SciTransfer
CARBCOMN · Project

Carbon-Negative 3D Printed Concrete Blocks for Sustainable and Deconstructable Buildings

constructionPrototypeTRL 3

Imagine building a house with Lego blocks made from captured air pollution and industrial waste. Instead of using steel bars that rust over time, these blocks are shaped to support weight naturally and can be taken apart and reused later. It turns buildings into giant sponges that soak up CO2 instead of releasing it.

By the numbers
21 MPa
compressive strength of developed concrete
6 MPa
flexural strength of developed concrete
0.7 m
maximum buildable height for block geometry
100%
secondary binder and aggregates used in concrete
The business problem

What needed solving

Traditional concrete production is a major CO2 emitter and relies on steel reinforcement that corrodes, shortening building lifespans. There is a lack of structural materials that are both carbon-negative and easy to disassemble for reuse.

The solution

What was built

A 3D-printable carbon-negative concrete and a digital design pipeline for creating compression-dominant, demountable structural blocks.

Audience

Who needs this

Green construction companies3D concrete printing manufacturersSustainable urban developersIndustrial waste management firms
Business applications

Who can put this to work

Sustainable Architecture
SME
Target: Green building design firms

If you are a design firm dealing with strict carbon neutrality mandates — this project developed a digital design pipeline and carbon-negative concrete that allows for the creation of load-bearing walls and columns that sequester CO2.

Additive Manufacturing
mid-size
Target: 3D concrete printing service providers

If you are a printing company dealing with material waste and low strength — this project developed a 100% secondary binder concrete that reaches a compressive strength of 21 MPa and can be printed in blocks up to 0.7 m high.

Waste Management
enterprise
Target: Industrial byproduct processors

If you are a processor dealing with excess slags and ashes — this project developed a method to incorporate these by-products into carbon-negative concrete, turning waste into high-value structural blocks.

Frequently asked

Quick answers

What is the cost or price of this system compared to traditional concrete?

Based on available project data, specific pricing or cost-reduction figures are not provided; however, the system reduces costs associated with raw material usage by using industrial by-products.

Can this be produced at an industrial scale?

The project has successfully performed 3D printing of blocks with a buildable height of around 0.7 m, indicating a move toward scalable component production.

Who owns the IP and how is licensing handled?

Based on available project data, the IP and licensing terms are not specified, but the project is coordinated by Universiteit Gent with a consortium of 11 partners.

Does this meet current building regulations?

The project aims to establish compliance with relevant standards of building operational performance to enable architects and engineers to use the system.

What is the timeline for market availability?

The project period runs from 2024-10-01 to 2028-09-30, suggesting that full validation will be completed by late 2028.

Consortium

Who built it

The project features a strong industrial lean with 6 industrial partners (55% ratio), including 5 SMEs, which suggests a high focus on commercial viability. The collaboration spans 7 countries (AT, BE, CH, DE, EL, IT, UK), combining academic research from 5 universities with practical manufacturing expertise.

How to reach the team

Contact Universiteit Gent regarding the CARBCOMN project

Next steps

Talk to the team behind this work.

Contact us to connect with the CARBCOMN consortium for early adoption of carbon-negative 3D printing.