ISSN: 2456-7663
Peer-reviewed Science Magazine

This Magical Self Healing Concrete Repairs It’s Own Cracks

Ghent Univerity
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By blending concrete with limestone-delivering microbes, microbiologist Hendrik Jonker found that any breaks that framed in the solid were fixed over.

It’s been utilized since the Roman circumstances, yet concrete has never been more popular than today. Concrete is a standout amongst the most generally utilized materials on the planet, however eventually, regardless of how it is blended, it will break and disintegrate.

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By blending concrete with limestone-delivering microbes, microbiologist Hendrik Jonker found that any breaks that framed in the solid were fixed over.

The #bacteria, either Bacillus pseudofirmus or Sporosarcina pasteurii, are found naturally in highly alkaline lakes near volcanoes and are able to survive for up to a staggering 200 years without oxygen or food. They are activated when they come into contact with water and then use the calcium lactate as a food source, producing limestone that, as a result, closes up the cracks.

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He calls the material “bio-concrete” that can “self-heal.” In order to keep the bacteria dormant until it is needed, it is placed in small, biodegradable capsules containing the nutrient. When the concrete cracks and water enters the gaps, it comes into contact with the bacteria and the food source, setting the healing process off. The bacteria then feed on the calcium lactate, joining the calcium with carbonate to form limestone, fixing the crack.

The process has been proven to work effectively, and can even be added to a liquid that could then be sprayed onto existing buildings. The problem, however, as always is the price. It is currently twice the cost of traditional #concrete, but Jonker says that this is mainly due to the price of the calcium lactate, and if they can get the bacteria to use a sugar-based nutrient instead, the price would be dramatically reduced.

Source / Journal Ghent Univerity International Research Journal

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