Connect Plus, which manages the London orbital motorway for highways England, has been sufficiently impressed by Skanska’s work in pavement innovation to consider going further and pave the way for more widespread trials across the UK.

Last week Skanska laid fully recyclable, graphene-enhanced asphalt, Gipave, on a busy main road in Curbridge for Oxfordshire County Council. The first UK trial of the material is being led by Directa Plus, a producer and supplier of graphene-based products for use in consumer and industrial markets, and Iterchimica, an Italian based producer of asphalt additives.[See our previous report here.]

The Curbridge works, delivered by subcontractor Aggregate Industries, involved removal and reinstatement of the existing carriageway to a depth of 150mm over a 750-metre section. One lane was replaced using conventional materials, effectively acting as the control measure, while the opposite ‘trial’ lane was resurfaced using Gipave.

At the same time, on the M25 in Essex, Skanska laid an asphalt surface course between junctions 25 and 26 containing 50% recycled asphalt pavement – standard UK practice has always been to use no more than 10% recycled material in roads.