基于沥青老化的红外光谱羰基吸光度分析  

Infrared Spectrum Analysis of Carbonyl Absorbance on Asphalt Aging

作　　者：丰晓[1] 叶奋[1] 黄彭[1] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海200092

出　　处：《建筑材料学报》2008年第3期375-378,共4页Journal of Building Materials

摘　　要：利用红外光谱测定了沥青老化前后羰基吸收峰的红外光谱,计算了不同老化程度沥青吸光度的比值,并对其针入度的变化进行了对比,结果发现,沥青老化与针入度之间有很好的相关性.这对分析沥青老化机理有很大帮助.Oxidation is the main cause for road asphalt aging.Asphalt aging contributes to a decrease in penetration and deterioration in pavement performance.Asphalt aging yields a lot of polar carbonyl group.Infrared spectrum of original and aged asphalt samples was investigated,and the absorbance ratio of different degree of aging was calculated.According to penetration changes of aged asphalt,there is a direct correlation between penetration and infrared spectrum absorbance changes.A relationship between pavement performance and asphalt chemical composition is established.The result is of value to analyse asphalt oxidation mechanism.

关 键 词：沥青老化 氧化机理 羰基 红外光谱 吸光度 

分 类 号：U416.217[交通运输工程—道路与铁道工程]