A New Era for Sustainable Construction
Groundbreaking research by Dr. Mehdi Khanzadeh, an Assistant Professor of Civil and Environmental Engineering at Temple University, will revolutionize the construction industry. He transforms buildings into active carbon dioxide (CO2) sponges. Concrete production, particularly cement, contributes approximately 8% of global CO2 emissions. Dr. Khanzadeh’s work directly addresses this critical environmental challenge; he develops a novel carbonatable concrete that actively absorbs CO2 from the atmosphere.
The Science Behind the Breakthrough
An innovative method, “internal-external CO2 curing,” forms the heart of this innovation, significantly enhancing the material’s ability to sequester CO2. Researchers integrate enzymatic solutions, specifically Carbonic Anhydrase (CA), a pivotal aspect. CA excels at biological CO2 transfer. This enzyme accelerates the carbonation reaction, allowing CO2 to penetrate more deeply and uniformly into the concrete. This process improves its strength and durability. Initial tests demonstrate remarkable results, increasing mechanical performance and durability by 80-100% over existing carbonatable concrete.
Expanding Applications and Future Impact
This substantial improvement allows Dr. Khanzadeh’s enzyme-infused concrete to expand beyond non-load-bearing applications like cinder blocks, enabling its use in major structural components such as beams and columns. This shift will enable widespread decarbonization within the construction sector, making infrastructure an active participant in climate change mitigation. The research, currently in its proof-of-concept stage, attracted significant support, including a prestigious NSF CAREER Award in 2024. This highlights its potential for future scalability and broad accessibility
