Permanently locking down CO2 into Concrete
Concrete4Change is developing novel technology for carbon sequestration within concrete, helping concrete manufacturers and the construction industry achieve net-zero.
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How the Technology Works and its Impact
Mineralising CO2 into Concrete
The innovation underpinning Concrete4Change is to engineer a concrete additive material that acts as a carrier for CO2. The process can be broken down into four steps as below.
Recycled waste
Recycled waste
Utilise Recycled Waste Materials for the Carrier
Our carrier is derived from waste streams, turning waste into value and promoting a circular approach. Examples include, recycled wood waste, glass waste, ceramic waste and plastic waste
Carrier Preparation
Carrier Preparation
Carrier Preparation
The precursor material for the carrier is prepared in order to become an ‘adsorbent’, that is able to capture and release CO2 for optimal carbonation of concrete.
Load CO2 into Carrier
Load CO2 into Carrier
Load CO2 into Carrier
The carrier is loaded with CO2 via the C4C process unit. Any source of CO2 can be used. For the benefit of circularity, flue gas from cement production is the main feedstock.
Mix With Concrete
Mix With Concrete
Mix with concrete
The loaded carrier is mixed with concrete (wet or dry). The carrier will then slowly release CO2 inside concrete for permanent mineralisation, increasing concrete strength, thereby reducing the amount of cement needed.
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The carrier is injected with CO2 captured from industry, with a particular focus on flue gas generated from cement production – providing a cost-effective route to CO2 utilisation.
C4C’s technology is aiming to increase the strength of concrete, therefore reducing the amount of cement required for a given strength of concrete, saving cost, and saving further CO2 emissions associated with cement manufacturing.
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Novel carrier methodology can be integrated with industry standard processes – no change in concrete production line is required
Any source of CO2 can be used (Flue gas and purified CO2)
Carrier made from waste materials to minimise the carbon footprint
Applicable to all types of cement and concrete including pre-cast and ready-mix concrete
10x more CO2 sequestration than existing approaches for ready-mix concrete
Production cost of concrete using our technology is significantly cheaper than conventional concrete
Globally implementable
Adjust the numbers in the table to reflect your mix design and see how much carbon you can potentially remove with C4C technology. The amount of carrier added is ~0.5% by the mass of the cement in concrete. C4C concrete mix assumes a 20% reduction in cement as a result of the strength increase from the C4C carrier
Interested in becoming a partner?
Join us on the journey of creating the net-zero pathway for concrete.
