Laboratory evaluation of antioxidants for asphalt binders

被引：140

作者：

Apeagyei, Alex K. ^{[1
]}

机构：

[1] Virginia Transportat Res Council, Charlottesville, VA 22903 USA

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2011年 / 25卷 / 01期

关键词：

Asphalt; Oxidative aging; Age-hardening; Antioxidants; Aging index;

D O I：

10.1016/j.conbuildmat.2010.06.058

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

A laboratory study was carried to investigate whether certain antioxidants could be used to reduce age-hardening in asphalt binders. Several additives including: Vitamin E, Irganox 1010, Irgafos P-EPQ carbon black, hydrated lime, and DLTDP/furfural, were evaluated. The modified asphalt binders were subjected to two accelerated oxidative aging regimes in the laboratory. Short-term oxidative aging of the binders was simulated using a rolling thin film oven while long-term aging was performed using a pressure aging vessel. The effects of aging on the binders were evaluated based on changes in rheological properties of asphalt binders undergoing oxidative aging. Binders modified with a combination of furfural and DLTDP was found to posses the lowest aging index. The antioxidant-treated binders exhibited improved performance at both high and low pavement temperatures. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：47 / 53

页数：7