A repeated creep (RC) test was performed on mixture bars in the dynamic shear rheometer (DSR) to investigate the interaction of aged Reclaimed Asphalt Pavement (RAP) binder and virgin binder in different mixtures. The focus of the paper was testing compacted specimens made from 100% RAP and virgin binder. Three RAP sources were tested with three different virgin asphalt contents and two different 100% RAP mixing temperatures. A total of 144 torsion bars were prepared and tested. The overall result of the investigation was that the RC test does not appear optimal for the purpose of evaluating the interaction of 100% RAP mixed with virgin binder. One of the difficulties encountered was preparing torsion bars over a wide range of RAP material properties and virgin asphalt contents. The RC test was able to detect RAP source and virgin asphalt content, but was not able to capture potential differences in mechanical response due to differences in specimen mixing temperature.
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