Creating Bioresistant Technogenic Waste Basted Coatings for Construction Materials

Abstract The biodeterioration process of concrete, having a sol-gel coating, under the impact of a wide range of live microorganisms - green algae, thionic and nitrifying bacteria and filamentous fungi - has been researched. As a biocide additive the biocidal composite material based on modified galvanic sludge in amount of 1-5% of sol mass was used. It was determined that the coating including galvanic sludge demonstrates biocidal activity. Newly formed crystals of quartz, Portlandite, calcite, larnite, ettringite, gismondite, scawtite etc. were found on the surface of samples having no protective coating and exposed to microorganisms. Application of the suggested method of building materials protection is going to increase their durability, make it possible to recycle waste and to improve the environmental condition.