RUSSIAN EXPERIENCE OF RESEARCH IN THE FIELD OF BUILDING MATERIALS WITH THE FUNCTION OF SELF-HEALING

Abstract

The results of the analysis of scientific and technical literature, reflecting the experience of research of Russian scientists in the field of self-healing of building materials are shown. They are presented in publications included in international bibliographic and abstract databases. The tendency of changes in the number of publications over 10 years indicates an exponential growth in the interest of researchers in the ability of self-healing, most of the works (more than 50%) published in the field of materials science. The total number of publications by Russian authors over ten years devoted to self-healing is 206 works, of which 49% are in the field of materials science. An analysis of articles in publications included in international bibliographic and abstract databases published by domestic authors shows that methods of creating a material structure, which contains additional elements in the form of a reserve volume of a structure-forming substance, are proposed to implement the self-healing effect. Such elements are capsules or functional layers with a reducing agent, the destruction of which triggers the recovery (healing) process. Works are presented where the recovery effect is achieved due to the binder's own potential, which is not fully realized at the initial stage of structure formation. The authors have proposed the implementation of the self-healing effect in composites based on a hydraulic mineral binder (cement) and an organic binder (bitumen) or polymer. At the same time, in most cases, there is no mathematical description of self-healing mechanisms.