【摘要】 针对SBS改性沥青拌合压实温度高，能耗大易老化的问题，以裂解的活化胶粉为基质制备一种环保型温拌剂.为探究裂解橡胶作为基质制备的温拌剂对SBS改性沥青流变性能的影响规律，对不同掺量裂解橡胶温拌SBS改性沥青的高低温流变特性进行了系统的研究.结果表明：裂解橡胶对沥青的高温抗车辙性能有轻微负面影响，在7%掺量时高温抗车辙性能与原改性沥青相近.当掺量为5%时，改性沥青具有较好的高温储存稳定性以及低温抗裂性能，掺量为3%～5%时，改性沥青的疲劳性能最优.综合考虑下，裂解橡胶掺量在5%～7%时最佳，此时改性沥青可同时兼顾较好的高低温流变性能以及疲劳特性.更多还原

【Abstract】 To address the issues of high temperature requirements excessive energy consumption of SBS-modified asphalt during mixing and compaction processes, an environmentally friendly warm-mix additive was developed using pyrolyzed activated rubber powder as the base material. In order to investigate the influence of the warm-mix additive on the rheological properties of SBS-modified asphalt, a systematic experimental study was conducted on the high and low-temperature rheological properties of SBS-modified asphalt with different dosages of pyrolyzed rubber. The results indicated that pyrolyzed rubber has a slight negative effect on the high-temperature rutting resistance of asphalt, with the rutting resistance being comparable to that of the original modified asphalt at 7% dosage. When the dosage is 5%, the modified asphalt has better high-temperature storage stability and low-temperature cracking resistance, and the fatigue performance of the modified asphalt is optimal when the dosage is 3%～5%. Under comprehensive consideration, the optimal dosage of pyrolyzed rubber is between 5% and 7%, at which the modified asphalt can simultaneously achieve good high and low-temperature rheological properties as well as fatigue characteristics.更多还原