Mechanistic-Empirical Pavement Design: Materials Testing of Resilient and Dynamic Modulus
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2010-05-31
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Edition:Final Report September 2008 to May 2010
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Abstract:The Mechanistic-Empirical Pavement Design Guide (MEPDG) requires the resilient modulus (Mr) characterization of base and subgrade materials and the dynamic modulus (E*) characterization for hot mix asphalt (HMA). The purpose of this study is to determine the Mr and E* values for typical soil and construction materials used in South Dakota. The testing will allow the South Dakota Department of Transportation (SDDOT) to begin to build a database of the pertinent material input variables for future mechanistic-empirical designs. This report includes materials testing conducted by South Dakota School of Mines and Technology (SDSM&T). SDSM&T recently acquired a Simple Performance Tester (SPT) machine manufactured by Interlaken Technology Corporation, Chaska, Minnesota. The SPT has the ability to perform the resilient modulus, dynamic modulus, and repeated load triaxial tests through the use of operational software developed specifically for the machine. This report includes testing of subgrade materials and hot mix asphalt (HMA) from across the state of South Dakota. It also includes dynamic modulus results for one warm mix asphalt (WMA).
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