Prediction of rut development in asphalt concrete layers
|Coordinator||Statens väg- och transportforskningsinstitut - Statens väg- och transportforskningsinstitut, Linköping|
|Funding from Vinnova||SEK 1 400 000|
|Project duration||October 2016 - October 2019|
|Venture||The strategic innovation program InfraSweden|
Purpose and goal
The PEDRO program is a tool for estimation of permanent deformation or rutting in asphalt concrete layers under moving traffic loading and actual field conditions such as temperature, traffic speed and lateral distribution of traffic. In this project the PEDRO tool has been implemented and demonstrated on several road objects. The PEDRO program is available for downloading and also available as a web version.
Expected results and effects
Implementation of PEDRO for several road objects: Riksväg 40 Ulricehamn, motorway E20 Hova, Bus lane in Malmö city, motorway E6 Fastarp and a road section väg 678. Link för publications of the results is: http://www.metodgruppen.nu/web/page.aspx?refid=138
Planned approach and implementation
The project included measurements of contact area between tires and pavement surface, characterization of the most commonly used asphalt mixtures with respect to stability. Field measurements were also performed for validation of results. The measurements have been used as input to the PEDRO tool for predicting rut depth. Prediction of rut development on several road sections with regard to field conditions has been performed. The project work also included analysis by Master students at Chalmers and a PhD student at LTH.