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材料导报  2019, Vol. 33 Issue (6): 986-990    https://doi.org/10.11896/cldb.201906014
  无机非金属及其复合材料 |
表面活性剂对温拌胶粉改性沥青高低温性能的影响
王岚1, 李冀1, 桂婉妹2
1 内蒙古工业大学土木工程学院,呼和浩特 010051
2 东北大学资源与土木工程学院,沈阳 110000
Effect of Surfactant on High- and Low-temperature Performances of Warm-mixed Crumb Rubber Modified Asphalt
WANG Lan1, LI Ji1, GUI Wanmei2
1 School of Civil Engineering, Inner Mongolia University of Technology,Huhhot 010051
2 School of Resources and Civil Engineering, Northeastern University, Shenyang 110000
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摘要 为了研究表面活性剂(SYDK)对胶粉改性沥青(CR)高低温流变性能的影响,对添加不同SYDK掺量(0.4%,0.6%,0.8%)的60目胶粉改性沥青和混合目胶粉改性沥青进行动态剪切流变实验(DSR)和小梁弯曲蠕变劲度实验(BBR)。结果表明:SYDK的添加改善了胶粉改性沥青的高温性能,对混合目胶粉改性沥青高温性能的改善更显著,且SYDK掺量为0.6%的混合目胶粉改性沥青高温性能最佳。添加SYDK后,60目胶粉改性沥青应力松弛能力有所提高,低温性能有所改善,而混合目胶粉改性沥青的低温抗裂性变差,其中0.6%的SYDK掺量对其低温性能影响最小。综合考虑高低温性能指标,建议表面活性剂SYDK掺量选择0.6%。
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王岚
李冀
桂婉妹
关键词:  表面活性剂  温拌胶粉改性沥青  高温性能  低温性能    
Abstract: The purpose of this study is to reveal the effect of surfactant (SYDK-type) on the high- and low-temperature properties of crumb rubber modified asphalt (CR). We prepared two series of samples of 60-mesh and mixed-mesh crumb rubber modified asphalt, both of which have va-rious surfactant contents (0.4%, 0.6%, 0.8%), and conducted dynamic shear rheological test (DSR) and bending creep test (BBR). The results showed that the addition of SYDK surfactant improves the high-temperature performance of both 60-mesh and mixed-mesh crumb rubber modified asphalt samples, in which the latter achieve greater performance improvements and the mixed-mesh crumb rubber modified asphalt sample with an SYDK content of 0.6% exhibits the most satisfactory high-temperature performance. For the low temperature performance, the addition of SYDK surfactant benefits the stress relaxation ability of 60mesh-crumb rubber modified asphalt, but nevertheless makes the mixed-mesh crumb rubber modified asphalt prone to crack at lower temperatures. In particular, this negative effect gets minimized when the content of SYDK is 0.6%. According to our research, by weighing the changes in both high- and low-temperature performances, the optimum dosage of surfactant SYDK for warm-mixed crumb rubber modified asphalt is suggested to be 0.6%.
Key words:  surfactant    warm-mixed crumb rubber modified asphalt    high-temperature performance    low-temperature performance
               出版日期:  2019-03-25      发布日期:  2019-04-03
ZTFLH:  U414  
基金资助: 国家自然科学基金(11762012);内蒙古交通科技项目(NJ-2015-1)
作者简介:  王岚,内蒙古工业大学教授,现任土木工程学院院长,博士生导师
引用本文:    
王岚, 李冀, 桂婉妹. 表面活性剂对温拌胶粉改性沥青高低温性能的影响[J]. 材料导报, 2019, 33(6): 986-990.
WANG Lan, LI Ji, GUI Wanmei. Effect of Surfactant on High- and Low-temperature Performances of Warm-mixed Crumb Rubber Modified Asphalt. Materials Reports, 2019, 33(6): 986-990.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.201906014  或          http://www.mater-rep.com/CN/Y2019/V33/I6/986
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