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研究了不同温度和紫外光照条件下的SBS改性沥青性能变化,分析了光热耦合条件对SBS改性沥青性能的影响。结果表明:热和紫外光照可以加速SBS改性沥青的老化,温度越高或紫外光强度越大,SBS改性沥青老化越严重。而且,热和紫外光对SBS改性沥青的老化具有耦合效应,但是,温度条件较低时,对SBS改性沥青老化的耦合效应较小,随着温度的升高,光热耦合效应对SBS改性沥青老化的影响增大;另外,随着紫外光强度的增大,对SBS改性沥青老化的影响越大。
The properties of SBS modified asphalt under different temperature and UV illumination conditions were studied. The influence of light and heat coupling conditions on the properties of SBS modified asphalt was analyzed. The results show that heat and ultraviolet light can accelerate the aging of SBS modified asphalt. The higher the temperature or the greater the intensity of ultraviolet light, the more serious the aging of SBS modified asphalt. Moreover, heat and ultraviolet light have a coupling effect on the aging of SBS modified asphalt. However, the coupling effect on the aging of SBS modified asphalt is small when the temperature is low, and as the temperature increases, The aging of modified asphalt increases; In addition, with the increase of UV intensity, the greater the impact on the aging of SBS modified asphalt.