Performance of Bio-Oil Modified Asphalt Binders Containing Warm-mix Additives

This study focuses on assessing the high-temperature performance of warm mix asphalt binder (WMB) modified with various quantities of date seeds oil (DSO). The penetration, softening point, rotating viscosity tests, and Dynamic Shear Rheometer (DSR) test at the high-temperature range were used for this assessment. The results showed that adding higher percentages of DSO to WMB is not advised; however, the results reveal an improvement in the performance at high temperatures compared to the control asphalt binder when (1.5% DSO) was used.