The operation of concrete drainage pipelines without anticorrosive protection for even a short service life leads to a significant destruction of their internal surface, which necessitates their repair or relocation. Specification of corrosion processes in sewerage networks, the predominant role of microbiological processes in them requires the protection of concrete with materials resistant to specific biogenic sulfuric acid aggression. The effective protective materials, in this case, are those that, in addition to acid-proofing materials, have bactericidal properties. Polymer composite materials (PCM) of cold curing based on modified epoxy-resin, resins with dispersed oxides as fillers are widely used in construction. Unique properties and simple technologies make it possible to use them as injection formulations for repair, restoration and restoration of building structures and structures, waterproofing and facing materials, for impregnating, gluing and coating metal, wooden, brick and concrete building structures and parts. Due to the combination of high strength characteristics, adhesion to various surfaces, and also resistance to most aggressive media, these materials are practically indispensable for solving any technological problems. However, there are factors that limit their use in the construction industry due to an inadequate stability of properties under severe operating conditions. Regulation of the performance characteristics of PCM is carried out by chemical and physical modification of the compositions taking into account the specific operating conditions of the material. In the reconstruction and restoration of sewerage collectors operating under conditions of exposure to liquid biochemically aggressive media with mineral acids and organic substances, particular attention is paid to the permeability of repair materials. To assess the permeability of PCM, the method of thermoporometry on the basis of differential scanning calorimetry was used. The characteristics of the PKM pore structure in the range 2 ... 100 nm were determined: the size, volume and pore size distribution, and the degree of exposure of aggressive media to their change. Based on the results of the study, PKM compositions were chosen whose estimated lifetime is about 20 years, ensuring reliable protection of the sewage collectors from corrosion.