Metabolic Activity of Micromycetes Affecting Urban Concrete Constructions

Figure 3

Visualization of M 600 concrete samples surface infected by P. brevicompactum P4 spores after 28 days of treatment. (a, d) Control samples without treatment; (b, e) fungal growth on the concrete surface which was completely immersed in the culture medium; (c, f) superficial growth on the concrete surface which was contacted with air in container. (a-c) Samples used for element composition testing, points show areas for analysis (Merlin scanning microscope, Carl Zeiss, Germany). (a) Illustration of chemical formation of calcite around the microcrack.

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