Islam, S. S., Ghosh, A., Ransinchung, G. D. R. N., & Ravindranath, S. S. (2025). Impact of SBS structure on modified binder morphology during PAV ageing. In L. Eberhardsteiner, B. Hofko, & R. Blab (Eds.), Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria (pp. 222–225). TU Wien, E230-03 Road Engineering. https://doi.org/10.34726/10588
Advances in Materials and Pavement Performance Prediction IV : Contributions to the 4th International Conference on Advances in Materials and Pavement Performance Prediction (AM3P 2025), 7-9 May 2025, Vienna, Austria
This research investigates the impact of SBS copolymer molecular structure and vinyl content on the morphological behavior of modified binders during PAV ageing. Four SBS copolymers—linear (L-SBS), high vinyl (HV-SBS), radial (B-SBS), and di-block (DB-SB)—were used to formulate polymer-modified bind-ers (PMBs). The binders' morphology was analyzed before and after PAV ageing using Atomic Force Micros-copy (AFM) and Fluorescent Microscopy (FM). AFM results showed a significant increase in bee phase per-centage for L-SBS (30%) and B-SBS (19%) binders post-ageing, whereas HV-SBS and DB-SB showed smaller increases. FM indicated polymer network fragmentation in L-SBS and B-SBS due to polybutadiene dissolution. The study concludes that binders with lower vinyl content are more susceptible to degradation than those with higher vinyl content.
en
Research Areas:
Modeling and Simulation: 35% Structure-Property Relationsship: 30% Computational System Design: 35%
CC BY 4.0
