Effect of ageing on bitumen chemistry and rheology

被引：573

作者：

Lu, XH ^{[1
]}

Isacsson, U ^{[1
]}

机构：

[1] Royal Inst Technol, Div Highway Engn, SE-10044 Stockholm, Sweden

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2002年 / 16卷 / 01期

关键词：

bitumens; ageing; chemical analysis; rheological characterisation;

D O I：

10.1016/S0950-0618(01)00033-2

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

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.

引用

页码：15 / 22

页数：8