Effect of Polymer Dispersion on the Rheology and Morphology of Polymer Modified Bituminous Blend

摘要: Increase in axle wheel load and traffic volume has led to the use of polymer modified bitumen (PMB) on roads as it offers better rutting, thermal fatigue performances. In this paper viscosity function PMB obtained at 135°C was studied context dispersion blend. Polypropylene (PP) used modifier for 80/100 pen bitumen. The morphological analysis using Scanning Electron Microscopy (SEM), Atomic force (AFM) Field Emission (FESEM) were presented. It found that although resin not fully digested by virgin bitumen, there evidence a significant alteration Newtonian behavior non-Newtonian addition polymer.Presence thixotropic blend can be considered benefical recovery stress related deformation. SEM examination PP revealed partial breakage periphery sufficient enhance significantly. AFM phase images up 2% concentration significantly enhances viscoelastic property final blend.The separated layer with stiffnesss also acts relaxant surface. Thus benefited incorporation induces potentialy offer cracking properties resulting mix.