What process parameters influence crumb rubber modified bitumen pdf in asphalt or bitumen modification?

The key process parameters influencing crumb rubber modified bitumen (CRMB) include the rubber particle size, blending temperature, and mixing time. The rubber particle size affects the dispersion and interaction with the bitumen. Higher blending temperatures enhance the dissolution of rubber, while optimal mixing time ensures uniform distribution. Additionally, the ratio of crumb rubber to bitumen and the type of bitumen used also play significant roles in determining the performance characteristics of the modified asphalt.