SciTransfer
ICARUS · Project

Turning Industrial Waste into High-Quality Construction Materials and Raw Resources

constructionTestedTRL 5

Imagine taking things like old diapers, steel mill leftovers, and industrial sludge and turning them into strong bricks or road bases. Instead of burying this trash in the ground, it's cleaned and upgraded to be just as good as brand new stone or sand. It's like giving industrial waste a second life as the foundation of our cities.

By the numbers
40%
Construction industry share of total emissions
12.4%
EU material use rate for circular economy in construction (2021)
50%
Construction sector share of total material extraction
35%
Construction sector share of waste streams in the EU
The business problem

What needed solving

The construction industry relies on a linear 'take-make-dispose' model, leading to 35% of EU waste streams and high carbon emissions. There is a lack of high-quality, standardized secondary raw materials to replace virgin resources.

The solution

What was built

Three upcycling demonstration systems: one for lithium aluminosilicate residue, one for urban cellulose waste using AI, and one for steelmaking slag using carbon capture.

Audience

Who needs this

Cement and concrete manufacturersSteel mill operatorsUrban waste management companiesInfrastructure and road developersCeramic producers
Business applications

Who can put this to work

Construction & Infrastructure
enterprise
Target: Road and building contractors

If you are a contractor dealing with high costs for virgin aggregates — this project developed ways to use lithium aluminosilicate residue (LAR) that creates strong, long-lasting road bases and backfill. This reduces the need for new raw materials while maintaining quality standards.

Waste Management
mid-size
Target: Urban waste processing plants

If you are a waste manager dealing with massive amounts of diapers and wastewater sludge — this project developed an AI-powered process to recover cellulose fibres. These fibres are cleaned and reused in bio-based construction materials, reducing landfill use and emissions.

Steel Manufacturing
enterprise
Target: Steel mills

If you are a steel producer dealing with slag waste — this project developed a method to turn that slag into precipitated calcium carbonate (PCC). This captures carbon dioxide and replaces the need for virgin limestone in ceramics and construction.

Frequently asked

Quick answers

What is the cost or price of these upcycled materials?

Based on available project data, specific pricing or cost-per-ton for the secondary raw materials is not provided.

Can these processes be implemented at an industrial scale?

Yes, the project uses three demonstration case studies across Europe to prove that waste streams from process industries can be transformed into high-quality materials for the construction sector.

How is the intellectual property or licensing handled?

Based on available project data, specific licensing terms are not mentioned, but the project focuses on standardization and business models for market implementation.

How does this affect regulatory compliance for construction?

The project works with standardization actors to ensure that secondary raw materials meet the same quality standards as virgin resources.

When will these technologies be available for commercial use?

The project period runs from 2024-01-01 to 2027-12-31, suggesting commercial readiness targets toward the end of 2027.

Consortium

Who built it

The consortium is heavily industry-driven, with 14 industrial partners (74% of the group) and 4 SMEs. This high ratio of commercial players from 7 different European countries suggests a strong focus on market uptake and practical application rather than purely academic research.

How to reach the team

Contact ACCIONA CONSTRUCCION SA in Spain

Next steps

Talk to the team behind this work.

Contact us to connect with the ICARUS consortium for pilot opportunities.