Development and properties of new nanomodifiers for road pavement

Abstract

The structure and properties of active powder of discretely devulcanized rubber (APDDR) produced by the technique of high-temperature shear-induced grinding in rotary dispergators is studied. The morphology of APDDR particles, including such particles after mixing with hot bitumen, is examined by electron and atomic force microscopy. Rheological tests of rubber-modified bitumens demonstrate the efficiency of APDDR particles as an efficient modifier of bitumen binders and asphalt concrete pavements intended for service in different climatic zones under extreme loadings. The data are confirmed by field tests of modified asphalt concretes.