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BBC News - Key test for re-healable concrete

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The concrete contains limestone-producing bacteria, which are activated by corrosive rainwater working its way into the structure.

The new material could potentially increase the service life of the concrete - with considerable cost savings as a result.

I for one look forward to a world of self-healing sidewalks.

If all goes well, Dr Jonkers says they could start the process of commercialising the system in 2-3 years.

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