“…If plastic is added with additional material, the resultant PMB viscosity tends to be above the 3 Pa.s limit, whereas if the plastic has been chemically modified, the resultant viscosity is usually below the 3 Pa.s limit. The combination of plastic and crumb rubber or SBS produces a PMB with a significant increase in the viscosity parameter, up to the point that 50% did not comply with the 3 Pa.s limit(Al-Abdul Farahani et al, 2017b;Yan et al, 2015;Yang and Cheng, 2016;Zhang and Hu, 2016). This significant increment in viscosity is generated by the internal interactions of the components, the high quantity of modifiers added to the bitumen, and the structural reinforcement created by the polymers(Al-Abdul .…”