Änderungen der physikalischen Eigenschaften von Marmor durch Pilzbewuchs / Changes of the physical properties of marble as a result of fungal growth

Dornieden, Thomas; Gorbushina, Anna A.; Krumbein, Wolfgang E.

doi:10.1515/rbm-1997-5207

Cited by 21 publications

(5 citation statements)

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“…A further simulation has been performed in order to compare the results to experimental findings published recently by Dornieden et al [1]. A small plate of marble with a square cross section with a length of 10 mm and a height of 3 mm is considered.…”

Section: Plate With One Single Spotmentioning

confidence: 97%

“…This comparison of course cannot be very precise. The physical properties of the marble used in the experiments [1] are unknown. They can be quite different as compared to those chosen for the numerical simulation.…”

Section: Plate With One Single Spotmentioning

confidence: 99%

“…By growing into cracks or pores of a material, they may cause swelling pressure high enough to induce mechanical damage. Recently, Dornieden et al [1] showed that optical properties of a marble surface are changed considerably by fungal growth. Absorption of solar light is increased enourmously by black spots.…”

Section: Introductionmentioning

confidence: 99%

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Numerische Simulation von Temperaturgradienten und thermisch induzierten Eigenspannungen in Natursteinplatten infolge von Sonneneinstrahlung / Simulation of Temperature Gradients and Stresses in Natural Stone Plates under Solar Radiation

Sadouki

Wittmann

1998

Restoration of Buildings and Monuments

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The interaction between micro-organisms and natural stone surfaces has been studied in great detail in the past. The destructive mechanisms of micro-organisms can be roughly subdivided into (a) chemical attack and (b) physical attack. Microorganisms may physically destroy the structure of stones by creating an inter-granular swelling pressure. Recently, it has been shown experimentally that black spots formed by yeast-like fungi lead to a local temperature increase by selective absorption of solar radiation. The maximum temperature observed for clean marble surfaces remained below the maximum temperature observed on inoculated surfaces. As a consequence, thermal dilatation of inoculated marble was shown to be more important. Destruction of the heated stone occurs predominantly if there exists a thermal gradient. In this paper, temperature distribution in clean and stained marble plates have been simulated numerically. Thermal eigenstresses have been determined. It is shown that tensile stresses of up to 5 N/mm2 can be expected. This may cause damage in weak zones of the surface. A sudden driving rain leads to much higher stresses. Cyclic thermal loading may eventually destroy the surface by fatigue.

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Section: Plate With One Single Spotmentioning

confidence: 97%

Section: Plate With One Single Spotmentioning

confidence: 99%

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Numerische Simulation von Temperaturgradienten und thermisch induzierten Eigenspannungen in Natursteinplatten infolge von Sonneneinstrahlung / Simulation of Temperature Gradients and Stresses in Natural Stone Plates under Solar Radiation

Sadouki

Wittmann

1998

Restoration of Buildings and Monuments

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“…Krumbein (1979) believes that through their action biodeteriorating agents can cause different types of changes: biophysical, biochemical, chromatic. Dornieden et al (1997) following investigations of several Greek, Israeli, Austrian and Crimean marble monuments and murals observed complex biopatinas which were later studied under the electron microscope.…”

Section: Introductionmentioning

confidence: 99%

Aspects Regarding the Attack of Some Biodeteriogens on Some Cult Objects From Arges County

Mihăescu¹,

Ponepal²,

Tantu³

et al. 2022

CTNS

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Cultural heritage has a cultural significance, which refers to the aesthetic value of the heritage asset, the historical or social value of monuments for past, present or future generations. In conservation areas where there are open environment conditions, there are ecological producers (autotrophic bacteria, algae, lichens and higher plants). In terms of trophic relationships and the main food chain, the presence in the conservation environment of collections from archives, libraries and museums of excessive food resources for biodeteriogenic pests determines the possibility of the absence of producers, which is why most populations settled in the environment conservation of movable cultural heritage goods are consumers (egs insects) and destroyers (bacteria and fungi). In the present study, various fragments of cultural heritage goods taken from cemeteries, churches, for the purpose of analyzing biological patinas and establishing the etiopathogenic complex were subjected to analysis. Fungi of the genera Alternaria, Penicilium, Aspergillus, etc., various bryophytes, lichens and blue-green algae have been identified.

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“…Nielsen [39] noted 746 such publications in his own reference list. There are only some important articles [7,13,19,20,22,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55]. Recently Adams et al [1] noted 111 species of fungi in damp buildings.…”

Section: Introductionmentioning

confidence: 99%

Electromagnetic Field as Agent Moving Bioactive Cations. A New Antimicrobial System in Architecture Technology

Chlebicki

Spisak²,

Lorenc

et al. 2021

Applied Sciences

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There is a new described antifungal system (GALVI) involving the moving of bioactive ions of Zn, Cu and Bi for the protection of cultural heritage objects such as buildings, sculptures and stretchers. There were two kinds of galvanic cells that were used: the first composed of a two-electrodes system, Zn, Cu, and second one composed of a three-electrodes system, Zn, Bi and Cu. Moreover, two-phase media are proposed with various kinds of rocks used in architectonical objects. Microorganisms inhabit the boundaries of two liquid and solid phases. This enables the investigation of the process of rock colonization. Possible applications of the suggested GALVI system are mentioned.

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Änderungen der physikalischen Eigenschaften von Marmor durch Pilzbewuchs / Changes of the physical properties of marble as a result of fungal growth

Cited by 21 publications

References 0 publications

Numerische Simulation von Temperaturgradienten und thermisch induzierten Eigenspannungen in Natursteinplatten infolge von Sonneneinstrahlung / Simulation of Temperature Gradients and Stresses in Natural Stone Plates under Solar Radiation

Numerische Simulation von Temperaturgradienten und thermisch induzierten Eigenspannungen in Natursteinplatten infolge von Sonneneinstrahlung / Simulation of Temperature Gradients and Stresses in Natural Stone Plates under Solar Radiation

Aspects Regarding the Attack of Some Biodeteriogens on Some Cult Objects From Arges County

Electromagnetic Field as Agent Moving Bioactive Cations. A New Antimicrobial System in Architecture Technology

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