所属单位：土木工程学院

发表刊物：Advances in Civil Engineering and Architecture Part 2. Trans Tech Publications(CEABM2011)

关键字：中文关键字：沥青，英文关键字：asphalt; aging; mechanism; chemical reaction

摘要：Asphalt aging occurs both in the construction period and in the service period of asphalt pavement. It is believed that aging could have a big influence on the rheological mechanical and adhesion characteristics of the asphalt. Asphalt aging is a process associated with a lot of factors as heat, rays, oxygen, and ozone. In the aging process, some chemical compositions of asphalt are subject to be activated by these factors and undergo some chemical changes. A theoretical analysis at a chemical reaction level to the asphalt aging mechanism is presented in this paper. Asphalt aging can be sorted as thermal oxidation aging, ray oxidation aging, and ozone oxidation aging. The thermal oxidation aging usually occurs in the components with chains and double bonds in their molecules. The ray oxidation aging can be found in components with one carbonyl or more carbonyls. Those components with a π key in their molecular structures are prone to the ozone oxidation aging.

备注：张倩

第一作者：张倩

论文类型：期刊论文

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是否译文：否

发表时间：2011-06-01