Effect of Aging on Urban Asphalt Pavement

Abstract:

The aging of asphalt pavement gets serious in the course of service due to the large number of vehicles and high pavement temperature. A survey was conducted on urban road’s asphalt pavement in the city of Tianjin. By analyzing the extracted asphalt sample from asphalt pavement built in different years, it shows that asphalt’s softening point and viscosity increase but its penetration and ductility attenuate with the extension of service period. Of which, the ductility changes dramatically with its ductility attenuating fast in the early years of service and the attenuation of ductility tending to slow down later. The vertical difference of aging in different depth of pavement is marked and degree of aging tends to attenuate from the surface to the center.

• Periodical: Advanced Materials Research (Volumes 671-674)
• Pages: 1287-1290
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.671-674.1287
• Online since: March 2013
• Authors: Ning Li Li, Xin Po Zhao, Chuang Du, Cai Li Zhang, Qing Yi Xiao
• Keywords: Aging, Asphalt Pavement, Ductility, Penetration, Softening Point, Urban Road, Viscosity

References

[1] Shen Jinan, Pavement Performance of Asphalt and Asphalt Mixture, People's Transport Press, Beijing, 2001. In Chinese.

[2] Deng Xuejun, Roadbed and Pavement Engineering, third ed., People's Transport Press, Beijing, 2010. In Chinese.