This project was originally funded with Principle Investigator (PI) Dr. Soonkie Nam, with Dr. Bret Lingwall as co-PI serving in a support role. The project began in late 2015, and the project was turned over to Dr. Lingwall as PI when Dr. Nam left SDSMT in August of 2017. Due to insurmountable equipment malfunctions, none of the dynamic modulus or flow number tests performed by the research team are reliable for use by SDDOT. The results are skewed by large temperature swings in the equipment. Despite many attempts to repair, the device continuous to pump heat into test specimens. As a result, we have agreed that the project be terminated. This report serves, by the mutual agreement reached on December 20th, 2019 at our in-person meeting in the Geotechnical Engineering Laboratory at The South Dakota School of Mines and Technology (SDSMT) (and confirmed in our follow-up communications) to summarize the work performed and close-out the research project SDDOT 2014-21.
Many states around the country still use the 1972, 1986, or 1993 AASHTO Design Guides, which rely on empirical relationships between paving material p...
This report documents the effort to develop a practical relation between the cracking tolerance index and portions of the dynamic modulus curves of as...
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United States Department of Transportation
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