Modified sulfur bitumen binders for bitumen-mineral compositions

The properties of modified sulfur bitumen binders based on viscous petroleum bitumen, industrial sulfur and polymeric petroleum resin were studied. In selecting the compositions of the modified sulfur bitumen binders, the experiment planning method was used. Mathematical models showing the influence of sulfur and polymeric petroleum resin dosages on the modified sulfur bitumen binders properties were obtained. The regression equations make it possible to predict the properties and to optimize the binders compositions according to the operating conditions. Modified sulfur bitumen binders in comparison with the properties of the initial viscous road bitumen and sulfur bitumen binders are characterized by the relatively high indicators of thermal resistance, crack toughness, ductility, strain capacity and adhesion.