In the quest to enhance the longevity and performance of asphalt pavements, a recent study published in *Frontiers in Built Environment* (translated as *Frontiers in the Built Environment*) has shed light on the compatibility of Buton rock asphalt (BRA) with various petroleum asphalts and its impact on ultraviolet (UV) aging behavior. Led by Chaoyue Rao from the Changsha University of Science and Technology, this research could have significant implications for the energy sector and pavement construction.
The study, which evaluated the compatibility of BRA with four different base asphalts, found that Maoming Petrochemical 70# (70-A) exhibited the best compatibility with BRA. The modified asphalt (70-A-MA) demonstrated a softening point increase of 11.0% and moderate viscosity growth, indicating superior storage stability. “The type of base asphalt is a key factor influencing its compatibility with BRA,” Rao explained. “Modified asphalt with superior compatibility exhibits better chemical stability and less severe aging damage.”
The research employed a multi-scale approach to simulate and analyze UV aging behavior. Using techniques such as dynamic shear rheometer (DSR) measurements, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), and gel permeation chromatography (GPC), the team was able to assess the aging resistance of the modified asphalts. The results showed that 70-A-MA maintained lower surface crack density and had significantly lower growth rates of carbonyl and sulfoxide indices compared to Panjin 90# (90-D-MA).
“This study provides scientific guidance for the selection of base asphalt in BRA modification applications,” Rao noted. The findings suggest that choosing the right base asphalt can enhance the performance and durability of asphalt pavements, which is crucial for the energy sector as it seeks to optimize resources and reduce maintenance costs.
The implications of this research extend beyond immediate applications. As the energy sector continues to innovate, understanding the compatibility of different asphalts and their aging behavior under UV radiation can lead to more efficient and sustainable pavement solutions. This could pave the way for advancements in road construction, particularly in regions with extreme environmental conditions.
In summary, the study by Rao and his team highlights the importance of compatibility in asphalt modification and offers valuable insights for the energy sector. As the industry continues to evolve, such research will be instrumental in shaping future developments and ensuring the longevity of infrastructure.