Cemfree
An alkali-activated cementitious binder (AACM) using no Portland cement at all. It activates industrial by-products such as GGBS and PFA to make concrete, with a manufacturer-stated embodied-carbon cut of up to 85% versus traditional cement. PAS8820-standard testing and BSI conformance (Optima) stated. Used on major UK infrastructure including the McLaren ExCeL expansion and Thames Tideway.
The first record on the low-carbon binder axis. Answers the cement-replacement question at binder level rathe…
- Manufacturer
- Cemfree (SigmaRoc) (United Kingdom)
- Evidence
- Manufacturer documented
- Feedstock
- Industrial by-product
- Checked
- 2026-09-03