Effect of using dispersants during the mixing of aggregates with polymer-modified asphalts: A case study for Novophalt

The present work explores the use of dispersants in lowering the viscosity of asphalt mastics. The study includes the use of three different types of dispersants during the mixing of fine aggregates with one specific type of polymer-modified asphalt, namely, Novophalt that has been selected for a ca se study. The effect of the dispersants on the selection of the mixing temp erature is elucidated. A distinction is made between a lubricant and a disp ersant by observing the rheological behavior of the aggregate-asphalt syste ms under different conditions. It is also shown that stearic acid which act s more like a lubricant has the potential to lower compaction temperatures during the paving of roads.