Ince C.B.Geçkil T.2024-08-042024-08-0420220350-2465https://doi.org/10.14256/JCE.3358.2021https://hdl.handle.net/11616/90599In this study, the recycled PET is used in bitumen modification by applying a different process in order to eliminate the phase separation problem. For this purpose, modified bitumens are obtained by adding the triethanolamine (TEOA) chemical (wt. 2.5 %) and PET (wt. 2, 4, 6, 8, 10 %) to pure bitumen. The properties of modified bitumens are determined by chemical, physical, and rheological tests. According to the test results, bitumen reacts with PET, and 6 % PET ratio is a critical value. At this ratio, the resistance of bitumen to deformations at high and low temperatures increases significantly. © 2022 Union of Croatian Civil Engineers and Technicians. All rights reserved.eninfo:eu-repo/semantics/openAccessBitumencharacterizationmodificationrecycled PETrheological propertyTEOAArticle74210511410.14256/JCE.3358.20212-s2.0-85128826878Q4