Algae-Based Masonry Blocks: The Future Of Green Construction?


Masonry Blocks made of Algae-based Cement
Masonry Blocks made of Algae-based Cement

Colorado-based Prometheus Materials has developed masonry blocks from a low-carbon cement-like material grown from micro-algae. The blocks, which meet the American Society for Testing and Materials (ASTM) standards, were made using an organic cement-like material grown in bioreactors.

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This material reproduces itself in ways similar to coral. "Coral reefs, shells, and even the limestone we use to produce cement today show us that nature has already figured out how to bind minerals together in a strong, clever, and efficient way," said Prometheus Materials co-founder Wil V Srubar III. This bio-cement is made from biomineralizing cyanobacteria that are grown using sunlight, seawater, and CO2.

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The blocks were created by mixing this bio-cement with aggregate to create a low-carbon building material with mechanical, physical and thermal properties comparable to portland cement-based concrete. The bio-cement could be mass-produced as an alternative to portland cement, which is a huge source of carbon emissions as it relies on clinker made from crushed and burned limestone.

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Image Credit: Dezeen

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