Performance and Mechanism of High-Viscosity and High-Elasticity Bitumen (HVE-MB) Modified with Five Additives

In order to improve the viscoelasticity of bitumen, several modifiers were compounded with it, including SBS, reclaimed rubber powder, tackifier, plasticizer, and oil stabilizer, produce High-viscosity High-elastic Modified Bitumen (HVE-MB). The various physical rheological properties bitumen evaluated using a number factors, such as dynamic viscosity at 60 °C, elastic recovery, penetration, softening point, ductility, DSR. By comparing different types content it was found that original significantly improved by adding modifiers. comparison HVE-MB increased more than 110 times, recovery rate doubled, point ductility improved, penetration decreased. As SBS increased, improvement in became significant. workability satisfies requirement less 2.5 °C suitable dosage stabilizer. On other hand, can be adjusted based on specific requirements. It is sustainable economic way use powder technical performance bitumen.