UK researchers develop graphene-enhanced, low-carbon concrete

UK researchers have successfully mixed and laid a graphene-enhanced concrete mix that reduces CO2 emissions per cubic meter by up to 49% compared to traditional CEM 1 concrete while also maintaining a similar strength performance, the University of Manchester said July 30.

The concrete was developed through a collaboration of the university's Graphene Engineering Innovation Centre, Cemex UK, Galliford Try, Sika and Northumbrian Water. It was laid successfully at a Northumbrian Water wastewater treatment site in the UK, the university said in a statement.

"This project is a fantastic example of industry-led project with significant contributions from University of Manchester research facilities to reduce carbon emissions in construction," said Lisa Scullion, application manager at the GEIC.

The low-carbon concrete, known as CoMLaG (Combining Micronized Limestone and Graphene) which was developed and trialed at the GEIC and Cemex National Technical Center, uses a ternary cement blend which replaces a part of clinker with GGBS and micronized limestone. To counter the strength losses typically associated with clinker reduction, a graphene-based addition formulated at GEIC was introduced to enhance strength development.

After extensive lab trials, production was carried out through a batch plant in northeast England and used site-available aggregates and raw materials.

The next phase of the project will focus on optimizing the mix, improving admixture compatibility, and validating performance across a wider range of aggregates to support commercial rollout, the statement said.

"The successful deployment of the CoMLaG project on a live site demonstrates how the use of advanced materials can help us reduce carbon emissions whilst remaining focused on performance," said Mike Higgins, Cemex's director of quality and product technology.

Platts, part of S&P Global Energy, assessed CEMDEX Turkey at $55/mt FOB July 24