The application of rubber powder in modified asphalt has garnered significant attention in the field of road engineering and materials science. This paper discusses the advantages and methods of pretreating rubber powder in the process of modified asphalt application, including thermal mechanical method, chemical method, microwave radiation method, supercritical fluid induction, and biological method. By breaking the sulfur cross-linking bonds of rubber powder, increasing its surface activity, improving its dispersibility and reactivity, rubber powder modified asphalt shows significant improvements in high-temperature stability, low-temperature crack resistance, storage stability, and anti-aging performance. Future research should focus on optimizing pretreatment technology, improving desulfurization efficiency, and enhancing economic and environmental benefits to fully leverage the potential of rubber powder modified asphalt.
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