Abstract
Mineral building materials are porous materials. The volume of pores connected is the active volume of pores or the effective volume. The volume of all pores is the total volume of the pores. The properties of the individual pores are different. Their dimensions and shape can influence the properties of materials. Materials are modified with different admixtures to improve their properties. However, additives or admixtures can cause corrosion. Although building materials do not provide food for microorganisms, they are very often inhabited by them. As a result of their presence and the action of metabolic products, biodeterioration occurs. One of the products of metabolism is water. In this paper we investigated how the modified structure of biodeterioration caused by mould fungi affects the moisture content of cement-polymer mortar with the admixture of polysiloxane latex.
Highlights
Both technical and construction materials have a large number of empty spaces in their internal structure
It is common for pores that are connected to the external surface to be described as open pores
The total volume of pores is the sum of the volume of open and closed pores
Summary
Both technical and construction materials have a large number of empty spaces in their internal structure. Their relative size is small compared to the size of the material itself. The term ’pores’ means the class of voids connected to the outer surface. With their help, liquids penetrate into the material. Voids that do not have this connection are referred to as closed pores. The flow of liquids and gases is only possible in open pores. In such pores, fluid flow may be accompanied by heat transfer, filtration, diffusion, sorption and chemical reactions. The volume of all pores is called the total volume of the pores [1]
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