Growing Cement Bricks With Bacteria

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Artikel TFD, MESTECC 

The Inspiration

While working for an architectural firm in 2005, Ginger Krieg Dosier (CEO BioMason) was tasked with looking into green alternatives for building materials. When it came to brick and masonry, her searches came up empty (on average, fabrication of bricks emit over 800 million tonnes of carbon-dioxide annually). She then compared the fabrication of bricks to how the sea shell and coral grow underwater that could withstand water and erosion. This comparison blossomed into a way to grow cement and concrete bricks without emitting carbon dioxide.

How It Works

Every bricks starts with sand packed into rectangular molds. The molds are then inoculated with bacteria, which wrap themselves around the grains of sand. With each bacteria covered grain of sand acting as a nucleus, calcium carbonate crystals begin to form around it. An irrigation system feeds the bricks nutrient rich water over the course of several days to facilitate the process. The crystals grow larger and larger, filling in the gaps between the grains of sand. After three to five days, the bricks are ready for use.

Advantages of using bio-bricks includes:

• Made in ambient temperatures, no CO2 emissions, minimal dependancy on natural fossil fuels, and can be made on site.
• No waste in manufacturing.
• Environmetal points.
• Product customization.
• Additive material performance such as increased insulation.
• Nutrients and minerals required in the process are obtained from natural resources, but may also be extracted from industrial waste streams.

Sumber:

http://www.pbs.org/newshour/updates/carbon-emissions-growing-cement-bricks-bacteria-biomason/

https://www.inc.com/kevin-j-ryan/best-industries-2016-sustainable-building-materials.html

http://www.architectureanddesign.com.au/features/comment/bio-bricks-could-reset-the-building-industry

https://ww2.kqed.org/science/2017/03/17/want-to-cut-carbon-emissions-try-growing-cement-bricks-with-bacteria/

http://biomason.com/about-us/

http://inhabitat.com/biomasons-bricks-grown-with-sand-and-bacteria-to-hit-the-market-next-year/

https://cleantechnica.com/2016/02/29/huge-cuts-in-brick-co2-emissions-coming-from-startup-biomason/

http://catalystreview.net/bio-manufactured-brick-metropolis-2010-next-generation-winner/

https://www.treehugger.com/green-architecture/architect-grows-brick-from-bacteria-sand-urine.html

Thank you.

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