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Fourteen Years of Accelerated Pavement Testing at Kansas State University
The Accelerated Pavement Testing (APT) program at Kansas State University (KSU) has been in existence for the past 14 years. The Midwest States Accelerated Pavement Testing Pooled Funds Program, a consortium of the Departments of Transportation of Iowa, Kansas, Missouri, and the Nebraska Department of Roads, has been the sponsors for the majority of the tests. Sixteen full-scale pavement tests have been completed since 1997. The majority of the tests were done for side-by-side comparison of new products or processes for both asphalt and concrete pavements. These tests successfully evaluated new products or practices and verified current pavement designs and/or practices for four Midwestern states. Results of a multi-year experiment are now being used for calibration of the new Mechanistic-Empirical Pavement Design Guide (MEPDG) procedure models in Iowa, Kansas, and Missouri. This paper summarizes the confirmation of practices and improvements in highway pavement design and construction that have resulted from the tests conducted at this APT facility. Major findings along with the lessons learned from these experiments are described
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