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

Influences of the environment attack marble and ultimately destroy it. Especially the black yeast-like fungi which are often found on marbles especially in Mediterranean monuments strongly attack the marble. Colonization of the surface and interspaces inside the rock on experimental rock slabs lead to additional heat absorption and transfer. This imposes a higher dilatation of the marble causing losses of particles and ultimately the désintégration of the rock structure. For the first time the mechanical destruction of rock material by micro-organism is experimentally shown.