Effect of ageing on bitumen chemistry and rheology
Effect of ageing on bitumen chemistry and rheology
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DOI：
10.1016/s0950-0618(01)00033-2
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发表时间：
2002-02-01
影响因子：
7.4
通讯作者：
Isacsson, U
中科院分区：
文献类型：
--
作者：
Lu, XH;Isacsson, U
研究了老化对沥青化学和流变学的影响。采用薄膜烘箱试验(TFOT)和滚动薄膜烘箱试验(RTFOT)对7种沥青进行了老化试验。用红外光谱、层析和动态力学分析对粘结剂进行了表征。考察了不同化学参数之间以及化学参数和流变学参数之间的统计相关性。并探讨了TFOT与RTFOT的关系。观察到老化对沥青的化学和流变学有很大影响。然而，化学和流变性的变化通常并不一致，因此，使用不同的评价方法时，沥青的老化敏感性可能会有不同的排名。无论测量的参数类型如何，TTOT和RTFOT之间存在很强的相关性，两种老化过程显示出相似的严重程度。(C)2002爱思唯尔科学有限公司。保留所有权利。
Effect of ageing on bitumen chemistry and rheology was studied. Seven bitumens were aged according to the thin film oven test (TFOT) and the rolling thin film oven test (RTFOT). The binders were characterised using infrared spectroscopy, chromatography and dynamic mechanical analysis. Statistical correlation between different chemical parameters, as well as between chemical and rheological parameters, was examined. The relationship between TFOT and RTFOT was also investigated. It was observed that ageing influenced bitumen chemistry and rheology significantly. However, chemical and rheological changes were generally not consistent, and consequently, ageing susceptibility of bitumens may be ranked differently when different evaluation methods are used. Regardless of the type of the parameters measured, a strong correlation was observed between TTOT and RTFOT, and the two ageing procedures show similar severity. (C) 2002 Elsevier Science Ltd. All rights reserved.