A comprehensive study on the risk of biocorrosion of building materials

Abstract

The fungal genera are known for their high ability to biodeteriorate construction materials. Weight loss and release of calcium are observed when materials, especially concrete, are exposed to fungi. The paper presents the procedures enabling to assess the risk of biocorrosion of buildings at various stages of its development. The presented results lead to selection of effective analytical methodology for this propose. The study was conducted on materials commonly used as construction materials such as granite, ceramic, concrete and plaster. Surfaces of the tested samples were fouled by three selected fungal genera. Changes in properties of the materials due to interaction of fungi have been studied with the use of ergosterol content measurements, microscopic picturing, bioluminescence imaging, measurements of pH and X-ray spectroscopy analysis. Particular attention was paid to propose an appropriate method of estimating the effect of fungi on the surface of building materials using advanced analytical techniques.

Safety of mining in the Kupol deposit based on the analysis and evaluation of geological processes in underground mine (CHAO, Anadyr District)

“…The high content of ion sulfate initiates sulfate corrosion due to formation of calcium hydrosulfoaluminate (3CaO•Al 2 O 3 •3CaSO 4 •3lH 2 O) which promotes an essential increase in the material volume and in the crystallization pressure by more than 10 MPa, which induces disintegration of concrete [8,9]. Intensified weathering of rocks in roof and sidewalls, probability of hazardous gravity-induced processes consequently, some mesophiles, including sulfate-reducing bacteria, are tolerant to low temperatures and can be taken for cryophiles [10][11][12].…”

Assessment of Reasons behind and Level of Destruction of Aquatic Supports in a Hydraulic Ash Removal Bridge

“…bacteria, fungi or algae. The destruction of material caused by these living organisms takes place, among others, under the influence of biogeophysical processes, such as the changes in the porosity of material as a result of the development of a biological membrane on the surface of the concrete (Horbik et al, 2013, Łowińska-Kluge et al, 2016, Mejíaa et al, 2019.…”

Forecasting of mining and geological processes based on the analysis of the underground space of the Kupol deposit as a multicomponent system (Chukotka Autonomous Region, Anadyr district)

“…На фотографиях видны точечные проявления коррозии, вызванные капежом подмерзлотных вод в течение 4 ч. Образование слизистого налета на металле вызывается деятельностью железоокисляющей бактерии Gallionella ferruginea. Помимо коррозии металлического крепления, присутствует также биокоррозия торкрет-бетона [30].…”