UK trials greener asphalt for roads.
National Highways, one of the leading organisations responsible for managing England’s motorways and major A roads, has recently conducted a groundbreaking trial for a low-carbon asphalt resurfacing scheme. This innovative initiative aims to significantly reduce carbon emissions while enhancing the quality and longevity of road surfaces.
The trial, set to kick off in Yorkshire on the A64 stretch from Bramham to Headley Bar, involves the use of a newly developed asphalt formula that has been rigorously tested by engineers at the esteemed University of Nottingham. This new asphalt blend is anticipated to cut down carbon emissions by a staggering 70%, dropping from 321 tonnes to 96 tonnes – which is equivalent to avoiding 229 one-way flights from Paris to New York.
Prior to implementation on the road, the new asphalt underwent a series of tests including wheel tracking, stiffness, and surface wear assessments to guarantee its durability and safety for motorists. Additionally, an anti-ageing additive has been incorporated into the asphalt mix to potentially extend the life of road surfaces by up to five years.
Furthermore, the project is committed to reducing carbon footprint across various aspects of the resurfacing process. This includes the use of an electric roller and hydrotreated vegetable oil (HVO), a more sustainable alternative to conventional diesel, for powering asphalt manufacturing plants and transport vehicles. Additionally, solar power has been harnessed to facilitate operations in facilities such as toilets and changing rooms.
Stephen Elderkin, Director of Environmental Sustainability at National Highways, expressed his enthusiasm for the project, stating, “We are revolutionising our approach to construction to achieve decarbonisation in road infrastructure, a pivotal step in propelling the UK towards a low-carbon economy. These initiatives are paving the way for transformative changes that not only preserve the environment but also enhance road quality and overall driving experience.”
This trial represents just one of National Highways’ many ongoing projects dedicated to achieving net zero carbon travel on UK roads by 2050. The organisation has proudly become one of the first to have ratified science-based net-zero targets through the Science Based Targets initiative (SBTi), slotting under the Ground Transportation – Highways and Rail sector.
In addition to these efforts, National Highways has joined forces with the Tree Council, a prominent national charity, to embark on a mission to plant a massive three million new trees by 2030 along the country’s extensive road network.
The collaboration between National Highways, University of Nottingham engineers, and a spectrum of sustainable energy solutions underscores the country’s commitment to fostering a greener, more eco-conscious future. By prioritising innovation, efficiency, and environmental stewardship, these initiatives are setting a high standard for sustainable infrastructure development in the UK.
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