From waste material to resource: Evaluation of surplus foundry sand for use in unbound road materials (RESAND)
Purpose and goal
In Sweden, approximately 200,000 tonnes of surplus foundry sand are landfilled each year, creating significant environmental challenges. This project aims to evaluate the possibility of reusing this surplus as a sustainable material for unbound pavement base layers.
Expected effects and result
The goal is to determine whether the sand can improve or maintain the load-bearing capacity, stiffness, and durability of unbound pavement layers without compromising environmental safety. The project aligns with Theme 2 of the call, focusing on increased use of secondary raw materials and reduced environmental impact from large waste streams.
Planned approach and implementation
Laboratory tests will evaluate the impact of the sand on road material properties under freeze–thaw cycles and prolonged water exposure, conditions common in the Swedish climate. Environmental tests will ensure compliance with Swedish leaching standards. The consortium consists of VTI, ten foundries, a sand producer (Sibelco), the Swedish Foundry Association, and three end users.
This English version is an AI-assisted translation prepared for the Swedish Metals & Minerals website. It has not been reviewed or approved by the project team or the funding agency.