A study on change of family composition and properties of Liaoshu paving asphalt on aging

In this paper the change of family composition of the paving asphalt, which conforms to the standard of Sinopec Q/SHR-004-1998, was studied under cont inuous heating and atmosphere at three different temperatures (150, 163, 18 0 degreesC), at the same time, the changes of pavement performance were stu died. The results showed that at three different aging temperatures saturat ed hydrocarbon contents did not obviously change after 20 hours on aging. T he change of aromatic contents was different before and after 20 hours whil e resins and asphaltenes contents have changed noteworthily. After aging, r esins decreased noteworthily, asphaltenes increased obviously, the composit ion and structure of asphalt were destroyed which had the pavement performa nce go bad.