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纳米材料改性沥青路用结合料的性能
作者:孙璐1 2 辛宪涛1 王鸿遥3 顾文钧1 
单位:1. 东南大学交通学院 南京 210096 2. Department of Civil Engineering  The Catholic University of America  
关键词:路面 改性沥青 纳米材料 
分类号:U416.217
出版年,卷(期):页码:2012,40(8):1095-1101
DOI:
摘要:

  要:选择不同形状和尺寸的纳米有机膨润土、纳米SiO2及苯乙烯丁二烯共聚物(SBS)为改性剂,研究其对基质沥青的改性作用。针对各改性剂不同的结构属性确定了相应的改性沥青制备工艺。通过针入度、软化点、延度和Brookfield黏度等路用性能常规指标以及车辙因子、零剪切黏度、弯曲蠕变劲度等非常规试验指标评价了纳米层状硅酸盐改性沥青和复合材料改性沥青的路用性能。结果表明这些纳米材料改性沥青的路用性能得到了显著改善。

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Abstract: The anomaterial organobentonite, nano-SiO2 and SBS at different dimensions and scales were used to modify base asphalt material. The processing methods of modified asphalt were applied according to the structural properties of different modifier. The general performance and unconventional performance indicators were used to assess the performance of modification. The general indicators contain penetration, softening point, ductility and brookfield viscosity as well. The unconventional indicators contain rutting factor, zero shear viscosity and flexural creep stiffness as well. The results show that the nanomaterial as modifiers can improve significantly the performance of asphalt binder as paving materials.

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基金项目:
交通部西部项目(0901005C);美国国家科学基金(CMMI–064- 4552);江苏省自然科学基金重点项目(SBK200910046);山西省交通厅科技项目(7921000015);山东省交通厅科技项目(2009Y08)资助。
作者简介:
第一作者:孙 璐(1972—),男,博士,教授。
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