Nugraha Wahyu Pratama et al. 2025. Impact of Surfactants on the Performance of Plastic Modified Bitumen: A Study on Ductility, Penetration, and Softening Point. Jurnal Sains Materi Indonesia. 27, 1 (Aug. 2025), 60–70. DOI:https://doi.org/10.55981/jsmi.2025.11263.