Reducing carbon emissions across the built environment is a critical challenge for the construction and infrastructure sectors. As the UK works towards its legally binding net-zero targets, infrastructure materials are increasingly assessed not only for performance and cost, but also for their embodied carbon and whole-life environmental impact.
The UK cement and concrete sector, including cement, readymixed concrete and precast concrete has established a clear pathway to reduce emissions through industry-wide strategies led by our producer members.
Precast concrete drainage systems form part of this wider transition, combining long service life, efficient factory production and continual reductions in manufacturing carbon intensity.
A Sector Roadmap to Net Zero
The UK concrete and cement industry has published a detailed decarbonisation pathway through the MPA UK Concrete and Cement Industry Roadmap to Beyond Net Zero. The roadmap sets out the technologies, policy support and industry actions needed to achieve net-zero and beyond across the concrete value chain.
The strategy identifies several key areas of transformation:
Together these measures are expected to significantly reduce the embodied carbon of concrete products over the coming decades while maintaining the performance and durability required for critical infrastructure.
Positive progress has been made by the sector achieving an emissions reduction of 63% between 1990 and 2023 meaning that the concrete sector is already decarbonising faster than the UK economy as a whole.
Detailed information of the decarbonisation routemap and progress to date can be found here:
https://www.thisisukconcrete.co.uk/Resources/UK-Concrete-and-Cement-Roadmap-to-Beyond-Net-Z.aspx
Utilising Precast Concrete Drainage to lower project carbon
Precast concrete drainage manufacturing specifically supports carbon reduction through controlled factory production, allowing materials and processes to be optimised. Strong durable precast concrete products also allow material efficiency in installation by optimising the use of bedding material, something much harder to achieve with competitor systems.
It is important however that infrastructure projects be assessed based on whole-life carbon performance, not only the emissions associated with manufacturing.
Precast Concrete Drainage systems are typically designed as long-life buried infrastructure, often with design service lives in excess of 100 years. Durable systems reduce the need for repair, replacement or reconstruction, all of which generate additional carbon emissions.
The Role of Environmental Data
Transparency in carbon reporting is also an important element of the industry’s decarbonisation strategy. The concrete and precast sector increasingly publishes independently verified environmental data to support informed design and specification decisions.
Environmental Product Declarations (EPDs), developed using lifecycle assessment methodologies, provide consistent information on the environmental impacts of construction products.
MPA Precast has previously published EPDs for drainage products and is in the process of updating these.
In the meantime, data on sector environmental performance can be found in the annual MPA Precast Sustainability report.