BIO-RESISTANT CEMENT COMPOSITES WITH ACTIVE MINERAL ADDITIVE

Bio-damage is a serious problem affecting all stages of the life cycle of building materials, from the production and storage of raw materials to the transportation and operation of finished products. Bacteria and fungi, being the main agents of biodegradation, can significantly reduce the performance characteristics of materials, which leads to economic losses and a decrease in the quality of building structures. As part of this study, a comprehensive assessment of the biostability of cement composites was carried out. Special attention was paid to the study of the species composition of micromycetes colonizing the surface of composites, as well as the determination of fouling indices. The mechanisms of the effect of microorganisms on the physico-mechanical properties of composites, including their effect on mass content and strength characteristics, were studied in detail. The data obtained are important for the development of new strategies for protecting building materials from biodegradation, which will increase their durability and reliability under operating conditions.