Development of New Road Design Method in Sweden

There are problems in implementing new design models in a country. Since 1998, Sweden has been conducting a strategy for developing a new model for road design, including the implementation of this model. Today a new model for calculation of stress and strain is ready. It can perform calculations for asphalt pavement with viscous elasticity and unbound material with non-linear elasticity. In 2005, the model is to be supplemented by calculation modules for permanent deformations in bituminous bound layers and in unbound layers, based on the theories behind the new AASHTO “Design Guide” and recent research results in France and Germany. Implementing this model has involved four years of continuous training of new road designers in Western Sweden, with participation of consultants and contractors. During 2005/06 five different projects are going to be chosen to demonstrate the new model. Road quality is to be improved by “active design” on-site. Unbound material is to be tested by triaxial tests, and there are to be calculations of future permanent deformations. The results are to be used in deciding pavement thicknesses for different parts of the road. Road pavement optimization in this way will save a lot of money. A better design method and relating test methods should also make it possible to avoid most of the problems of early failure of roads. These projects will also serve as an education of contractors and consultants.

• Corporate Authors:

  Transportation Research Board

  500 Fifth Street, NW
  Washington, DC  United States  20001
• Authors:
  • Huvstig, Anders Bertil
• Conference:
  • Transportation Research Board 85th Annual Meeting
  • Location: Washington DC, United States
  • Date: 2006-1-22 to 2006-1-26
• Date: 2006

Language

• English

Media Info

• Media Type: CD-ROM
• Features: Figures; References;
• Pagination: 10p
• Monograph Title: TRB 85th Annual Meeting Compendium of Papers CD-ROM

Subject/Index Terms

• TRT Terms: Asphalt pavements; Mechanistic design; Pavement base course; Pavement design; Thickness
• Subject Areas: Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways;

Filing Info

• Accession Number: 01020522
• Record Type: Publication
• Report/Paper Numbers: 06-0445
• Files: BTRIS, TRIS, TRB
• Created Date: Mar 3 2006 10:21AM