Low-temperature properties of bituminous nanocomposites for road applications

This paper focuses on low-temperature performance of bituminous nanocomposites for road paving applications. In the experimental investigation, one type of carbon nanotubes and two types of nanoclays were combined with three base bitumens at various dosages by following a protocol based on the use of shear mixing and sonication. All rheological measurements were carried out by means of a Bending Beam Rheometer at temperatures comprised between −6 and −24 °C. Results, which were interpreted by combining different analysis models, showed that the effectiveness of nano-modification is strictly influenced by the combination of base binder, additive type and dosage.