BBC News - Key test for re-healable concrete
Jared Sperli stashed this in science
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.