| 摘要: |
| 采用自主研发的3种生物基稳定剂（A、B、C）制备了SBS改性沥青，在常规技术指标对比分析的基础上，以动态剪切流变（DSR）试验和弯曲梁流变（BBR）试验评价了沥青的高低温性能，以多应力重复蠕变（MSCR）试验评估了沥青的高温流变特性，并利用荧光显微试验分析了沥青的微观形态，同时进行了成本分析.结果表明：与商品硫磺稳定剂相比，生物基稳定剂能显著降低SBS改性沥青的135 ℃黏度，降幅达12.6%~25.8%；稳定剂A、C均具有改善沥青高温性能的优势，稳定剂A改善沥青低温性能略有优势；在改善高温流变性能方面，稳定剂A效果优异，稳定剂C与商品硫磺稳定剂各有优势，而稳定剂B效果不佳；稳定剂A可以促进SBS改性剂的分散；3种生物基稳定剂成本均与商品硫磺稳定剂相近. |
| 关键词: 生物基高分子稳定剂 SBS改性沥青 宏观性能 微观结构 |
| DOI：10.3969/j.issn.1007-9629.2021.06.028 |
| 分类号:U414.1 |
| 基金项目:山东省高等学校青创科技计划项目（2019KJG004）；山东省自然科学基金重点项目（ZR2020KE007） |
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| Effect of Bio-based Stabilizer to Technical Performance of SBS Modified Asphalt |
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GENG Litao1, LIU Yue1, HAN Hongchao2, ZHANG Zhe3, HAN Fangyan4
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1.School of Transportation Engineering， Shandong Jianzhu University， Jinan 250101， China;2.Shandong Expressway Co.， Ltd.， Jinan 250014， China;3.Qingdao Cascada Polymer Co.， Ltd.， Qingdao 266109， China;4.Dezhou Highway Development Center， Dezhou 253006， China
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| Abstract: |
| The SBS modified asphalt were prepared with three self-developed bio-based stabilizers （A，B，C）. The general technical properties of these asphalt were tested and compared. Then the high-temperature and low-temperature performances of asphalt were especially evaluated by the dynamic shear rheological（DSR） test and the bending beam rheological（BBR） test. Besides， the high-temperature rheological properties of asphalt were evaluated by the multiple stress creep recovery（MSCR） test， and the microscopic morphology of asphalt was analyzed by the fluorescence microscopy test. The cost of these bio-based stabilizers was also compared with that of traditional sulfur stabilizer. Results show that bio-based stabilizers can reduce the 135 ℃ viscosity of SBS modified asphalt by 12.6%-25.8% compared with commercial sulfur stabilizer； while stabilizer A and C can improve high-temperature performance and stabilizer A have a slight advantage in improving low-temperature performance. SBS modified asphalt prepared with stabilizer A has excellent high-temperature rheological properties and stabilizer C and sulfur stabilizer have their own advantages， while stabilizer B is not effective； stabilizer A can promote the dispersion of SBS in asphalt； the costs of bio-based stabilizers are similar to that of sulfur stabilizer. |
| Key words: bio-based polymer stabilizer SBS modified asphalt macro property micro structure |
