Influence of Elastic Characteristic of Asphalt Pavement Surface on Tire–Pavement Friction Behavior

The skid-resistance performance of pavement has been the key factor affecting traffic safety. Recent studies mainly focused on the anti-skid behavior of roads by means of macro or micro texture of the pavement. It is inevitable that skid resistance declines because the texture of pavement deteriorates in its service life. The primary objective of this paper is to evaluate the effect of different asphalt pavements of variable resilience on braking performance on pavement. Based on the systematic dynamics of tire-pavement contact, the tire-road coupled friction mechanism is analyzed, and the effect of enlarging the tire-pavement contact area in road skid resistance was investigated by changing the elastic modulus of asphalt pavement. Initially, this research constructed the kinetically contacted model of tire-pavement friction; furthermore, the following were studied when braking: contact behaviors such as tread deformation in tangential interface, actual contact area between tire and pavement surface course, and the braking force supported by pavement to tires. It was observed that with improvements in pavement elasticity, the actual tire-pavement contact area increased, which can effectively strengthen the frictional adhesion of the tire to the pavement. Therefore, it should not be overlooked that the improvement in skid resistance was contributed by the elasticity of pavement. This research approach provided a theoretical basis and design reference for anti-skid research of asphalt pavements.

• Supplemental Notes:
  • This paper was sponsored by TRB committee AFK40 Standing Committee on Surface Requirements of Asphalt Mixtures.
• Authors:
  • Yu, Miao
  • Wu, Guoxiong
  • You, Zhanping
  • Kong, Lingyun
  • Tang, Yu
  • Lv, Jianbing
• Conference:
  • Transportation Research Board 97th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2018-1-7 to 2018-1-11
• Date: 2018

Language

• English

Media Info

• Media Type: Digital/other
• Features: References;
• Pagination: 4p

Subject/Index Terms

• TRT Terms: Asphalt pavements; Braking; Friction; Modulus of elasticity; Rolling contact; Skid resistance
• Subject Areas: Highways; Pavements;

Filing Info

• Accession Number: 01658409
• Record Type: Publication
• Report/Paper Numbers: 18-01347
• Files: TRIS, TRB, ATRI
• Created Date: Jan 29 2018 5:53PM