INCREASING OF BIOLOGICAL RESISTANCE OF SEWER CONCRETE PIPES BY PHYSICO-CHEMICAL MANNER
Based on the analysis of literary sources determinant factors of biochemical destructions of sewer pipes have been found out. The most effective ways to protect the concrete from secondary biochemical corrosion is facing inner surfaces of sewer pipes plastics and ceramics. It has been suggested a comprehensive method of protecting of concrete sewer pipes from waste products thiobacteria, namely as primary protection is expedient to use cement concrete with waterproof W8÷W20, and as a secondary protection fluosilicate treatment of surface of concrete structures. To prove the effectiveness of increasing the biological resistance of sewer concrete pipes physic-chemical method involving electron microscopy, pH-meters and mechanical methods the experimental studies have been carried out. It has been found out that the coefficient of resistance concretes, fluosilicate treatment of concrete under the conditions of operational environment reservoirs and the sulfuric acid is equal to one model (is stable), while the resistance coefficient non-fluosilicate treatment of concrete begins to fall sharply after six months of operation.