ACT is Ecocem’s new low-carbon cement technology that cuts CO₂ by up to 70%. This is its first major demonstrator project, delivered on a real construction site at Wembley Park in London and led by Sisk, one of the world’s biggest construction companies.
Sisk have published a Technical Report about the project that explains what was built, how ACT performed, and what it means for the future of construction. Download the report here to see the full data, testing approach, and outcomes.
The project was funded by Innovate UK and brought together industry experts from Ecocem, Sisk, Ramboll, Loughborough University, Creagh Concrete, Capital Concrete, BRE Group and Quintain to build the first structure of its kind ever made with ACT.
Testing showed that ACT reduced the concrete’s carbon footprint by 70% while meeting performance requirements across ready-mix, precast concrete and structural elements including slabs, walls, columns, and stairs floors, walls, stairs, columns, and precast elements.
If you want the full picture, including the test results and lessons learned, the full report is available here.
This collaboration highlights how partnership is essential to decarbonising construction. No single organisation can address the sector’s carbon challenge alone; progress depends on shared knowledge, real‑world testing, and industry‑wide cooperation.
By working together, the consortium demonstrated not just that Ecocem ACT can perform at scale, but also that collaborative approaches accelerate innovation.
Independent verification was central to the demonstrator’s success. Throughout the project, ACT concrete was rigorously tested by Loughborough University and BRE Group, who assessed its strength, durability, and environmental performance under real‑world construction conditions. Life-cycle analysis was carried out by SISK, you can view the results here
Their evaluations confirmed that ACT consistently met the structural requirements for every application tested including slabs, walls, columns, stairs, and both ready‑mix and precast elements. These findings provide assurance that ACT can perform reliably in everyday construction.
Beyond structural performance, the independent testing also explored the broader environmental credentials of ACT. Through detailed environmental and life‑cycle assessments, the consortium demonstrated that ACT provides a significant reduction in embodied carbon without compromising safety or durability.
Together, these external validations help build confidence across the industry, showing that low‑carbon concrete is not only technically feasible but ready for practical adoption at scale.
