The manufacturing of building materials can be energy intensive and produces high greenhouse gas emissions, incentivising the sector to explore new methods for developing low-carbon or even net-zero products to ensure climate goals can be met alongside economic development.

Research has shown that biochar could be an important part of the solution, through its application in Concrete, Asphalt, Cement, and other building materials.

Biochar is carbon negative in its production, with research showing that not only can it replace less sustainable aggregate materials, it can also add valuable properties that deliver desirable properties in the product, as well as helping the environment.

benefits for construction

Cement, concrete, floor screed and asphalt all have been shown to benefit from biochar, delivering improvements such as reduced thermal conductivity, greater strength and durability, and resistance to fractures in aged materials. 

  • Cement 

    Incorporating biochar into cement has the potential to deliver substantial benefits - increased compressive and tensile strength, improved sound absorption, fracture reduction, and a reduced carbon footprint. Research into the applications of biochar in cement is developing at pace, with existing research highlighting the very promising potential benefits for the sector.

    Scientific evidence 

  • Concrete

    The latest research into biochar's applications within concrete is very promising, showing the potential to deliver significant benefits for developers and the environment. Incorporating biochar into concrete may help to improve compressive strength and durability, provide resistance to cracking, provide better insulation, and reduce the carbon footprint of the project where the concrete is used.

    Scientific evidence 

  • Asphalt

    Biochar's application to asphalt has been shown to deliver significant benefits - increased performance of binders in high-temperature climates, improved water resistance, enhanced durability, reduced rutting, and an overall extended service-life. As research in this sector continues, biochar will play an increasingly important role in the development of asphalt products across the UK.

    Scientific evidence 

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