大连理工大学学报2026，Vol.66Issue(1)：94-102,9.DOI:10.7511/dllgxb202601012
基于微观角度的老化沥青评价指标研究
Research on evaluation indexes of aged asphalt based on micro perspective
摘要
Abstract
In order to quantitatively analyze the influence of asphalt functional groups on macro-technical indexes during the whole aging process,a temperature cycle aging oven is used to carry out short-term and long-term aging tests on three types of matrix asphalt and two types of modified asphalt,and the chemical characteristics of the asphalt functional groups are analyzed by using the Varian 600-IR Fourier transform infrared spectrometer.By simulating different aging conditions and combining with multi-dimensional spectroscopy detection technology,the molecular structure evolution of asphalt materials in the aging process is systematically analyzed,and the microscopic evaluation indexes suitable for evaluating the aging degree of asphalt are screened and recommended,and the correlation between the microscopic evaluation indexes and the basic technical indexes and rheological property index is established by using the SPSS statistical software.The study confirms that the carbonyl peak area is more effective than the sulfoxide peak area in characterizing the aging micro-characteristics of asphalt.In the matrix asphalt system,carbonyl peak area shows a significant correlation(R2＞0.9)with both the basic technical indexes and rheological property index,while the correlation between the rotational viscosity of modified asphalt and carbonyl peak area is weak.The analyses show that carbonyl peak area can be used as an effective index to assess the microstructural evolution of asphalt aging.关键词
道路工程/官能团/老化/温度循环老化箱/红外光谱扫描/沥青Key words
road engineering/functional groups/aging/temperature cycle aging oven/infrared spectral scanning/asphalt分类
交通工程引用本文复制引用
刘亚敏,高晨光,钟国亮,韩旭晖,官鑫..基于微观角度的老化沥青评价指标研究[J].大连理工大学学报,2026,66(1):94-102,9.基金项目
国家自然科学基金资助项目(52278431) （52278431）
长安大学研究生科研创新实践项目(300103724037). （300103724037）
