Innovating cement formulations for carbon‑efficient construction

Recognising the urgent need to reduce the carbon footprint of the construction sector, RP researchers embarked on a project to address emissions arising from conventional cement production. Cement manufacturing, particularly clinker production, is a major contributor to global CO₂ emissions, creating strong industry demand for sustainable, low‑carbon alternatives that do not compromise performance or compatibility with existing processes.

Led by RP researchers from the School of Applied Science (SAS), the project partnered with an industry renewable materials provider to develop a biochar‑limestone composite cement. By integrating carbon‑rich biochar derived from waste biomass with finely ground limestone as partial cement replacements, the team formulated a low‑carbon cement designed for seamless use in ready‑mixed and precast concrete operations. Laboratory studies demonstrated strong synergy between the two materials, enabling improved later‑age strength, reduced permeability, and enhanced durability, while supporting permanent carbon sequestration through accelerated carbonation.

The resulting formulation achieved compliance with relevant cement standards and demonstrated the potential to maintain or exceed conventional concrete performance while significantly lowering embodied carbon. This technology has been successfully commercialised to the industry partner and highlights how applied research at RP can translate waste‑derived materials into scalable construction solutions, and supporting greener infrastructure.

Looking to develop sustainable construction solutions for your business? Find out how RP can partner with your organisation to translate applied research into practical, low-carbon innovations for the built environment.