In this study, the recycled PET is used in bitumen modification by applying a different process order to eliminate phase separation problem. For purpose, modified bitumens are obtained adding triethanolamine (TEOA) chemical (wt. 2.5 %) and 2, 4, 6, 8, 10 pure bitumen. The properties of determined chemical, physical, rheological tests. According test results, reacts with PET, 6 % ratio critical ...