Tar-based polymer-bitumen binder for road construction

Abstract

The possibility of getting polymer-bitumen binders (PBB) based on straight-run tar (heavy resid) has been studied. It is shown that tar-based PBB composite is characterized by improved performance properties and reduced materials consumption for their production.Present-day road industry places high demands on all materials usable for construction of automobile roads. The current practice in the Russian Federation for getting polymer-bitumen binders (PBB) in asphalt and concrete plants (ACP) envisages use, based on the present standards, of oxidized road bitumen and solution of styrene-butadiene-styrene (SBS) modifiers in various plasticizers. Several flaws are intrinsic to this technology