'Glue' producing bacteria used to fill gaps in cracking concrete

Earlier this year we took a look at the development of self-healing concrete that repairs its own cracks using a built-in healing agent. While this kind of technology holds promise for construction in the future, it’s not so useful for the vast amounts of existing concrete in need of replacement or repair. UK researchers have come up with a solution to this problem that uses bacteria to produce a special "glue" to knit together cracks in existing concrete structures.

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