Effect of aging on the properties of road asphalt binders containing thermoplastic and rubber crumb obtained by high-temperature shear-induced grinding

Abstract

The influence of the aging process on the properties of asphalt binders modified with active powder of discretely devulcanized rubber (APDDR) obtained in rotor dispersers by using the technique of high-temperature shearinduced grinding (HTSG), and other types of modifier. Comprehensive study of asphalt binders according to American Standard Super Pave showed that the use of APDDR can significantly improve not only the level of performance characteristics of asphalt concrete pavement, but the aging resistance of the material during manufacture asphalt mix that is caused as a dry way of introducing this type of modifier and its complex physicochemical properties. Conducted on Dynamic Shear Rheometer test bitumen modified crumb rubber by HTSG showed applicability APDDR particles as an effective modifier asphalt binders and asphalt coatings, designed to work in different climatic zones with the highest loads.

Keywords

• high-temperature shear-induced grinding, rotor disperser, active powder of discretely devulcanized rubber, bitumen, binder, modifier, asphalt concrete.