抗紫外老化剂对沥青性能的影响.pdf

第10卷第5期
铁道科学与工程学报
Vol 10 No 5
2013年10月
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
Oct.2013
抗紫外老化剂对沥青性能的影响
韦慧,曾胜,李振存,赵健,郭所
(长沙理工大学交通运输工程学院,湖南长沙410076)
摘要:为解决南方湿热地区沥青路面受紫外光老化影响问题,利用紫外老化环境箱和动态剪切流变仪研究老化时间和受
阻胺类抗紫外老化荆(CW-944)对沥青高温动态力学性能、低温和疲劳性能的影响。试验结果表明:强紫外光降低了沥青
疲劳性能和低温性能,改善了抗车辙性能,且随老化时间延长而加剧;受風胺类抗紫外老化剂(GW-944)能较好地对SBS
改性沥青进行抗老化性能改善,且对其性能孜善存在合适的掺量范国,适宜掺量为0.5%,而对基质沥青性能改善并不适
用。研究成果为沥青路面有效防治紫外光老化提供了技术依据。
关键词:道路工程;抗紫外老化剂;高温性能;疲劳性能;低温性能
中图分类号:U414.1
文献标志码:A
文章编号:1672-7029(2013)05-0064-07
Effect of anti-ultraviolet additive on asphalt performance
WEI Hui, ZENG Sheng, L Zhencun, ZHAO Jian, GUO Xin
School of Transportation Engineering, Changsha University of Science and Technology, Changsha 410076, China)
Abstract: In order to solve the problem of aging effect of the ultraviolet light on southern humid asphalt pave-
ment, experiments were performed by taking advantage of ultraviolet radiation aging environment box and DSR
which studies the effect of aging time, anti-ultraviolet additive(gw-944 )on the dynamic property of material
under high temperature, low temperature and fatigue properties performance of asphalt. The results show that
strong ultraviolet reduces the fatigue performance of asphalt and low temperature performance, and improves the
anti-rutting performance which increases with the extension of aging time. Hindered amine GW-944 is good
for SBS modified asphalt for the improvement of the resistance to ultraviolet radiation aging performance, and
there is a suitable application range. The optimum mixing amount is 0.5%, but it is not suitable for matrix as
phalt performance improvement. Research result affords technical reference to effectively prevent and control ul-
traviolet aging on asphalt pavement
Key words: road engineering; anti-ultraviolet additives; high temperature performance; fatigue properties
temperature performance
强烈的紫外光线不仅可以降低沥青及沥青混主要集中在热老化方面,李立寒等叫通过黏度、动
合料的耐老化性能,而且对沥青路面其他病害的发态剪切模量、蠕变劲度模量和拉伸试验结果,评价
生也可起到诱发作用。而目前关于沥青老化研究SBS改性沥青在老化前后的性能变化程度。栗培
收稿日期:2013-05-09
基金项目:教育部新世纪优秀人オ支持计划项目(NCET-11-0970);西部交通建设科技项目(20113184350);湖南省研究生科研创新
项目(CX2013B369)
作者简介:韦慧(1984-),女,广西百色人,博士研究生,从事道路材料、公路养护研究