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Investigation of the Rheological Properties and Chemical Structure of Asphalt under Multiple Aging Conditions of Heat, UV and Aqueous Solution

Journal Article (2022)
Author(s)

Yingxue Zou (Wuhan University of Technology)

Ling Pang (Wuhan University of Technology)

Shi Xu (TU Delft - Materials and Environment, Wuhan University of Technology)

Shaopeng Wu (Wuhan University of Technology)

Miao Yuan (Foshan Transportation Science and Technology Co.)

Serji Amirkhanian (University of South Alabama)

Haiqin Xu (Wuhan University of Technology)

Yang Lv (Wuhan University of Technology)

Xiang Gao (Wuhan University of Technology)

Research Group
Materials and Environment
DOI related publication
https://doi.org/10.3390/ma15165711
More Info
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Publication Year
2022
Language
English
Research Group
Materials and Environment
Issue number
16
Volume number
15
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Abstract

During the service period, asphalt materials are affected by various natural factors, including heat, ultraviolet light, oxygen and moisture, etc., resulting in the reduction of pavement performance, the increase of pavement distress and shortening of service life. This study aims to investigate the aging performance of asphalt under multiple aging conditions of heat, UV and aqueous solution. Thermal-oxygen aging, UV aging and hydrostatic erosion tests were carried out sequentially on asphalt. The rheological properties, chemical structure and element composition of asphalt were characterized before and after aging, and the effect mechanism of multiple conditions was discussed. The results show that the multiple conditions of heat and UV can increase the rutting resistance and weaken the cracking resistance of asphalt. However, the effect degree of UV decreases gradually with the deepening of aging degree. Additionally, the effect of water on the physicochemical properties is less than that of UV; however, water can increase the sensitivity of physicochemical properties to UV. In summary, this study explored the short-term cycling effect of heat, light and water on asphalt and provided an idea for simulation test of asphalt under multiple aging condition.