Change Characteristics Analysis of the Aged Pavement Asphalt Components
This paper proposes a research work that characteristically analyzes the component differences between new and aged pavement asphalts. Both the new and aged pavement asphalts are sampled from the same type and separated into four components: saturate, aromatic, resin and asphaltine. Based on the comparative analysis regarding the masses, functional groups and structural features of each component, it is found that the aged asphalt has less saturate and aromatic but more asphaltine, lower mass ratio of resin to asphaltine, and decreased compatibility of asphatine with saturate and aromatic. Also, although there is little change in the infrared spectra of saturate and aromatic, the infrared spectra of asphaltine are different, with those oxides that contain C, N and S being significantly increased in the aged asphalt.
Chaohe Chen, Yong Huang and Guangfan Li
Y. Y. Liu et al., "Change Characteristics Analysis of the Aged Pavement Asphalt Components", Advanced Materials Research, Vols. 243-249, pp. 6101-6105, 2011