NBS Source
Cemfree Concrete

Application

Suitable for:

  • Foundations (footings, piling)
  • Ground-bearing slabs
  • Footpaths and kerbing
  • Dense blocks for foundations and bearing walls
  • Block paving for driveways and car parks
  • Cast stone decorative concrete
  • Agricultural concrete; slats, channels
  • Masonry Mortar
  • Temporary works

Description

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.        

General information

Shape

Formless

Uniclass

Pr_20_31_12_13 Cement replacement materialsPrimary

CAWS

E10/105 Designated concrete

E10/132 Designed concrete

E10/150 Prescribed concrete

E10/160 Standardized prescribed concrete

Specification data - Cement replacement materials Enhanced data

Type of replacement material

Cemfree Binder.

Literature

Cemfree Concrete categorisation

Cemfree Concrete categorisation

Cemfree Specification Guide - Manufacturer's Guidance

Cemfree Specification Guide - Manufacturer's Guidance

Cemfree Technical Information

Cemfree Technical Information

Case studies

A14, Huntingdon

A14, Huntingdon

Bouygues UK, Barking

Bouygues UK, Barking

DBG Warehouse Slab

DBG Warehouse Slab

Environment Agency, Foulton Hall, Harwich

Environment Agency, Foulton Hall, Harwich

Greencore Construction, Marcham, Oxfordshire

Greencore Construction, Marcham, Oxfordshire

HP11 Austrey, Barston Gas Pipeline Diversion

HP11 Austrey, Barston Gas Pipeline Diversion

Landmark Ltd & Berkeley Homes Royal Arsenal Riverside, London

Landmark Ltd & Berkeley Homes Royal Arsenal Riverside, London

Lloyd House eco-home, Kent

Lloyd House eco-home, Kent

Thames Tideway Central, Kirtling Street

Thames Tideway Central, Kirtling Street

Use of Cemfree concrete for temporary slab piles at Newman St, Westminster

Use of Cemfree concrete for temporary slab piles at Newman St, Westminster

Third party certifications

BRE Certificate

BRE Certificate

Cemfree Binder Environmental Product Declaration (EPD)