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以典型的AC-13沥青混合料为基础,以动稳定度为评定指标,研究了辐射强度、辐射时长、沥青类型、油石比等因素对紫外光老化沥青混合料高温性能的影响,分析总结了各影响因素对紫外光老化沥青混合料高温性能的影响规律。结果表明:沥青混合料的动稳定度随紫外光老化时长的增加而逐渐减小,并最终趋于稳定;与基质沥青混合料相比,改性沥青混合料具有更优良的抗紫外光老化性能;对不同标号的基质沥青,高标号沥青混合料的动稳定度受紫外光老化的影响更大;适当增大油石比后其动稳定度减小;适当减小油石比后其动稳定度增大。
Based on the typical AC-13 asphalt mixture, the dynamic stability was taken as the evaluation index to study the influence of the radiation intensity, radiation duration, asphalt type and ratio of oil to rock on the high temperature performance of UV aging asphalt mixture. Influence of Various Factors on High Temperature Performance of Ultraviolet Burnishing Asphalt Mixture. The results show that the dynamic stability of asphalt mixture decreases with the increase of UV aging time, and finally tends to be stable. Compared with matrix asphalt mixture, the modified asphalt mixture has better UV aging resistance The dynamic stability of high-grade bituminous mixture is more affected by ultraviolet light aging for different grades of matrix asphalt. The dynamic stability of the asphalt with high-grade asphalt mixture is more affected by ultraviolet light aging. The dynamic stability of the high- Big.