Abstract:Plant-produced asphalt mixes can be stored in the silo for a few hours prior to being transported to the construction site. The mixes undergo additional aging during silo storage because of the high temperature in the silo. This additional aging of the mixes is not accounted for during the mix design process and could greatly influence the mix properties. Additional blending between the virgin and recycled binder could also take place in mixes containing reclaimed asphalt pavement or reclaimed asphalt shingles. In this study, four asphalt mixes were collected from different regions within California before and after silo storage. The plant-produced mixes were sampled at the hot drop point directly from the plant discharge, as well as from the silo after storage for 5–16 h. The rutting and cracking behavior of the mixes was assessed using the Hamburg wheel tracking (HWT) test, the repeated load triaxial (RLT) test, and the indirect tensile asphalt cracking test (IDEAL-CT). The rut depth from the HWT test, the flow number and cycles at 5 % permanent strain from the unconfined RLT test, and the CTindex from the IDEAL-CT were determined before and after silo storage. The results clearly show that the silo storage has a notable effect on both the rutting and cracking resistance, even for short durations (i.e., 5–6 h). The rutting resistance, as given by the HWT results, increased for three out of the four mixes after silo storage, whereas the cracking resistance decreased for all mixes.