Microbiological and chemical corrosion of sulfur polymer concretes: Fid-Bau Portal

Microbiological and chemical corrosion of sulfur polymer concretes

Leszczewsky, M. / Orlovsky, Y. / Orlovska, E. / Ciak N. / Erofeew, V.

The paper discusses the reasons for deterioration of building materials containing sulfur. Simultaneous action of biological (thiobacteria) and chemical agents in aggressive media accelerates the process of concrete degradation. A method for evaluating the resistance of sulfur polymer concretes is presented in the paper. The results of tests conducted on structural elements and structures were applied to modeling sulfur polymer concrete degradation under real conditions, as affected by active biological and chemical environments. An analysis of the results shows that the rate of concrete degradation in test specimens depends directly on simultaneous action of the chemical and biological environment. Degradation of the samples exposed in the chemical environment only was less intensive and no cases of sample destruction were recorded over the experimental period (up to 180 days). Proposed non-linear model in figure of power function as well as analytic dependency seem to be only an approximate method of calculation degradation function of bearing abilities for concrete and reinforced concrete constructions. The authors understand the approximation of proposed methods of theoretical opinion for biodegradation and biological durability of sulfur polymer concrete. The change of material properties in time should be considered in the further investigations concerning biological and chemical activity of aggressive environment.