This is ‘Bio-concrete’ a new type of concrete containing bacteria set to revolutionize the building industry. To heal cracks in the concrete, the inventor Hendrik Marius Jonkers, chose bacteria (Bacillus pseudofirmus and B. cohnii), that are able to produce limestone on a biological basis. The positive side-effect of this property: the bacteria consume oxygen, which in turn prevents the internal corrosion of reinforced concrete. However, the bacteria do not pose a risk to human health, since they can only survive under the alkaline conditions inside the concrete. Based on these findings, Jonkers and his team of researchers developed three different bacterial concrete mixtures: self-healing concrete, repair mortar, and a liquid repair system. In self-healing concrete, bacterial content is integrated during construction, while the repair mortar and liquid system only come into play when acute damage has occurred on concrete elements.
Self Healing Concrete
Video by EPOfilms