BACTERIA-BASED SELF HEALING CONCRETE
A typical durability- related phenomenon in many concrete constructions is crack formation. While larger crakes hamper structural integrity, also smaller sub-millimeter sized cracks may result in durability problems as particularly connected cracks increase matrix permeability. Ingress water and chemicals can cause premature matrix degradation and corrosion of embedded steel reinforcement. As regular manual maintenance is costly and in some cases not at all possible, the inclusion of an autonomous self-healing repair Mechanism would be highly beneficial as it could both reduce maintenance and increase material durability. Therefore the functionality of various self healing additives is investigated in order to develop a new generation of self-healing concretes.