Influence of multi-dimensional nanomaterials on the aging behavior of bitumen and SBS modified bitumen

摘要

The influence of multi-dimensional nanomaterials on the aging behavior of bitumen and styrene-butadiene-styrene copolymer (SBS) modified bitumen was compared. The laboratory aging methods included thin film oven test, pressure aging vessel and accelerated ultraviolet aging. The results showed that the deterioration of physical and rheological performances of two types of bitumens during thermal oxidation and photo oxidation aging could be slowed down by adding multi-dimensional nanomaterials effectively. In contrast with base bitumen, multi-dimensional nanomaterials had a better improvement on anti-aging ability of SBS modified bitumen. Fourier transform infrared spectroscopy test result manifested that multi-dimensional nanomaterials could retard the degradation of SBS modifiers during the aging process.