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材料导报  2024, Vol. 38 Issue (13): 22120076-9    https://doi.org/10.11896/cldb.22120076
  无机非金属及其复合材料 |
不同温拌剂对高黏沥青老化性能的影响
罗婷1,2, 王嘉昕1,2, 谢斌1,2, 艾长发1,2, 颜川奇1,2,*
1 西南交通大学土木工程学院,成都 610031
2 道路工程四川省重点实验室,成都 610031
Effect of Different Warm Mixes on the Aging Performance of High Viscosity Asphalt
LUO Ting1,2, WANG Jiaxin1,2, XIE Bin1,2, AI Changfa1,2, YAN Chuanqi1,2,*
1 School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China
2 Highway Engineering Key Laboratory of Sichuan Province, Chengdu 610031, China
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摘要 为研究不同温拌剂对高黏沥青老化性能的影响,以不同温拌剂对高黏沥青压实温度降幅10℃左右为标准,确定不同温拌剂掺量,并按规范要求进行短期、长期老化,再通过温度扫描、蠕变恢复试验、线性振幅扫描试验研究不同温拌剂对高黏沥青老化后黏弹性、蠕变恢复性能等流变性能的影响,并结合红外光谱、荧光显微试验进行机理分析。研究表明,温拌剂Evotherm及Waste-Cooking-Oil(WCO)因热稳定性较差,在短期老化阶段就被氧化分解,二者对高黏沥青老化性能的影响主要集中在短期老化阶段,长期老化阶段它们对高黏沥青性能基本无影响。在短期老化阶段温拌剂Evotherm及WCO的加入能够增强高黏沥青流动性能,使高黏沥青老化程度加深,沥青蠕变恢复能力、抗疲劳性能均下降。温拌剂Sasobit因其抗老化性能较优,在老化后仍存在于沥青中,可使沥青蠕变恢复性能有较大提升,从而使得沥青在小应变情况下抗疲劳性能增强,同时荧光显微显示温拌剂Sasobit在常温下能够与均匀分布在沥青中的苯乙烯-丁二烯嵌段共聚物(Styreneic-block-copolymer,SBS)颗粒相互联结,形成网状晶格结构,使高黏沥青具有更强的高温稳定性。
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罗婷
王嘉昕
谢斌
艾长发
颜川奇
关键词:  温拌剂  老化性能  荧光显微  黏弹性    
Abstract: To examine the effect of different warm mixes on the aging performance of high viscosity asphalt, the compaction temperature drop of approximately 10 ℃ for different warm mixes on high viscosity asphalt was used as a standard to determine the amount of different warm mixes required. According to the specification requirements for short-term and long-term aging, and then through the temperature sweep, creep recovery test, LAS test to study the effect of different warm mixes on the aging of high viscosity asphalt viscoelasticity, creep recovery performance and other rheological properties, and the study was combined with infrared spectroscopy and fluorescence microscopy tests to analyze the mechanism. The study showed that the warm mixes Evotherm and Waste-Cooking-Oil (WCO) were oxidized and decomposed in the short-term aging stage due to their poor thermal stability, so the effect of these two on the aging performance of high-viscosity asphalt was mainly concentrated in the short-term aging stage, while the long-term aging stage had no effect on the performance of high-viscosity asphalt. In the short-term aging stage, the addition of warm mix Evotherm and WCO can enhance the mobility of high viscous asphalt, so that the high viscous asphalt aging degree deepened, asphalt creep recovery ability, fatigue resistance are reduced. The warm mix agent Sasobit is still present in the asphalt after aging due to its better anti-aging properties, which has a greater improvement on the asphalt creep recovery performance and makes the asphalt fatigue resistance increase under small strains, while fluorescence microscopy shows that the warm mix agent Sasobit can associate with the SBS particles uniformly distributed in the asphalt at room temperature to form a mesh lattice structure, which makes the high viscosity asphalt have stronger High temperature stability.
Key words:  warm mixes    aging performance    FM    viscoelasticity
出版日期:  2024-07-10      发布日期:  2024-08-01
ZTFLH:  U414.1  
基金资助: 国家自然科学基金(52008353;51908426);中国博士后科学基金(BX20190240;2019M660097);四川省青年科技创新研究团队(2021JDTD0023;2022JDTD0015);成都科技创新研发项目(2021-YF05-01175-SN)
通讯作者:  *颜川奇,西南交通大学副教授、硕士研究生导师。主要从事高性能改性沥青材料表征与研发方面的研究,以第一作者或通信作者身份发表SCI收录论文20余篇。Ycq@swjtu.edu.cn   
作者简介:  罗婷,西南交通大学硕士研究生,主要从事沥青路面材料方面的研究。
引用本文:    
罗婷, 王嘉昕, 谢斌, 艾长发, 颜川奇. 不同温拌剂对高黏沥青老化性能的影响[J]. 材料导报, 2024, 38(13): 22120076-9.
LUO Ting, WANG Jiaxin, XIE Bin, AI Changfa, YAN Chuanqi. Effect of Different Warm Mixes on the Aging Performance of High Viscosity Asphalt. Materials Reports, 2024, 38(13): 22120076-9.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22120076  或          http://www.mater-rep.com/CN/Y2024/V38/I13/22120076
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