TY - JOUR A1 - Schwettmann, K. A1 - Nytus, N. A1 - Weigel, Sandra A1 - Radenberg, M. A1 - Stephan, D. T1 - Effects of rejuvenators on bitumen ageing during simulated cyclic reuse: A review JF - Resources, Conservation & Recycling N2 - Single reuse of asphalt is an approved practice, but its success highly depends on restoring the properties of the aged binder. Rejuvenators have become increasingly important for softening the binder because they make it possible to increase the amount of reclaimed asphalt pavement (RAP) while reducing the dependence on virgin bitumen. The vital questions to be investigated are how the rejuvenators affect the ageing properties of bitumen and if rejuvenators offer the possibility of cyclic bitumen reuse. The main objective of this publication is to present the current state of the art regarding the effects of rejuvenators on bitumen ageing. The results of laboratory life cycle simulations indicate that repetitive ageing and rejuvenation processes are possible, but reuse mainly depends on the rejuvenator type and its interaction with the respective bitumen sample. There are rejuvenators that have good rejuvenating properties but accelerate subsequent ageing, which is essential to consider when evaluating a rejuvenator. Bitumen rejuvenated with petroleum-based products, such as aromatic extracts, performs slightly better after subsequent ageing than when rejuvenated with bio-based products. As there are a limited number of studies simulating cyclic bitumen reuse, more studies are necessary to evaluate the general limits of bitumen reuse. KW - Bitumen KW - Asphalt KW - Ageing KW - Rejuvenator KW - Recycling KW - Cyclic reuse KW - Multiple reuse PY - 2023 DO - https://doi.org/10.1016/j.resconrec.2022.106776 SN - 0921-3449 VL - 190 SP - 1 EP - 14 PB - Elsevier B.V. AN - OPUS4-56963 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -