As part of our commitment to minimise the environmental impact of our operations across the UK, US and Hong Kong we’ve joined the United Nations Race To Zero campaign.
On-site recycling reduces waste
The M4 Smart Motorway project involved replacing 11 bridges, the installation of a concrete safety barrier in the central reservation and extensive earthworks.
The original materials strategy for the project was for all site-won materials, demolition arisings from the 11 bridges and any other concrete that was extracted to go to landfill. All of the required aggregates and fill material needed for the project was to be sourced from multiple suppliers which would have created significant pressure on the local market.
Through My Contribution - our employee-led change programme - an idea was submitted to reuse materials that would have gone to landfill during project delivery. Working with the project’s designers, we developed a strategy to incorporate site won fill within the core of the embankments and to produce recycled aggregates from waste materials. The recycled aggregates were used to construct verge embankments, piling platforms, side road embankments and the foundations of the concrete safety barrier in the central reservation.
Our new approach meant that waste was reduced as materials that would have previously gone to landfill were reused on site. Those that could not be reused were sent to a local soil washing facility where they were processed for other uses out with the project.
Working closely with our supply chain partners and customer, our project team developed a cost-effective solution to reuse materials on-site.
Balfour Beatty has set out a roadmap to delivering a zero carbon construction site which we are trialling on a live site - the Royal Botanic Garden Edinburgh - Biomes Initiative.