Biobaserad asfalt för hållbar infrastruktur

Purpose and goal:

The objective of this project is to evaluate the long-term performance of asphalt pavement structures made of bio-extended binders, thus reducing the climate impact of the asphalt production. To achieve this, a full-scale accelerated tests as well as field tests will be conducted. Expected results and effects:

The expected outcomes of this project can assist The Swedish Transport Administration (Trafikverket) as well as the bitumen and construction industry in understanding the effects of bio-extended binders on the long-term

pavement conditions. This can serve as a basis for establishing knowledge regarding the bio-extended binders with respect to long-term performance, thus, facilitate a wider implementation and further development of bio-extended binders in the asphalt industry. Approach and implementation:

The first step of this project mainly focuses on laboratory characterization of the bio-asphalt materials. In the second step, full-scale evaluation of instrumented test structures will be conducted using an accelerated full-scale test facility at VTI. Additionally, a field test section on a selected heavy trafficked road will be constructed using a bio-extended binder and monitored using sensors installed in the pavement as well as non-destructive test methods and surface profile measurements. Life cycle cost analysis of the pavement structures will also be conducted.