论文部分内容阅读
采用薄膜烘箱试验、低温吸氧试验、自然老化试验及反相气液色谱对国产典型的石油沥青及组分进行了老化和加速老化试验。根据沥青老化前后物化性质及其变化，如粘度比、吸氧量、凝胶渗析色谱峰扩展、族组成的变化、含氧基团的变化及老化综合指数等评价了国产沥青的抗老化性能。建立了沥青吸氧动力学模型。初步讨论了提高沥青耐久性的途径
Aging and accelerated aging tests were conducted on domestic typical petroleum bitumen and components by using thin-film oven test, low-temperature oxygen test, natural aging test and reversed-phase gas-liquid chromatography. According to the physical and chemical properties before and after asphalt aging and its changes, such as viscosity ratio, oxygen uptake, gel permeation chromatography peak expansion, changes in family composition, changes in oxygen-containing groups and aging composite index evaluation of domestic asphalt aging resistance. A dynamic model of asphalt oxygenation was established. Preliminary discussion of ways to improve the durability of asphalt