Changes of Porosity and Roughness of Concrete Surfaces Due to Microbial Corrosion
Changes of Porosity and Roughness of Concrete Surfaces Due to Microbial Corrosion作者机构：Institute of Building and Environmental Engineering Technical University of Kosice Civil Engineering Faculty Vysokoskolska 404200 Kosice Slovakia Institute of Geotechnics Slovak Academy of Science Watsonova 45 043 53 Kosice Slovakia
出 版 物：《Journal of Chemistry and Chemical Engineering》 (化学与化工（英文版）)
年 卷 期：2011年第5卷第3期
页 面：241-245页
学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
主 题：Porosity roughness concrete microbial corrosion.
摘 要：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.
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