CoMLaG

Funded by Innovate UK, the award-winning CoMLaG project proposed an innovative approach to decarbonising concrete by integrating micronised limestone and graphene-based admixtures into the concrete mix.

The project was led by Cemex, featuring organisations including Galliford Try, Northumbrian Water, Sika and Graphene@Manchester (part of Manchester University), with support from Severn Trent Water and National Highways.

The project consisted of multiple lab tests to determine performance and metrics of various materials, followed by data review and evaluation.

The use of micronised limestone as a Supplementary Cementitious Material (SCM) reduces the need for OPC, thereby decreasing carbon dioxide emissions. Additionally, incorporating graphene, a novel 2D material, enhances the mechanical properties of the concrete, allowing for the use of higher SCM content without compromising strength development.

Following this, Galliford Try carried out a live pour at Northumbrian Water Sedgefield Treatment Works site, which proved to be a great success, with estimated carbon savings of up to 50% as compared to regular Cem1.

The project's achievements were recognised by the Building Innovation Awards, where it won the Best Carbon Reduction Innovation or Practice prize.