Cemfree alkali-activated binder; an ultra-low carbon cement alternative.
Cemfree is a totally cement-free alternative to conventional concrete and a ground-breaking milestone in ultra-low carbon concrete technology.
Cemfree is classed as an Alkali Activated Cementitious Material (AACM). It is made up of 95% Ground Granulated Blast Furnace Slag (GGBS) and 5% activator and is 100% clinker free.
The activator chemically stimulates the GGBS creating an alkaline environment breaking it down to release its hydraulic properties forming a hardened solid structure, as per ‘normal’ Portland cement (PC) concretes. Cemfree is a powder and works exactly the same as Portland cement with no specialist techniques or kit required.
E10/105 Designated concrete
E10/132 Designed concrete
E10/150 Prescribed concrete
E10/160 Standardized prescribed concrete
Type of replacement material
Bouygues UK, Barking
DBG Warehouse Slab
Environment Agency, Foulton Hall, Harwich
Greencore Construction, Marcham, Oxfordshire
HP11 Austrey, Barston Gas Pipeline Diversion
Landmark Ltd & Berkeley Homes Royal Arsenal Riverside, London
Lloyd House eco-home, Kent
Thames Tideway Central, Kirtling Street
Use of Cemfree concrete for temporary slab piles at Newman St, Westminster