Engineers at Worcester Polytechnic Institute have developed a novel building material that sequesters carbon dioxide rather than emitting it. The enzymatic structural material, or ESM, cures quickly and offers a sustainable alternative to traditional concrete. This innovation could significantly reduce the construction industry's environmental impact.
Researchers at Worcester Polytechnic Institute (WPI) have introduced enzymatic structural material (ESM), a breakthrough in sustainable construction. Led by Nima Rahbar, the Ralph H. White Family Distinguished Professor and head of the Department of Civil, Environmental, and Architectural Engineering, the team harnessed an enzyme to convert carbon dioxide into solid mineral particles. These particles bond and cure under mild conditions, forming structural components in just hours.
Traditional concrete, the world's most common building material, relies on high-temperature production and can take weeks to set. Its manufacturing contributes nearly 8% of global CO2 emissions. In stark contrast, ESM production sequesters more than 6 kilograms of CO2 per cubic meter, while conventional concrete releases 330 kilograms. "Concrete is the most widely used construction material on the planet, and its production accounts for nearly 8% of global CO2 emissions," Rahbar explained. "What our team has developed is a practical, scalable alternative that doesn't just reduce emissions—it actually captures carbon."
ESM stands out for its strength, repairability, and full recyclability, making it ideal for applications like roof decks, wall panels, and modular systems. It also minimizes waste by allowing repairs, potentially cutting long-term costs and landfill contributions. Beyond basic construction, the material supports affordable housing, climate-resilient infrastructure, and rapid rebuilding after disasters, thanks to its lightweight and quick-production properties.
The findings appear in the journal Matter, highlighting ESM's potential in low-energy, biologically derived manufacturing. Rahbar emphasized the broader implications: "If even a fraction of global construction shifts toward carbon-negative materials like ESM, the impact could be enormous." This development aligns with goals for carbon-neutral building practices and circular economies, offering a cleaner path forward for an industry responsible for substantial emissions.
