The position paper “Biochar in Concrete: A Circular, Climate-Effective Path for Europe’s Construction Sector” examines how biochar-based technical carbon can be integrated into concrete to enable durable carbon storage while contributing to material performance.
It unpacks the scientific and material properties behind biochar in cementitious systems, including its role in hydration processes, durability, and structural behaviour, alongside its function as a long-term carbon storage medium.
Readers will find a detailed breakdown of how existing European frameworks, such as the EU Carbon Removal Certification Framework, EN 12878, and EN 15804, are already providing entry points for biochar in construction.
The paper also presents a practical case study from Austria, demonstrating how biochar-based additives are being implemented at scale, with measurable carbon storage outcomes in concrete structures.
Beyond technical insights, the paper highlights what is needed for scale: supply chains, quality assurance, and procurement models that recognise carbon performance. It positions biochar in concrete within a broader shift, from pilot applications to integration within mainstream construction markets.
As explored throughout the paper, biochar-based carbon in concrete is no longer confined to isolated applications, it is increasingly being positioned within existing standards, measurable carbon accounting, and real construction workflows.
The position paper takes a closer look at how biochar-based technical carbon functions within concrete, how it is treated under current European standards, and how carbon storage can be accounted for in lifecycle assessments. Developed by Axel Preuß (CarStorCon®) in cooperation with Biochar Europe (BCE) and the BCE Materials Working Group.
Download the full position paperThe position paper takes a closer look at how biochar-based technical carbon functions within concrete, how it is treated under current European standards, and how carbon storage can be accounted for in lifecycle assessments. Developed by Axel Preuß (CarStorCon®) in cooperation with Biochar Europe (BCE) and the BCE Materials Working Group.
Download the full position paper
About
Axel Preuß is the founder of CarStorCon® Technologies and an engineering consultant specialising in industrial decarbonisation solutions for the construction sector, with a focus on CO₂-reduced concrete and asphalt applications.
LinkedinCarStorCon® Technologies develops solutions for the construction sector focused on reducing and storing CO₂ in concrete and asphalt applications. The company’s approach centres on Clim@Add®, a carbon-based additive designed to partially substitute conventional materials in construction products while maintaining or improving technical performance. CarStorCon® works on the development and implementation of climate-oriented construction solutions for infrastructure and building applications across Europe.
CarStorCon® Technologies