Effects of aging on the properties of modified asphalt binder with flame retardants

被引：39

作者：

Cong, Peiliang ^{[1
,2
]}

Chen, Shuanfa ^{[1
]}

Yu, Jianying ^{[2
]}

Wu, Shaopeng ^{[2
]}

机构：

[1] Changan Univ, Minist Educ, Engn Res Ctr Transportat Mat, Xian 710064, Peoples R China

[2] Wuhan Univ Technol, Minist Educ, Key Lab Silicate Mat Sci & Engn, Wuhan 430070, Peoples R China

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2010年 / 24卷 / 12期

关键词：

Asphalt; Aging; Flame retardancy; Rheological property; MIXTURES;

D O I：

10.1016/j.conbuildmat.2010.05.022

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Effects of aging on the properties of asphalt binders modified by incorporating Styrene-Butadiene-Styrene (SBS) and flame retardants (FR) were studied. Asphalt binders were artificially aged in the rolling thin film oven (RTFOT) and Pressure Aging Vessel (PAV). The flame retardancy of modified asphalt binders were characterized using limited oxygen index (LOI), and the effects of aging on the properties of asphalt binders were studied using Brookfield viscometer test and dynamic shear rheometer test. Experimental results indicated that the flame retardancy of asphalt binder was increased after aging. But the increasing amount of LOI is low when the modified asphalt binder containing more flame retardants. The variation of the LOI, softening point, penetration, ductility and viscosity of asphalt binder decreased with flame retardant content increasing, meaning the flame retardants can improve the thermo-oxidative aging resistance of asphalt binder. Furthermore, the G'/sin delta, stiffness and m-value of flame retardant modified asphalt binders display smaller changes after two different aging. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：2554 / 2558

页数：5

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