ABSTRACT
The trend of concrete deterioration caused by chemical or biological effects is dependent on a type of aggressive environments. Bacteria responsible for acidic corrosion of sewer systems are amply represented in waste waters. The paper brings current results of an investigation of relation between pH values and leached-out concentrations of calcium and sulfur concentrations in medium. For laboratory testing, there were preferentially selected aggressive environments with bacteria responsible for biological corrosion and pure cultivation medium without bacteria stands for the control sample. The correlation analysis confirmed that the higher was the sulfur concentration in liquid, the more massive was leaching of calcium.
