好色先生TV

The team working on HS2鈥檚 London tunnels has won funding to trial clay as a cement alternative. 

The Skanska Costain Strabag joint venture (SCS JV) will replace carbon-intensive portland cement with repurposed london clay after receiving funding from Innovate UK. 

SCS JV is working alongside Arup, Tarmac, the University of Leeds and Sika UK along with Expedition Engineering and the Mineral Product Association on the HS2 permanent works. 

Data from the original trial shows that heated clay, which is extracted from the tunnel activities, is a viable alternative to cement. 

Although more research is needed, the preliminary trial results showed considerable carbon reduction figures and the potential to save tens of millions of pounds on a project similar in size to HS2. 

Innovate UK is investing 拢3.2m in seven projects to help propel the decarbonisation of the nation鈥檚 concrete industry. 

Apostolos Tsoumelekas, a materials engineering manager who has been heavily involved in developing the product, said: 鈥淭his innovation was first sparked by discussion with an expert in Arup who had been researching the applications of calcined clays in concrete.

鈥漌orking together with our customer and the supply chain we have been able to help turn this idea into reality.   

鈥淭he clay that is excavated from the HS2 tunnels is essentially a waste product.

鈥漌e have developed a process which calcines the clay and grinds it to a powder transforming it into a useful resource which can then be added to concrete replacing Portland cement.

鈥漈he results have been impressive and hopefully if it鈥檚 scaled up it could really help speed up the adoption of low-carbon concrete for commercial use.鈥�