POLYMERIC MIXTURES AS MODIFIERS FOR THE RHEOLOGICAL PROPERTIES OF PAVING ASPHALT

Due to the significant impact on enhancing the rheological properties of asphalt, many researchers were eager to enhance the specifications of asphalt by employing different additives, particularly polymeric additives. This is attributed to their significant impact on enhancing the rheological properties of asphalt that make it more suitable for a variety of uses, particularly in the process of paving. In this research, ethylene vinyl acetate (EVA) and Noflake were combined in a polymeric mixture to modify the material of asphalt. Different weights of mix polymers were utilized in the aforementioned polymer combination. At a constant temperature of 150 °C for 60 minutes, the polymeric mixture (EVA with Noflake) was added to the asphalt in different weight percentages while anhydrous aluminum chloride was present as a catalyst. The findings showed that the amended asphalt's qualities had clearly changed. Overall, there was a possibility of benefiting from Noflake material in the rheological modification of asphalt by using it as a mixture with EVA in the modification of asphalt. Noflake alone failed in the rheological modification, and at the same time, gave good results when used as a mixture with EVA. It was concluded that several measurements were made on the samples whose physical and chemical properties have been modified, as well as on the original asphalt, which were represented by measuring the ductility, penetration, softening point, and percentage of the separated asphalt.