The "Living Concrete" That Can Heal Itself / by sarkis arakelyan

Professor Henk Jonkers at Delft University of Technology has developed a concrete mixture that is capable of repairing cracks when exposed to water. The mixture is similar to regular concrete except for the addition of the “healing agent” which are small plastic capsules containing a type of bacteria that will remain dormant until exposed to water that creeps in from a crack. When activated the bacteria feeds on calcium lactate which allows them to generate limestone to seal the crack with.