摘要
为研究彩色沥青的结构特性及路用性能,基于傅里叶变换红外光谱试验,对比了彩色沥青CA70、CA90和道路石油沥青A70、A90短期老化前后的峰形特征,分析了沥青常规性能指标、组分及官能团的变化.结果表明,选用的彩色沥青和道路石油沥青的官能团主要集中在特征区(1 160~3 100cm^(-1))和指纹区(650~1 160 cm^(-1)),特征区官能团峰形一致,而指纹区的峰形不同.短期老化后,沥青红外光透射率有一定程度增加,针入度降低,延度值下降;指纹区面积的变化与沥青组分含量及性能变化相关.
Characteristics of peak shape for CA70/CA90 colored asphalt and A70/A90 road petroleum asphalt before and after short-term aging are compared in order to study the structure characteristics and pavement performance of colored bituminous.The conventional performance indicators,composition and functional groups changing of asphalt are analyzed.The results show that functional groups of colored asphalt and road asphalt are mainly concentrated in two areas,feature area(1 160~3 100 cm-1)and fingerprint area(650~1 160 cm-1).Peak shape of colored asphalt feature area keeps pace with that of the petroleum asphalt.Nevertheless,their fingerprint shapes are different.Asphalt infrared transmittance increases to a certain extent after short-term aging,the penetration and ductility values decrease.Changing of fingerprint area associates with the disintegration of composition and performance of asphalt.
作者
徐鹏
陈华鑫
牛冬瑜
郭彦强
樊涛
XU Peng;CHEN Huaxin;NIU Dongyu;GUO Yanqiang;FAN Tao(School of Materials Science and Engineering,Key Laboratory of Road Structure&Material Ministry of Transport,Chang'an University,Xi'an 710061,Shaanxi Province,P.R.China;Xi'an Highway Research Institute,Xi'an 710065,Shaanxi Province,P.R.China)
出处
《深圳大学学报（理工版）》
EI
CAS
CSCD
北大核心
2018年第2期146-150,共5页
Journal of Shenzhen University(Science and Engineering)
基金
国家自然科学基金资助项目(51608045)
陕西省工业科技资助项目(2015GY153)
道路结构与材料交通行业重点实验室基金资助项目(310821171114)
关键词
道路工程
彩色沥青
石油沥青
指纹区
傅里叶变换红外光谱
结构特性
road engineering
colored asphalt
petroleum asphalt
fingerprint region
Fourier transform infrared spectroscopy
structural characteristics
