摘要
为了研究沥青路面铣刨料表面裹附的沥青在厚度方向分层老化的规律,将铣刨料中的沥青逐层抽提分离后进行红外光谱分析和凝胶渗透色谱分析。试验结果表明,铣刨料表面的沥青由外而内吸氧老化逐渐减弱,芳香分含量逐渐增多,同时大分子含量逐渐减小。另外,试验发现各层沥青中C=C双键的伸缩振动波数发生变化,由此推测C=O含量变化影响了C=C双键与C=O双键之间的共轭效应。
In order to study the stratified aging rule of asphalt pavement overlaid on the surface of asphalt paveInill materials, this study separated and extracted the bitumen in the milling material,and then conducted the analysis of infrared spectroscopy and gel permeation chroma-tography. The results showed that the oxygen aging on the surface of the milling materials gradually decreases from outside to inside ,the aromatic content gradually increases,and the macromolecule content gradually decreases. In addition,the test finds out that the C=C double bond wave number of each layer changes and it is thus inferred that the change of C=O affects the conjugation between C=C and C=O.
出处
《华东交通大学学报》
2017年第3期40-45,共6页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51568064)
关键词
铣刨料
分层老化
FT-IR
GPC
asphalt pavemill materials
stratified aging
FT-IR
GPC
