| 摘要: |
| 为了研究废机油作为再生剂的可行性以及不同再生剂对老化SBS改性沥青的再生效果，通过常规性能试验、动态剪切流变（DSR）试验对SBS改性沥青再生后的性能进行评价，采用原子力显微镜（AFM）、傅里叶红外光谱（FTIR）及热重分析（TG）研究了SBS改性沥青的再生机理.结果表明：XT-1再生剂和废机油对老化SBS改性沥青的针入度、软化点、延度均有较好的恢复效果；XT-1再生剂可以提高再生沥青的低温抗裂性能；废机油对老化SBS改性沥青疲劳寿命的影响更为明显；废机油对再生沥青黏弹性能有更好的恢复效果，可以改善老化作用对SBS改性剂的降解；XT-1再生剂和废机油的加入都调节了SBS老化沥青中的组分，改善了其路用性能，但并未发生化学反应. |
| 关键词: SBS改性沥青 废机油 再生机理 |
| DOI：10.3969/j.issn.1007-9629.2022.02.008 |
| 分类号:U414 |
| 基金项目:国家自然科学基金资助项目（51568054）；内蒙古自治区高等学校“青年科技英才计划”（NJYT-19-A19） |
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| Performance and Mechanism of Waste Oil Recycled SBS Modified Asphalt |
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CUI Yanan1,2, CUI Shuyu1,2, GUO Lidian3
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1.School of Civil Engineering, Inner Mongolia University of Technology, Hohhot 010051, China;2.Key Laboratory of Civil Engineering Structure and Mechanics of Inner Mongolia Autonomous Region, Inner Mongolia University of Technology, Hohhot 010051, China;3.Inner Mongolia Electric Power (Group) Co., Ltd., Ordos 010300, China
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| Abstract: |
| To explore the feasibility of using waste oil as a regenerating agent， the regeneration effect of different regenerating agents on aged SBS modified asphalt was studied. Firstly， the performance of SBS modified asphalt after regeneration was evaluated through conventional performance experiment and dynamic shear rheology （DSR） experiment. Then， the regeneration mechanism of SBS modified asphalt was studied through atomic force microscope （AFM）， Fourier infrared spectroscopy （FTIR） and thermogravimetric （TG）. The results show that XT-1 regenerant and waste oil can recover the pentration， softening point and ductility of the aged SBS modified asphalt well. XT-1 regenerant can improve the low-temperature crack resistance of recycled asphalt. Waste oil has more obvious influence on the fatigue life of aged SBS modified asphalt and has a better recovery effect on the viscoelasticity of recycled asphalt， which can improve the degradation of SBS modifiers by aging. The addition of XT-1 regenerant and waste oil both adjuste the components of the aged asphalt and improve its road performance， and no chemical reaction occurres. |
| Key words: SBS modified asphalt waste oil regeneration mechanism |
