Bacteria-Powered ‘Self Healing’ Concrete Makes Buildings Like New
The bacteria seals cracks and keeps out water and other damaging substances to prolong the life of the concrete.
Bacteria is being used to develop ‘self-healing’ concrete that would fill cracks in concrete buildings, allowing them to look after themselves. Researchers at Northumbria University led by Dr. Alan Richardson, a Senior Lecturer in Construction in the School of the Built and Natural Environment, are using a ground-borne bacteria called bacilli megaterium. This is grown on a nutrient broth of yeast, minerals and urea to create calcite, a crystalline form of natural calcium carbonate.
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