| 微藻油改性沥青耐老化性能研究 |
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| 引用本文： | 殷卫永,任刚,王笑风,韩战涛,任文博,李佳佳.微藻油改性沥青耐老化性能研究[J].硅酸盐通报,2022,41(5):1838-1845. |
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| 作者姓名： | 殷卫永 任刚 王笑风 韩战涛 任文博 李佳佳 |
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| 作者单位： | 1.交通运输行业公路建设与养护技术、材料及装备研发中心,郑州 450000; 2.河南省交通规划设计研究院股份有限公司,郑州 450000; 3.河南省固废材料道路工程循环利用重点实验室,郑州 450000; 4.中国建筑第七工程局有限公司,郑州 450000; 5.郑州大学土木工程学院,郑州 450000 |
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| 基金项目： | 交通运输部科技示范项目(2020-06);中原千人计划-中原科技创新领军人才项目(204200510004);中建七局科技研发计划(CSCEC7b-2020-Z-2) |
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| 摘 要： | 为缓解石油沥青短缺局势,探索微藻油用于沥青改性可行性及改性沥青长期性能,将微藻液经降解、离心、萃取得到微藻油并制备改性沥青。通过不同微藻油掺量下改性沥青延度、软化点和黏度确定微藻油最佳掺量,通过高低温流变试验、混合料路用性能试验分析微藻油改性沥青经旋转薄膜烘箱(RTFOT)短期老化、压力老化容器(PAV)长期老化和紫外老化后性能变化并与SBS改性沥青对比,借助红外光谱分析微藻油改性沥青分子结构组成。结果表明:微藻油掺量为30%(外掺质量分数)时,改性沥青延度达到最大值,软化点和黏度满足改性沥青要求;微藻油改性沥青和苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)改性沥青经RTFOT短期老化后性能差异不显著,微藻油改性沥青耐PAV长期老化和耐紫外老化性能优于SBS改性沥青,尤其是耐紫外老化性能更优。红外分析表明两种改性沥青均含有乙烯基双键、芳香族C—H、甲基和亚甲基等类似成分,但芳香族C—H、伸缩C—C成分含量存在差异。微藻油改性沥青比SBS改性沥青增加的酰胺不饱和基团和羧基利于改性沥青形成网络分子结构。
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| 关 键 词： | 道路材料 微藻油 改性沥青 老化 流变 路用性能 红外光谱 |
| 收稿时间： | 2021-12-20 |
Research on Aging Resistance of Microalgae Oil Modified Asphalt |
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| YIN Weiyong,REN Gang,WANG Xiaofeng,HAN Zhantao,REN Wenbo,LI Jiajia.Research on Aging Resistance of Microalgae Oil Modified Asphalt[J].Bulletin of the Chinese Ceramic Society,2022,41(5):1838-1845. |
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| Authors: | YIN Weiyong REN Gang WANG Xiaofeng HAN Zhantao REN Wenbo LI Jiajia |
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| Abstract: | To alleviate the shortage of petroleum asphalt and explore the feasibility of microalgae oil for asphalt modification and the long-term performance of modified asphalt, microalgae oil was obtained by degradation, centrifugation and extraction, and modified asphalt was prepared. The content of microalgae oil was determined by testing the ductility, softening point and viscosity of modified asphalt under different microalgae oil content. Through high and low temperature rheological test and mixture road performance test, the performance changes of microalgae oil modified asphalt after rolling thin film oven test (RTFOT) short-term aging, pressurized aging vessel (PAV) long-term aging and UV aging were analyzed and compared with SBS modified asphalt. The molecular structure and composition of microalgae oil modified asphalt were analyzed by infrared spectroscopy. The results show that when the content of microalgae oil is 30% (mass fraction of admixture), the ductility of modified asphalt reaches the maximum, and the softening point and viscosity meet the requirements of modified asphalt. After RTFOT short-term aging, the performance difference between microalgae oil modified asphalt and SBS modified asphalt is not significant. The resistances of PAV long-term aging and UV aging of microalgae oil modified asphalt are better than SBS modified asphalt, especially UV aging resistance. Infrared analysis shows that the two modified asphalts contain similar components such as a vinyl double bond, aromatic C—H, methyl and methylene, but the contents of aromatic C—H and telescopic C—C are different. Compared with SBS modified asphalt, microalgae oil modified asphalt increases amide unsaturated group and carboxyl group, which is conducive to the formation of network molecular structure of modified asphalt. |
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| Keywords: | road material microalgae oil modified asphalt ageing rheology road performance infrared spectrum |
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