Abstract
Biodeterioration can be seen as a process, which decreases value of materials and constructions and has been defined as the deterioration of materials of economic importance by organisms. Since the discovery bacterial genus Acidithiobacillus caused rapid corrosion of concrete especially Acidithiobacillus thiooxidans. This paper presents the results of concrete specimens' biodeterioration study by bacteria Acidithiobacillus thiooxidans and Desulfovibrio genera under model conditions. Biodeterioration was carried out in laboratory reactor, where simultaneous effect of Acidithiobacillus thiooxidans and Desulfovibrio genera happened. The pH values of leachate, mass of concrete specimens change, Ca and Fe content in leachate were evaluated. After experiment the morphology of corroded surface were observed by scanning electron microscopy.
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