The issue of the building materials biocorrosion has a significant economic dimension because it results in the costly repair. The start and the course of corrosion are conditioned by many factors which undoubtedly in...The issue of the building materials biocorrosion has a significant economic dimension because it results in the costly repair. The start and the course of corrosion are conditioned by many factors which undoubtedly include biological effects like the influence of vegetation and microorganisms causing the so called microbial corrosion. Microorganisms have also a considerable share in the decay and degradation of different building materials. The activity of sulphuratum is the keystone of many processes in nature and in industry. The sulphuric bacteria oxidize hydrogen sulphide produced by sulphate-reducing bacteria into sulphuric acid resulting in the acid or sulphate corrosion of cement stone. The paper is aimed on evaluation of porosity and roughness of concrete samples surface as elementary characteristics of microbial corrosion. After 4 months exposure to the real conditions in sewers deposition the changes were observed by confocal laser microscopy and consequently analyzed and interpreted.展开更多
文摘The issue of the building materials biocorrosion has a significant economic dimension because it results in the costly repair. The start and the course of corrosion are conditioned by many factors which undoubtedly include biological effects like the influence of vegetation and microorganisms causing the so called microbial corrosion. Microorganisms have also a considerable share in the decay and degradation of different building materials. The activity of sulphuratum is the keystone of many processes in nature and in industry. The sulphuric bacteria oxidize hydrogen sulphide produced by sulphate-reducing bacteria into sulphuric acid resulting in the acid or sulphate corrosion of cement stone. The paper is aimed on evaluation of porosity and roughness of concrete samples surface as elementary characteristics of microbial corrosion. After 4 months exposure to the real conditions in sewers deposition the changes were observed by confocal laser microscopy and consequently analyzed and interpreted.
