Abstract
The species from the increased biofouling on the paint layers applied to the metallic strength structure of a railway bridge located in a Natura 2000 protected area have been identified by specific biologic and microbiological methods. As a result of the analysis of the biological samples taken on the field, it has been found that relatively large variety of filamentous molds are present (Aspergillus fumigatus, Asprgillus flavus, Aspergillus niger, Paecilomyces variotii, Chaetomium globosum, Trichoderma viride, Stachybotris atra, Trichoderma sp., Alternaria sp and Penicillium sp.). Samples also show, lichens (Xanthoria parietina and Hypogymnia physodes) and lower plants capable of photosynthesis such as algae (Chlorophyta Xanthophyceae, Chrysophyceae) and moss (Lunularia cruciata, Marchantiophyta).
Highlights
The issue of sustainability and safety in exploitation of metallic structures of resistance, especially of bridges, is complex and with practical, economic and ecological implications - which can be decisive for the future of mankind [1]
From the analysis of figure 6 in addition to the expanded colonies of Aspergillus Niger and Chaetomium globossum, it is noted that the micelles are well developed, which can explain the expansion and relative adhesion of the molds on the top coat paint
It is noted that relatively low resistance to filamentous molds action was found in some sorts of polymer used in underground power cables [31, 53] and / or plastic pipelines [54]
Summary
The issue of sustainability and safety in exploitation of metallic structures of resistance, especially of bridges, is complex and with practical, economic and ecological implications - which can be decisive for the future of mankind [1]. The results of field investigations carried out on a railway bridge were presented in [24], which showed that the relatively recent applied paint layers (1983) resulted in massive increases in microbiological species (filamentous molds, moss, lichens and algae), respectively over 10 % of the surface is covered by biofouling.
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