Biochar Aggregates: The Key to Carbon-Neutral Construction


  • Biochar aggregates sequester carbon, reducing the carbon footprint of concrete.
  • Lower cement content leads to cost savings and improved environmental performance.
  • Easy to use and integrate into existing construction workflows


At CLS Environmental Technologies, we are dedicated to developing sustainable solutions for construction materials. Our innovative waste conversion techniques have led to the creation of lightweight aggregates made from biomass streams, transforming waste into a valuable resource. In this blog post, we will explore the numerous benefits of using biochar-based aggregates in concrete.

Benefit #1: Carbon Sequestration and Carbon Credits

Our process converts wood waste residues into a versatile biochar material, reducing waste and diverting it from landfills. This not only prevents the release of methane, a potent greenhouse gas, but also creates a stable form of carbon that does not emit CO2 or other greenhouse gases. Additionally, the use of biochar in concrete can generate potential carbon credits, providing financial incentives for sustainable construction practices.

Benefit #2: Lower Carbon Footprint

Lightweight aggregates reduce the density of concrete, requiring less cement. Cement production is an energy-intensive process, responsible for a significant portion of the construction industry’s carbon footprint. By using biochar aggregates, we can reduce the amount of cement needed, resulting in meaningful carbon savings compared to traditional aggregates.

Benefit #3: Cost Savings

The reduced density of biochar-based aggregates allows concrete mixtures to achieve comparable or higher compressive strengths using less cement. This translates to lower material costs for construction projects. Furthermore, biochar derived from organic waste can be sourced locally, minimizing transportation costs and associated environmental impacts.

Benefit #4: Cost and Environmental Benefits of Reduced Cement Content

Using biochar in concrete can lead to reduced cement content, which has associated benefits from both economic and environmental standpoints. Lower cement content reduces the need for energy-intensive cement production, resulting in lower carbon emissions and cost savings. Additionally, it improves the workability and durability of concrete, reducing the need for additional additives or treatments.

Benefit #5: Ease of Use and Streamlined Construction Workflows

Our biochar aggregates are manufactured to perform consistently in concrete, ensuring seamless integration into existing construction workflows without added challenges. Their consistent quality and predictable performance streamline construction processes, saving time and resources.


Biochar-based aggregates offer a sustainable and cost-effective alternative to traditional aggregates in concrete construction. They reduce the carbon footprint, provide cost savings, and enhance the performance of concrete. Their ease of use and seamless integration into existing construction workflows make them a promising option for sustainable and high-performance concrete.