Case Study


Skanska, a leading global project development and construction company, aims to be more sustainable with a goal to become climate neutral by 2045. To achieve that, they sought to increase the use of recycled asphalt (RAP) in all road layers. This means using more SYLVAROADTM RP1000, a biobased rejuvenator, to allow for more effective asphalt recycling and minimization of virgin asphalt and aggregates production. Ultimately, this is intended to decrease the amount of greenhouse gas emissions in the environment, reducing Skanska’s carbon footprint.

In late 2017, Skanska paved a section of Motorway E20, in southwest Sweden, with 30 percent RAP on its binder layer and 50 percent on its base layer. The test trial showed that the SYLVAROAD additive enabled performance levels that were at least equal to the reference with 20 percent RAP on its binder layer and 30 percent on its base layer.

SYLVAROAD additives help reduce the cost of purchasing virgin materials as well as the potential disposal fees, while increasing asphalt mix sustainability. These factors can lead to significant cost savings without affecting performance quality. In a mix with 60 percent RAP, formulators can achieve a 25 percent cost reduction compared to 100 percent virgin mix. By using this biobased solution, Skanska achieved higher environmental and economic sustainability.