Long-term Aging Properties of Bitumen With Expanded Vermiculite and Different Inorganic Nanoparticles

被引：8
|
作者：
Zhang, H. L. [1 ]
Ke, N. X. [1 ]
Zhu, C. Z. [1 ]
机构：
[1] Hunan Univ, Coll Civil Engn, Changsha 410082, Hunan, Peoples R China
来源：
PETROLEUM SCIENCE AND TECHNOLOGY | 2015年 / 33卷 / 17-18期
基金：
中国国家自然科学基金;
关键词：
bitumen; expanded vermiculite; nano-silica; nano-titanium dioxide; nano-zinc oxide; long-term aging;
D O I：
10.1080/10916466.2015.1070177
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The authors evaluate a novel bitumen modification by using the expanded vermiculite (EVMt) and three inorganic nanoparticles. The effect of EVMt and inorganic nanoparticles on physical and long-term aging properties of bitumen was investigated. The results show that the physical properties of bitumen are slightly influenced by with the introduction of nanomaterials. As a result of pressurized aging vessel, ultraviolet (UV) radiation aging, the viscosity aging index of bitumen is decreased obviously by adding the nanomaterials. It indicates that nanomaterials can improve the thermal and UV aging resistance of bitumen simultaneously. Furthermore, this improvement depends on the inorganic nanoparticle types. Compared with nano-silica and nano-titanium dioxide modified bitumens, bitumen with 1% EVMt and 3% nano-zinc oxide shows the lower viscosity aging index values, indicating its good long-term aging resistance.
引用
收藏
页码：1557 / 1562
页数：6
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