M5 Road Resurfacing Includes Graphene-enhanced Section
HOLCIM UK, working in partnership with National Highways, have completed one of the first demonstration schemes aligned to the new E21 Stone Mastic Asphalt (SMA) specification.
The M5 J28–30 project marks a significant milestone in the UK’s transition to more durable, lower-emission road infrastructure. Developed through National Highways’ Low Carbon Demonstration Fund, the scheme showcases how collaboration between Holcim UK and their supply chain partners can accelerate innovation from concept to carriageway.
As part of this demonstration, a section of the E21 SMA incorporated graphene, further enhancing the mechanical strength, fatigue resistance, and long-term durability of the surface, and exploring advanced materials that can extend pavement life, reduce maintenance cycles, and support lower-carbon road construction.
The resurfacing demo uses Holcim’s ProLay Ultra asphalt, a next-generation surfacing solution. Designed with a carefully balanced aggregate matrix, increased bitumen content, and polymer-modified bitumen (PMB), ProLay Ultra achieves a low in-situ void content for enhanced resilience and long-term performance.
The M5 project saw Smooth Ride technology deployed to precisely control surface levels and optimize ride quality, enhancing both performance and driver comfort while reducing future maintenance needs. The system integrates light detection and ranging (LiDAR) mapping and 3D road modelling modelled by Driven International and MK Surveys, which guided precision milling through Topcon and Wirtgen systems operated by Tripod Crest.
Neil Leake, national technical manager for contracting at Holcim UK, said: ‘The M5 has provided the perfect opportunity to showcase the next generation of surface performance – a scheme that brings together low-carbon materials, advanced paving technology and all within the new National Highways specification. It’s a demonstration of how technical excellence and collaboration can deliver real change across the UK’s strategic road network.’
Read the original article on Graphene-Info.