摘要
运用贝特四组分法、傅立叶红外光谱法和动态剪切流变仪研究了紫外线对沥青的组成、结构及性能的影响。贝特四组分法结果表明紫外老化后沥青质含量增加而芳香分含量减少;傅立叶红外光谱法结果表明沥青老化后出现了明显的羰基和亚砜基波峰;流变试验结果表明沥青在低温下复合模量明显增大,然而在高温下复合模量变化甚微。
The effects of ultraviolet ageing on the components,structure and properties of bitumen were evaluated by Corbett method,Fourier transform infrared(FTIR) and the dynamic shear rheometer (DSR),respectively.The results of Corbett method showed that the asphaltene content increased while the content of aromatics decreased,the FTIR results indicated that more carbonyl and sulphoxide groups appeared after ageing,and the DSR results showed that ultraviolet ageing significantly increased the complex modulus at low temperature,but had a little effect on complex modulus at high temperature.
出处
《武汉生物工程学院学报》
2009年第2期102-105,共4页
Journal of Wuhan Bioengineering Institute
关键词
沥青
紫外线老化
四组分
羰基
复合模量
asphalts
ultraviolet ageing
four fractions
carbonyl
complex modulus
