Factors influencing the mechanisms of self-healing of cementing materials. A review

The object of research is the factors influencing the mechanisms of self-healing of binders. Method. The study critically analyzes the factors potentially affecting the self-healing properties of the building material. The influence of the type of bacteria, the level of acid-base balance, temperature, urease activity, the level of calcium, nutrients, methods of applying bacteria, the type of cement and the conditions under which self-healing are carried out and analyzed separately. The influence of factors and their connections with the mechanisms of recovery during autogenic healing and healing with the participation of ureolytic bacteria has been investigated. Results. This review combines various parameters that affect the self-healing mechanisms of cementitious materials, with an emphasis on various ways to stimulate autogenic and bacterial healing mechanisms. Understanding these parameters can contribute to the development of a new generation of self-healing cementitious materials.