Research progress on the durability of SBS-modified asphalt binder exposed to the plateau climate
This paper reviews the damage mechanism of SBS-modified asphalt binder under typical plateau climate conditions(freeze-thaw,salt erosion,intense ultraviolet radiation,and their coupling effects),and discusses the means to improve the durability of SBS modified asphalt under special plateau climate con-ditions.The results show that the durability of SBS-modified binder asphalt is higher than that of base as-phalt,but the durability of SBS modified asphalt in high-altitude plateau areas still needs to be improved.Through a summary of existing research,it is found that the application of POE(polyolefin elastomer)and CR(crumb rubber)can improve its durability,and enhance its suitability for use in high-altitude plateau areas.
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