ACT technology trial success for Capital Concrete
Low-carbon cement technology demonstration successfully completed at Wembley Park
A NEW low-carbon cement technology ‘ACT’ which reduces the clinker content – the main CO2-producing component in cement – by replacing it with a fine limestone powder and recycled by-products such as ground granulated blast-furnace slag (ggbs) from steelmaking, has been successfully tested in a residential development in Wembley Park.
Developed by Ecocem and delivered by a consortium consisting of BRE Group, Capital Concrete, Creagh Concrete, Loughborough University, Ramboll Group, and Sisk, the material can be used to help reduce embodied carbon in cement by up to 70%.
Capital Concrete were involved throughout the project, initially testing and assessing the material at their Cricklewood laboratory for workability, flow behaviour, usable time frame during transport, and eventual strength prior to the demonstrator at Wembley Park.
Following successful testing, the Cricklewood team batched and delivered concrete using the ‘ACT’ technology to the Wembley site, and provided on-site technical support for each pour.
Jack Sindhu, technical director at Capital Concrete, said: ‘ACT performed consistently, demonstrating that the low-carbon technology can be produced, delivered, and placed at scale while meeting all technical specifications. It was a pleasure to work with both the technical and site teams throughout the project, and well done to the Cricklewood team for their commitment and hard work at every phase.’
Luke Smith, managing director of Capital Concrete, commented: ‘It is great to be part of such an important project focused on decarbonization in our industry. Working alongside our project partners, this trial has proven that ACT can be delivered at scale, marking a significant step towards the future of low-carbon construction.’
