Acquisition of a high-quality temperature chamber

Final reportPDFResearch Paperhttp://ntl.bts.gov/lib/27000/27000/27007/RE169_CR.pdfUTC-RE1699074DTRS98-G-0021Temperature endurance testsAsphalt testsHot mix paving mixturesAsphalt mixturesLaboratory testsMissouri University of Science and Technology. Center for Infrastructure Engineering StudiesUniversity Transportation Centers Program (U.S.)Richardson, David N.Missouri University of Science and Technology. Center for Infrastructure Engineering StudiesUniversity Transportation Centers Program (U.S.)United States. Dept. of Transportation. Research and Special Programs AdministrationLusher, Steven M.NTL-HIGHWAY/ROAD TRANSPORTATION-Pavement Management and PerformanceNTL-HIGHWAY/ROAD TRANSPORTATION-MaterialsUS Transportation CollectionWith the Missouri Department of Transportation (MoDOT) beginning to implement the new Mechanistic-Empirical (M-E) Design Guide for New and Rehabilitated Pavements, the need exists for various types of testing of hot-mix asphalt (HMA) mixes used by MoDOT in its flexible pavements. In particular, the American Association of State Highway and Transportation Officials (AASHTO) test protocol T 322 is utilized to determine HMA properties needed as inputs to pavement distress prediction modelswithin the M-E Pavement Design Guide (MEPDG) Software. The primary properties derived from T 322 are creep compliance and tensile strength. These properties are determined using indirect tension methods and are temperature dependent. Creep compliance is a parameter used in the thermal cracking distress model within the MEPDG Software and is determined at 0, -10, and -20\uc2\ub0C while tensile strength is an input to the fatigue cracking distress model and is determined at temperatures ranging from -20 to +20\uc2\ub0C