OUR TECHNOLOGY

Biochar, engineered
for concrete.

Biochar holds carbon originally captured by biomass. Our proprietary treatment changes how it interacts with cement and mixing water, creating an additive designed to replace part of the cement while keeping that carbon in the product.

Explore the pilot programme

A sample of GreenMixes engineered biochar additive — GreenMixes engineered additive · development sample

From waste to concrete.

Explore the material’s journey.
Select a stage to see how it works.

Wood chips, an example of waste biomass feedstock — Illustrative biomass feedstock · wood chips

A new use for residues

Start with what’s left behind.

Agricultural residues and wood waste provide the starting point. These biomass resources can be converted into biochar, giving their biogenic carbon a new material use.

INPUT: Biomass residues
PROCESS: Feedstock selection
OUTPUT: Material for biochar production

A sample of the engineered GreenMixes additive — Engineered additive · GreenMixes development sample

The GreenMixes difference

Engineer the interface.

Our proprietary functionalisation changes how biochar interacts with cement. The result is a dust-free product that works with larger particles and improves workability, with improved strength compared with milled biochar in development testing.

Explore the advantages

INPUT: Qualified biochar
PROCESS: GreenMixes functionalisation
OUTPUT: Engineered cement-replacement additive

A GreenMixes concrete mixture during development testing — Concrete mix · GreenMixes development trial

Built around existing processes

Straight into the mix.

Incorporate GreenMixes during conventional concrete mixing, without a separate pre-soaking step. We target partial cement replacement—not sand—while embedding biogenic carbon in the material.

INPUT: GreenMixes + concrete ingredients
PROCESS: Mix, pour, mould and set
OUTPUT: Concrete with stored biogenic carbon

An early GreenMixes concrete paver prototype — Early paver prototype · product validation in development

From material to application

A practical place to begin.

Our first applications are non-structural precast pavers and masonry. These controlled factory environments provide a route to repeatable production and product-specific validation, with broader applications to follow.

Explore a manufacturing pilot

INPUT: GreenMixes concrete
PROCESS: Application-specific testing
OUTPUT: Pavers and masonry first

01 / 05 Waste feedstock

WHAT THE TREATMENT CHANGES

Designed to work
in the mix.

Water interaction

Untreated biochar can absorb mixing water. Our treatment has improved workability relative to untreated biochar in development formulations.

Material performance

Development testing has shown improved compressive strength relative to milled biochar. Performance in a finished product is assessed against the manufacturer’s control mix.

Practical handling

A dry, dust-free product designed to work with larger biochar particles and conventional mixing, without a separate pre-soaking step.

Results depend on feedstock, formulation and application. Selected formulations have achieved up to 20% cement replacement; this is not a universal replacement level. Independent testing and product-specific certification are in development.

Discuss a manufacturing pilot

Biochar, engineeredfor concrete.