Modification of road bitumens with thermoplastic polymers

摘要: Polymer modified bitumens were prepared by blending with different thermoplastic polymers (SBS, SEBS, EVA and EBA). The fundamental properties (e.g. morphology, rheology ageing) of the binders studied using fluorescence microscopy, dynamic mechanical analysis, creep test (bending beam rheometer), gel permeation chromatography. results indicated that morphology rheological influenced characteristics content polymer nature bitumen. When a continuous phase was formed at sufficiently high (about 6%), improved significantly. At given content, containing SBS SEBS differ widely from those EBA in their behavior. ageing also strongly dependent on types polymer. In most cases, changes during related to oxidation bitumen and/or degradation addition, effect testing condition temperature) dependent.