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为了给紫外线较强地区的沥青路面推荐较优的抗紫外线添加剂,本文采用冻融劈裂试验、浸水Marshall试验和车辙试验,对比研究了丁苯橡胶SBR、炭黑和防老剂BLE三种抗紫外线添加剂,不同添加剂量作用下,其沥青混合料的各方面性能。研究结果表明:丁苯橡胶SBR抗紫外线添加剂,在添加剂量为2.0%时,其试件的抗水损害能力和高温性能最优。防老剂BLE抗紫外线添加剂,在添加剂量为1.5%时,其试件的TSR增长率达到最大,在添加剂量为2.0%时,其试件的残留稳定度达到最大值,并且动稳定度增长率达到最大。炭黑抗紫外线添加剂其试件所检测的三个指标,均随着炭黑添加剂量的增加而逐渐升高,其增长速率无明显变化。如果选择110号A级道路石油沥青作为路面材料,在夏季高温地区,建议选择添加剂量为2.0%的丁苯橡胶SBR或者防老剂BLE;在冬季结冰地区,建议选择添加剂量为1.5%的防老剂BLE。综合考虑,抗紫外线添加剂的性能依次为:丁苯橡胶SBR>防老剂BLE>炭黑。
In order to recommend better anti-UV additives to the asphalt pavement with high UV, the freeze-thaw splitting test, the Marshall immersion test and the rutting test were compared in this paper. The SBR, carbon black and BLE anti-UV Additives, the role of different additives, the asphalt mixture of all aspects of performance. The results show that SBR anti-UV additive of styrene-butadiene rubber has the best anti-water damage ability and high-temperature performance when the dosage is 2.0%. Antioxidant BLE UV additives, when the additive dose of 1.5%, the TSR growth rate of the specimen to reach the maximum, the additive dose of 2.0%, the specimen’s residual stability reaches a maximum, and the dynamic growth rate to reach maximum. Carbon black anti-UV additives tested specimens of the three indicators, with the increase of carbon black additive dose and gradually increased, the growth rate of no significant change. If 110 A grade asphalt pavement is selected as pavement material, it is recommended to choose SBR SBR or BLE which is added 2.0% in high temperature in summer. In the freezing area in winter, it is recommended to choose 1.5% BLE. Taken together, the performance of anti-UV additives were: SBR SBR> BLE antioxidant> carbon black.