modified Witczak model (G* based) is recommended for estimating |E*| HMA when measured G* of binder is available, and the Witczak model (\u14b based) is recommended when default inputs of binder are used. The correlations between the results from the AMPT (i.e., |E*|, FN, FT) and the rutting depth obtained from the APA have been statistically analyzed