We turn CO2 into value.

Our Mission

Co-reactive is on a mission to turn CO2 into value by pioneering a breakthrough carbon mineralization technology that transforms CO2 into high-performance Supplementary Cementitious Materials (SCM) to enhance the strength and durability of cement-based construction materials, driving carbon neutrality of high-volume construction sector.

Our Vision

We strive for a world in which construction is carbon neutral through carbon negative materials.

Our Product

The Future of Low-Carbon Cement & Concrete

CO‑SCM is a high‑performance, carbon‑negative Supplementary Cementitious Material (SCM) specifically engineered to maximize pozzolanic reactivity and improve cementitious properties. Unlike conventional SCMs, CO‑SCM permanently binds CO₂ by mineralizing it into stable carbonates within the solid matrix, thereby acting as a long‑term carbon sink. At the same time, the material enables high strength and durability, making it a strong solution for low‑carbon construction.

Applications
of CO-SCM

CO-SCM seamlessly integrates into a wide range of cement and concrete applications, offering superior performance, sustainability, and cost benefits across multiple industries.

CO-SCM:
A Game-Changer for Sustainable Construction

A Carbon-Negative (carbon-storing) Supplementary Cementitious Material (SCM) for Sustainable Construction

Why Choose
CO-SCM?

We understand that sustainability matters—but so does performance and cost. CO-SCM is designed to provide all three.

Lower carbon footprint without changes to existing production processes

High strength and durability enabled by a significant amorphous silica content

Alignment with sustainability regulations and corporate climate targets

Cost‑efficient material economics, enabling competitive pricing in a rapidly evolving market

Product

CO-SCM: A new generation of low-carbon Supplementary Cementitious Material (SCM) for sustainable construction.

Features

The high puzzolanic reactivity of CO-SCM enables clinker-efficient cement and concrete formulations. Strength Acticity Index exceeds 100 according to EN 450-1

Benefits

The price of CO-SCM is competitive to the conventional SCMs with unique carbon-efficiency and availability at scale - directly at your site

Sustainability

With around 330 kg of CO₂ permanently stored per tonne, CO‑SCM enables truly carbon‑negative construction materials.

Turn Cost
into Profit

  • Drastically reduce CO₂ costs & certificates (ETS, CBAM)

  • Meet ESG criteria & increase market attractiveness

  • Unlock long‑term economic value through green building materials
  • Complement traditional SCMs without disrupting existing formulations

Turn Uncertainty
into Trust

  • Technically validated and certified materials
  • Compliance with relevant norms and standards
  • Collaboration with leading industry partners

  • Locally sourced, sustainably available raw materials

Our Technology

Our journey begins with selecting the perfect feedstock materials. We use magnesium and calcium silicate minerals, like olivine, which are abundant and already mined at scale. Additionally, we upcycle secondary minerals from metallurgical processes, giving them a new life through our proprietary carbon mineralization process. These materials are finely milled into a powder, ready to undergo carbonation.

The required CO₂ for our process can come from various CO₂ sources, such as cement plants, power generation, waste combustion, biogas plants, Direct Air Capture, or pipelines. We can set up our site directly next to source point emissions to minimize the costs of CO₂ transportation.

The powder is then suspended in water before it enters our tubular reactor system. The reactor operates under high pressure and temperature to accelerate the transformation of the feedstock powder into rock-solid carbonates and amorphous silica. At the exit of the reactor, the feedstock is completely transformed into high-performance CO-SCM.

After the liquid suspension has passed the reactor the newly formed CO-SCM material is seperated from the water using a filter press. In a rotary dryer the residual moisture evapurates and the CO-SCM exits as a fine powder ready to be used.

CO-SCM seamlessly integrates into a wide range of cement and concrete applications, offering superior performance, sustainability, and cost benefits across multiple industries. It can be delivered in big bags or silos.

Our journey begins with selecting the perfect feedstock materials. We use magnesium and calcium silicate minerals, like olivine, which are abundant and already mined at scale. Additionally, we upcycle secondary minerals from metallurgical processes, giving them a new life through our proprietary carbon mineralization process. These materials are finely milled into a powder, ready to undergo carbonation.

The required CO₂ for our process can come from various CO₂ sources, such as cement plants, power generation, waste combustion, biogas plants, Direct Air Capture, or pipelines. We can set up our site directly next to source point emissions to minimize the costs of CO₂ transportation.

The powder is then suspended in water before it enters our tubular reactor system. The reactor operates under high pressure and temperature to accelerate the transformation of the feedstock powder into rock-solid carbonates and amorphous silica. At the exit of the reactor, the feedstock is completely transformed into high-performance CO-SCM.

After the liquid suspension has passed the reactor the newly formed CO-SCM material is seperated from the water using a filter press. In a rotary dryer the residual moisture evapurates and the CO-SCM exits as a fine powder ready to be used.

CO-SCM seamlessly integrates into a wide range of cement and concrete applications, offering superior performance, sustainability, and cost benefits across multiple industries. It can be delivered in big bags or silos.

Let’s connect

About us

Our Story

Co-reactive was founded 2024 based on several years of research of our Co-founder Andreas Bremen at RWTH Aachen. After his PhD, he partnered up with his fellow student Orlando Kleineberg and Willi Peter with the vision to decarbonize the construction industry at scale. With a complimentary skillset of research, industrial experience and commercialization we are destined to lead the future of low-carbon cement & concrete.

Dr. Andreas Bremen

Chief Executive Officer

CO2 Mineralization Expert

Orlando Kleineberg

Chief Technology Officer

Plant Engineering Expert

Willi Peter

Chief Commercial Officer

Strategic Partnerships and Sales Expert

Our Partners

News

16.03.2026

Co-reactive selected for the EIC Accelerator to scale carbon-negative construction materials

Co-reactive has been selected for the prestigious EIC Accelerator programme, supporting the scale-up of breakthrough technologies with the potential to transform global markets.

16.03.2026

GeoCRM Launches to Unlock Critical Raw Materials and CO₂-Binding Potential in Steel Slag

Co-reactive contributes its expertise in CO₂ mineralization to the GeoCRM research consortium, which aims to recover critical raw materials from steelmaking slag while turning the remaining mineral fractions into CO₂-binding materials for construction.

16.03.2026

Co-reactive secures €6.5 milion in seed funding

Co-reactive has raised €6.5 million in seed funding led by HTGF (with NRW.Bank, HBG Ventures, AFI Ventures, Evercurious VC) plus seven-figure BMWE grants to scale its continuous CO₂ mineralization process that turns captured CO₂ and minerals into high-performance, CO₂-negative SCMs for cement.

Turn Passion
into your career

We are seeking professionals to become part of our mission.

Be a key part of our team driving CO2 mineralization for lasting industrial carbon footprint reduction. If you are an expert in materials science, engineering, chemistry, or business, reach out today!

Senior Scientist Materials

Be a key part of our team driving CO2 mineralization for lasting industrial carbon footprint reduction. If you are an expert in material engineering, reach out today!

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Betriebstechniker F&E Anlagen

Be a key part of our team driving CO2 mineralization for lasting industrial carbon footprint reduction. If you are an expert in plant operations, reach out today!

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Senior Process Engineer

Be a key part of our team driving CO2 mineralization for lasting industrial carbon footprint reduction. If you are an expert in plant engineering, reach out today!

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Working student

Be a key part of our team driving CO2 mineralization for lasting industrial carbon footprint reduction. If you are an expert in materials science, engineering, chemistry, or business, reach out today!

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Contact

We look forward to getting to know you