Evaluation of load-carrying capacity of asphalt superstructures from deflection measurements

This paper describes new findings related to the bearing behaviour of thick asphalt pavements. General analysis including finite element method (FEM) shows, that for thick asphalt pavements, half-space based, plate theory based and FEM-based methods are suited for bearing analysis. An easy-to-use regressive evaluating method based on plate theory is presented and verified in an investigation of a load capacity of seven German motorways including laboratory results from numerous cores. It can be shown, that the deflection at the surface of an asphalt pavement depends predominantly on thickness of one (ore sometimes two equivalent) load distributing layers of superstructure, which are not necessarily as thick as the whole asphalt pavement slab. Reason for this misbehaviour is very likely lacking bond between layers, especially if a bigger area is affected.

Language

  • English

Media Info

  • Pagination: 10p
  • Monograph Title: Transport Research Arena (TRA) 2014 Proceedings

Subject/Index Terms

Filing Info

  • Accession Number: 01534622
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: VTI, TRIS, ATRI
  • Created Date: Aug 14 2014 10:16AM