Polishing Mechanism and Its Numerical Modeling for Flexible Pavement

Pavement polishing is a distress type exhibited with asphalt pavement and is caused by repeated sliding contact wear on the pavement wear course. In this paper, pavement polishing mechanisms are first discussed. Next, a finite element procedure to predict pavement polishing is developed. A modified Archard's wear law is used to calculate geometric change based on contact pressure and relative slip between 2 bodies. The material loss due to polishing is realized through the geometric change. The thickness loss is also used together with deformation to calculate the polishing configuration due to surface ablation. The polished configuration will be adaptively remeshed for the next simulation time step. Thus, mechanical behavior due to pavement polishing can be reasonably captured. Representative simulations are provided to demonstrate the effectiveness of the proposed pavement polishing model, which include parametric study on material hardness and wheel slip rate. Further developments on pavement polishing modeling are also discussed.

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 01152110
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 28 2010 7:39PM